3001

Operator’s Manual
3001 Operator’s Manual
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
1.1 Customer Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
1.2 Standard Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
1.3 Options and Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
1.4 Unpacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
1.5 Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
2. Calibrator Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
2.1 Front Panel Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
2.2 Primary Input/Output Terminals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
2.3 Primary Input/Output Display and Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
2.4 Isolated Input Display, Controls, and Terminals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
2.5 Rear Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
2.6 Display Layouts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
2.7 Error Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
3. Getting Started . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
4. Primary Inputs and Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
4.1 DC Voltage Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
4.2 DC Current Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
4.3 Resistance Temperature Detector (RTD) and Ohms Measure . . . . . . . . . . . . . . . . . . . . .16
4.4 Resistance Temperature Detector (RTD) and Ohms Source . . . . . . . . . . . . . . . . . . . . . . .18
4.5 Resistance Temperature Detector (RTD) with Custom Coefficients . . . . . . . . . . . . . . . . .19
4.6 Standard Platinum Resistance Thermometer (SPRT) Coefficients . . . . . . . . . . . . . . . . . . .20
4.7 Thermocouple (T/C) Measure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
4.8 Thermocouple (TC) Source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
4.9 Pressure Measure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
5. Isolated Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
5.1 Voltage Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
5.2 Current Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
5.3 Pressure Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
6. Output Setpoints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
7. Application Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
7.1 P/I Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
7.2 I/P Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
7.3 V/I Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30
7.4 RTD Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30
7.5 RTD Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
7.6 Thermocouple Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
7.7 Thermocouple Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
7.8 RTD Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
7.9 Precision Current Trip . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34
7.10 I/I Isolator/Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35
7.12 Precision Temperature Measurement with IBP-2 Probe . . . . . . . . . . . . . . . . . . . . . . . . .36
8. LCD and Remote Interface Setup Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37
9. Remote Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37
9.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37
9.2 Setting up the RS-232 Port for Remote Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38
9.3 Setting up the IEEE-488 Port for Remote Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38
9.4 Changing Between Local and Remote Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39
9.5 IEEE-488 Interface Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40
9.6 Using Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41
9.7 Checking 3001 Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45
10. Remote Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50
10.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50
10.2 Command Summary by Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50
10.3 Error Code Listing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52
10.4 Remote Command Listing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54
11. Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .77
11.1 Cleaning the Calibrator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .77
11.2 Replacing a Line Fuse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .77
11.3 Changing the Line Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .78
12. Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .79
12.1 General Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .79
12.2 DC Voltage Specifications, Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .80
12.3 DC Voltage Specifications, Isolated Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .80
12.4 DC Current Specifications, Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .80
12.5 DC Current Specifications, Isolated Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .81
12.6 Resistance Specifications, Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .81
12.7 Resistance Specifications, Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .81
12.8 Thermocouple Specification, Output and Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .82
12.9 RTD and Thermistor Specification, Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .84
12.10 RTD and Thermistor Specification, Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .86
12.11 Pressure Measurement Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .87
13. Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .88
1. Introduction
The Martel series 3001 calibrator is an accurate full-featured temperature, pressure and
DC calibrator intended for R & D, manufacturing and calibration lab applications. The
unit's simple design and ease of operation allow users to quickly familiarize themselves
with its operations and features. Time saving functions like the ability to save, recall and
automatically cycle through setpoints for each output range, the ability to enter user
definable RTD curves, and a complete remote interface are several key features offered
by the 3001.

1.1 Customer Service

Corporate Office:
www.martelcorp.com
e-mail: sales@martelcorp.com
Tel: (603) 434-8179 800-821-0023 Fax: (603) 434-1653
Martel Electronics
PO Box 770
1F Commons Drive
Londonderry, NH 03053

1.2 Standard Equipment

• Power cord
• Thermocouple shorting jumper

1.3 Options and Accessories

• IBP-2 PT100 High Accuracy Probe
• 80029 JKTE Thermocouple Kit
• 80036 RSNB Thermocouple Kit
• PTL-1 Low EMF Beryllium Copper Test Leads
The 3001 and above options are available in a complete kit form.

1.4 Unpacking
Upon receipt of the shipment, inspect the container and equipment for any signs of
damage. Take particular note of any evidence of rough handling in transit. Immediately
report any damage to the shipping agent.
NOTE: The carrier will not honor any claims unless all shipping material is saved for their
examination.
After examining and removing the contents, save the packing material and carton in the
event that re-shipment is necessary.
Remove the Packing List and verify that all of the listed equipment has been received. If
there are any questions about the shipment, please call Martel Electronics at 1-800-821-
0023.
Check to see if your basic calibrator package is complete. It should include:
• 3001 Calibrator
• Instruction Manual

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 • AC Line Cord
• Thermocouple Shorting Jumper
• NIST Certificate

1.5 Safety Information

Symbols Used
The following table lists the International Electrical Symbols. Some or all of these symbols
may be used on the instrument or in this manual.

Symbol Description

AC (Alternating Current)

AC-DC

Battery

CE Complies with European Union Directives

DC

Double Insulated

Electric Shock

Fuse

PE Ground

Hot Surface (Burn Hazard)

Read the User’s Manual (Important Information)

Off

On

Canadian Standards Association

2
The following definitions apply to the terms "Warning" and "Caution".
• " Warning" identifies conditions and actions that may pose hazards to the user.
• " Caution" identifies conditions and actions that may damage the instrument being
used.
Use the calibrator only as specified in this manual, otherwise personal injury and/or
damage to the calibrator may occur.

Warning
To avoid possible electric shock or personal injury:
• Do not apply more than the rated voltage between the terminals, or between any
terminal and chassis ground. See specifications for supported ranges.
• Follow all equipment safety procedures.
• Always use the power cord and connector suitable for the voltage and outlet of the
location in which you are working.
• Do not use the calibrator if it is damaged. Before you use the calibrator, inspect the
case. Look for cracks or missing plastic. Pay particular attention to the insulation
surrounding the connectors.
• Inspect the test leads for damaged insulation or exposed metal. Check test lead
continuity. Replace damaged test leads before you use the calibrator.
• Never operate the calibrator with the cover removed or the case open, and never
remove the cover or open the case without first disconnecting the power source and all
test leads.
• Select the proper function and range for your measurement.
• Never touch the probe to a voltage source when the test leads are plugged into the
current terminals.
• When using the probes, keep your fingers away from the probe contacts. Keep your
fingers behind the finger guards on the probes.
• Connect the common test lead before you connect the live test lead. When you
disconnect test leads, disconnect the live test lead first.
• Do not use the calibrator if it operates abnormally. Protection may be impaired. When
in doubt, have the calibrator serviced.
• Do not operate the calibrator around explosive gas, vapor, or dust.
• When using a pressure module, make sure the process pressure line is shut off and
depressurized before you connect it, or disconnect, it from the pressure module.
• Disconnect test leads before changing to another measure or source function.
• Have the calibrator serviced only by qualified personnel, and use only specified
replacement parts.
• Use only the replacement fuse(s) specified in this manual.
• To avoid a violent release of pressure in a pressurized system, shut off the valve and
slowly bleed off the pressure before you attach the pressure module to the pressure
line.

3
 Caution
To avoid possible damage to the calibrator or to the equipment under test:
• Use the proper terminals, function, and range for your measurement or sourcing
application.
• To avoid mechanically damaging the pressure module, never apply more than 10 ft-lb
of torque between the pressure module fittings, or between the fittings and the body of
the module.
• To avoid damaging the pressure module from overpressure, never apply pressure
above the rated maximum printed on the module.
• To avoid damaging the pressure module from corrosion, use it only with specified
materials. Refer to the pressure module documentation for material compatibility.

2. Calibrator Description

2.1 Front Panel Overview

Figure 1 shows the overall layout of the front panel. Each of the three major divisions is
described in detail in the following sections.

Figure 1 - Front Panel

Item Name Description

1 Primary input/output terminals See section 2.2 for details
2 Primary input/output display and controls See section 2.3 for details
3 Isolated input display, controls, and terminals See section 2.4 for details

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2.2 Primary Input/Output Terminals
Figure 2 describes the primary input/output terminals in detail. The display and controls
for these terminals are described in the next section.

Figure 2 - Primary Input/Output Terminals

Item Name Description
1 VOLTS DC voltage output terminals. See notes 1 and 2 below.
2 mA DC current output terminals. See notes 1 and 2 below.
3 RTD/O OUTPUT Two wire RTD and Ohms output terminals. See notes 1
and 2 below.
4 TC INPUT/OUTPUT Thermocouple input and output terminals. These termi-
nals accept a miniature polarized thermocouple plug with
flat in-line blades spaced 7.9 mm (0.312 in.) center to cen-
ter.
5 4W RTD/O INPUT Four wire RTD and Ohms input terminals. See notes 1
and 3 below.

6 Pressure module input connector.

Note 1: These terminal binding posts are made of a special copper alloy to reduce thermal
EMF's. They support the use of either discreet wires or standard banana plugs, and the
HI/LO pairs are spaced for standard dual banana plugs.
Note 2: Caution. Do not exceed a maximum of 100 volts to chassis ground.
Note 3: Caution. Do not exceed a maximum of 20 volts to chassis ground.

5
 2.3 Primary Input/Output Display and Controls
Figure 3 describes the primary input/output display and controls in detail.

Figure 3 - Primary Input/Output Display and Controls

Item Name Description

1 Display A 2 line, 16 character, display providing all visual user
feedback for the primary output and input operations.See
section 2.6 for layout details, and section 2.7 for possible
error messages.
2 Numeric and secondary Output value data entry keys.Secondary function selection
function keys per the text printed above the numeric key. Press the

key followed by the numeric key to select the func-

tion.

OUTPUT Change RTD/Ohms or Thermocouple to output mode.

INPUT Change RTD/Ohms or Thermocouple to input mode.

ZERO Zero the input for Pressure, Thermocouple millivolts, or

RTD ohms

SETUP Adjust the LCD Contrast, LCD Backlight, and Remote

Interface Configuration as described in section 8.

CJC Select internal or external cold junction compensation for

Thermocouple temperature measurements. When external
compensation is selected, XCJC is displayed at the start of
the second line.

°C/°F Select Centigrade or Fahrenheit units for RTD and

Thermocouple temperature measurements.
6
 SET Set a new value for a preset output setpoint as described
in section 6.

RECALL Recall a preset output setpoint as described in section 6.

AUTOSET Initiate automatic stepping of preset output setpoints as

described in section 6.

RNG LOCK Select Auto-range or Range Lock for voltage output.

LOCAL Press to regain local control of the 3001 after the remote
command REMOTE has been received; in this case all
keys except this one are ignored. When the remote com-
mand LOCKOUT has been received, all keys are ignored
including this one and the remote command LOCAL must
be received to regain local control.

EXP Press during entry of a RTD custom curve coefficient to

begin entering the exponent.
3 Function keys

Select DC voltage or current output mode, and toggle

between them.

Select Thermocouple or RTD/Ohms input/output mode,

and toggle between them.

Select Pressure input mode.

In Thermocouple mode, cycle through the thermocouple

types, including millivolts.In RTD/Ohms mode, cycle
through the RTD types, including ohmsIn Pressure mode,
cycle through the pressure units.

For all output modes, except Thermocouple, toggle

between Standby and Operate modes.In Standby mode,
any change to the output value in the display is not driven
to the terminals until the Operate mode is selected.In
Operate mode, each change to the output value in the dis-
play is driven to the terminals immediately, except for DC
voltages greater then 30V when the mode reverts to
Standby automatically for safety reasons.

Changes the calibrator output or parameter to the numeric

value typed into the keypad.

7
 Clears a partial keypad entry and reverts the calibrator out-
put or parameter to its last known value.

Prepares for selection of a secondary function via the

numeric keypad according to the text above each key.
The display changes to SHIFT ENABLED until a numeric

key is pressed. To cancel the selection press

again.

4 Cursor controls Press or to position the cursor under the digit in

an output value that is to be incremented or decrement-
ed.Press to increment the digit in the output value
where the cursor is positioned.

Press to decrement the digit in the output value

where the cursor is positioned.

The and keys are also used to adjust LCD

Contrast level, LCD Backlight level, and Remote Interface
Configuration selections as described in section 8.

2.4 Isolated Input Display, Controls, and Terminals

Figure 4 describes the isolated input display, controls, and terminals in detail.

Figure 4 - Isolated Input Display, Controls, and Terminals

8
Item Name Description
1 Display A 2 line, 16 character, display providing all visual user
feedback for the isolated input operations. See section 2.6
for layout details, and section 2.7 for possible error mes-
sages.
2 Function keys

Select DC voltage and current input mode. Subsequent

presses of this key cycle through the ranges: 10V, 100V,
and 50mA.

When using 50mA mode to test a 2 wire loop powered

transmitter that is disconnected from its wiring, press this
key to activate an internal 24V power supply in series with
the current measuring circuit. Press the key again to
deactivate the 24V supply.

When using 50mA mode to test a HART configuration

device, press this key to activate an internal 250 ohm resis-
tor in series. Press the key again to deactivate the resis-
tor.Note that activating this resistor drops the maximum
load driving capability from 1000 ohms at 20mA to 750
ohms at 20mA.

Select Pressure input mode. Subsequent presses of this

key cycle through the pressure units.Pressure input mode
uses the pressure module connector on the primary
input/output side. Both sides may be selected to pressure
mode simultaneously and can be set to display the same
pressure measurement in different units if desired.
3 Input Terminals Common input terminals for DC voltage and current. See
notes 1 and 2 below.

Note 1: These terminal binding posts are made of a special copper alloy to reduce thermal
EMF's. They support the use of either discreet wires or standard banana plugs, and the
HI/LO pairs are spaced for standard dual banana plugs.
Note 2: Caution. Do not exceed a maximum of 100 volts to chassis ground.

9
 2.5 Rear Panel
Figure 5 describes the rear panel layout.

Figure 5 - Rear Panel

Item Description
1 RS-232 9 pin connector for remote control of the 3001 via any computer's serial interface.
2 GPIB IEEE 488.2 connector for remote control of the 3001 via a GPIB bus.
3 Service port for updating the 3001 firmware.
4 Chassis ground terminal internally connected to the ground prong of the AC power inlet.

Warning To avoid shock hazard, connect the factory supplied 3 conductor power
cord to a properly grounded power outlet. Do not use a 2 conductor adapter or extension
cord as this will break the protective ground.
Use the chassis ground terminal for a protective ground wire if there is any question about
the grounding through the 3 conductor power cord.
5 Standard IEC AC power inlet for 120/240 VAC.
6 Main power on/off switch.
7 Power line voltage selector and fuse compartment. See section 11 for instructions on
changing the line voltage selector and changing fuses.

Warning To prevent electrical shock, only remove the line voltage selector and
fuse holder when the power cord is removed.

10
2.6 Display Layouts

a) Primary Voltage and Current Display

Figure 6 - Primary Voltage and Current Display Layout

Item Description
1 Operating mode:
AUTO: Auto-range
LOCK: Range lock
rem remote operation
SP# Automatic stepping of preset setpoints
2 Present range and output mode
3 Output state:
Stby Standby, terminals inactive
Opr Operating, terminals are active with output per the displayed value
4 Output value
5 Units

b) Primary Thermocouple and RTD Display

Figure 7 - Primary Thermocouple and RTD Display Layout

Item Description
1 Output mode selection: RTD, TC, or rem for remote operation
2 Input or output selection
3 RTD or thermocouple type selection

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 4 Output state for RTD outputs:
Stby Standby, terminals inactive
Opr Operating, terminals are active with output per the displayed value
Blank for RTD inputs
Cold junction selection for thermocouple inputs and outputs:
XCJC External cold junction compensation; the 3001 automatic cold junction
compensation is turned off, i.e. 0 mV is always 0°C
Blank Internal cold junction compensation; the 3001 automatically measures
the ambient temperature at the thermocouple terminals and compen-
sates the measurement, i.e. 0 mV is ambient temperature
5 Input or output value
6 Units

c) Primary and Isolated Pressure Display

Figure 8 - Primary and Isolated Pressure Display Layout

Item Description
1 UnitsOn the primary display, rem appears to the left during remote operation
2 Input value

d) Isolated Voltage and Current Display

Figure 9 - Isolated Voltage and Current Display Layout

12
Item Description
1 Selected range and input mode:·
• 10V RANGE or 100V RANGE for DC voltage·
• 50mA RANGE for basic DC current·
• 24mA LPWR for loop powered 2 wire transmitter·
• 24mA LPWR HART for loop powered 2 wire transmitter with 250 ohm resistor in circuit
2 Input value
3 Units

2.7 Error Messages

The following error messages may appear on either display.
Table 1 - Error Messages
Message Description
OVER RANGE The value entered on the numeric keypad exceeds the range of the output
mode selected.
OVER LOAD For DC voltage output mode, the current required to generate the output
exceeds the 3001 specifications.For DC current mode, the resistance of the
circuit exceeds the 3001 specifications.
OL For input modes, the measured value exceeds the upper limit of the selected
input mode range.For output modes, when the range is locked, the present
automatically recalled preset setpoint exceeds the upper limit of the locked
range. The output is set to zero for the duration of this setpoint.
-OL For input modes, the measured value exceeds the lower limit of the selected
input mode range.

13
3. Getting Started
After unpacking the 3001 and becoming familiar with the layout and general operation of
the unit as described in the previous section, it is ready to set up for operation.
The following steps should be followed to set up the 3001 for operation:
a) Before attaching the power cord to the rear connector, check that the line voltage
selector is set appropriately for your location. The 3001 is shipped from the factory
with the line voltage set for the country of purchase. To verify the line voltage setting,
check the indicator on the power line voltage selector and fuse compartment cover;
see figure 5 in section 2.5 for the location.
Confirm that the setting is correct according to the following guidelines:
Line Voltage (50/60Hz) Selector Position
90 to 135 VAC 120 VAC position
220 to 250 VAC 240 VAC position
If the setting is not correct, follow the instructions in section 11.3 to change it.
b) Once the voltage selection has been made, making sure that the power switch is off,
connect the AC power cord to the 3001; see figure 5 in section 2.5 for the location.
c) Turn on the 3001 using the rear panel mounted rocker switch. The 3001 should
power up within a few seconds, briefly displaying the model number and firmware
version in the primary display before reverting to the normal input/output display.
NOTE: If a proper power up display does not occur within 30 seconds, turn the power
off, wait a few seconds, and repower the unit. If the problem persists, report the problem
to Martel immediately.
Warm up time is twice the time since last warmed up, to a maximum of 30 minutes. For
good stability it is best to leave the 3001 on all the time.

4. Primary Inputs and Outputs

4.1 DC Voltage Output

The 3001 can source DC voltages from 0 V to 100 V, using the following four ranges for
maximum accuracy: .1 V, 1 V, 10 V, and 100 V.
a) Disconnect any test leads from external devices.

b) Press the key to select DC voltage and current mode, if not already selected.
If DC current mode is displayed, press the key again to cycle to DC voltage mode.
c) Connect the unit under test to the voltage output terminals of the 3001 as shown in
figure 10.

14
 Figure 10 - DC Voltage Output Connection

d) Use the numeric keypad to enter the desired output value and press the key.

Alternatively, use the or cursor key to select a digit to modify, followed by the
or cursor key to ramp the digit up or down. This method offers a simple
solution when small changes to an output value are required, or if specific decades need
to be incremented or decremented.
e) When DC voltage mode is first selected, the 3001 is placed in the standby (Stby)
mode which puts the positive (+) output jack into a high impedance state

(>100k ohm) for safety. To place the output into the active state, press the
key which toggles between the standby and operate modes.
The standby mode is also activated in the following situations:
• If a fault occurs during operation, such as an overload or short circuit condition.
• As a safety feature for all new outputs over 30 VDC. Refer to the product specification
section of this manual for maximum drive currents.
• Warning. Scrolling the output when the output value is already over 30V will not place
the 3001 in standby mode for each new value.
• Warning. Automatic setpoints over 30V will not place the 3001 in standby mode for
each new value.
f) The 3001 can be locked to a specific voltage range by entering a value in that range

and then selecting the secondary RNG LOCK function by pressing the and

keys.

4.2 DC Current Output

The 3001 can source DC current from 0 mA to 100 mA.
a) Disconnect any test leads from external devices.

b) Press the key to select DC voltage and current mode, if not already selected.
If DC voltage mode is displayed, press the key again to cycle to DC current mode.
15
 c) Connect the unit under test to the current output terminals of the 3001 as shown in
figure 11.

Figure 11 - DC Current Output Connection

d) Use the numeric keypad to enter the desired output value and press the key.

Alternatively, use the or cursor key to select a digit to modify, followed by the
or cursor key to ramp the digit up or down. This method offers a simple
solution when small changes to an output value are required, or if specific decades
need to be incremented or decremented.
e) When DC current mode is first selected, the 3001 is placed in the standby (Stby)
mode which puts the positive (+) output jack into a high impedance state

(>100k ohm) for safety. To place the output into the active state, press the
key which toggles between the standby and operate modes.
The standby mode is also activated in the following situations:
• No connection made to the output terminals.
• The voltage compliance for a given output current is exceeded. The 3001 has a
typical voltage compliance of 10V so that 4-20mA application loads of up to 500
ohms can be driven. At maximum current of 100mA, the maximum load is 100
ohms.

4.3 Resistance Temperature Detector (RTD) and Ohms Measure

The 3001 can measure all common RTD types, 5 custom RTD curves, and a custom
SPRT in °F or °C, plus basic resistance from 0 to 4000 ohms.
The following common RTD types are supported:
Pt 385 100Ω, 200Ω, 500Ω, 1000Ω
Pt 3926 100Ω
Pt 3916 (JIS) 100Ω
Ni120 120Ω
Cu 427 (Minco) 10Ω
YSI 400
16
a) Disconnect any test leads from external devices.

b) Press the key to select thermocouple and RTD/Ω mode, if not already
selected. If thermocouple mode is displayed, press the key again to cycle to RTD/Ω
mode.

c) If output mode is displayed, select input mode by pressing the and

keys.

d) Press the key to select the desired RTD type, the custom curve, the SPRT, or
the desired ohms range. The set up and use of custom RTD coefficients is described
in section 4.5. The set up and use of SPRT coefficients is described in section 4.6.
e) Connect the unit under test to the 4 wire RTD/Ω input terminals of the 3001 as shown
in figure 12.

Figure 12 - RTD/Ω Input Connection

f) Press the and keys to toggle the RTD display between °F and °C.
g) For best accuracy, it is advisable to zero the RTD resistance circuit(s) daily, or if the
3001 is being used outside of the ambient temperature range of 18 to 28 °C. The
maximum offset from unit calibration that can be zeroed out is ±0.1 ohm for the high
range and ±0.01 ohm for the low range.
To zero a RTD resistance circuit:

• Select the RTD measure function as described above, and press the key
until the low or high ohms range is selected.
• Short the RTD/Ω terminals with the test leads normally used for RTD/Ω
measurements.
• Allow at least 3 minutes for the test leads and terminals to stabilize to the same
temperature.

• Press the and keys to zero the ohms range.

17
 4.4 Resistance Temperature Detector (RTD) and Ohms Source
The 3001 can source all common RTD types and 5 custom RTD curves in °F or °C, plus
basic resistance from 5 to 4000 ohms.
The following common RTD types are supported:
Pt 385 100Ω, 200Ω, 500Ω, 1000Ω
Pt 3926 100Ω
Pt 3916 (JIS) 100Ω
Ni120 120Ω
Cu 427 (Minco) 10Ω
YSI 400
a) Disconnect any test leads from external devices.

b) Press the key to select thermocouple and RTD/Ω mode, if not already
selected. If thermocouple mode is displayed, press the key again to cycle to RTD/Ω
mode.

c) If input mode is displayed, select output mode by pressing the and keys.

d) Press the key to select the desired RTD curve or ohms range. The set up
and use of custom RTD coefficients is described in section 4.5.
e) Connect the unit under test to the RTD/Ω output terminals of the 3001 as shown in
figure 13.

Figure 13 - RTD/Ω Output Connection

f) Press the and keys to toggle the RTD display between °F and °C.

g) Use the numeric keypad to enter the desired output value and press the key.

Alternatively, use the or cursor key to select a digit to modify, followed by the
or cursor key to ramp the digit up or down. This method offers a simple
solution when small changes to an output value are required, or if specific decades
need to be incremented or decremented.

18
 h) When RTD/Ω mode is first selected, the 3001 is placed in the standby (Stby) mode
which puts the positive (+) output jack into a high impedance state (>100k ohm) for

safety. To place the output into the active state, press the key which toggles
between the standby and operate modes.

4.5 Resistance Temperature Detector (RTD) with Custom Coefficients

The 3001 has the capability to store coefficients for up to 5 custom RTD curves.
To enter the coefficients for a custom RTD curve:
a) Select RTD measure or source mode as described in the preceding sections.

b) Press the key until the USR_DEF type is selected.

c) Press the key to display the curve selection prompt "RTD CUSTOM (1-
5)".
d) Press the numeric key corresponding to the custom RTD curve to be entered.

e) At the "SET(1)/RECALL(2)" prompt, press to select custom RTD curve

data entry.
f) At the "ENTER MIN TEMP" prompt, enter the minimum temperature limit for the

custom RTD curve, and press the key.

g) At the "ENTER MAX TEMP" prompt, enter the maximum temperature limit for

the custom RTD curve, and press the key.

h) At the "ENTER R0" prompt, enter the nominal resistance value (R0) for the

custom RTD curve, and press the key.

i) At the "ENTER COEFF A" prompt, enter the first (A) coefficient for the custom

RTD curve, and press the key. To enter a coefficient that includes an

exponent, enter the mantissa, press the and keys to select the EXP

function, enter the exponent, and press the key.

j) When prompted, enter the second (B) and third (C) coefficients in the same
manner.

k) To abort the curve entry without saving any changes, press the key.
To use a custom RTD curve:
a) Select RTD measure or source mode as described in the preceding sections.

b) Press the key until the USR_DEF type is selected.

c) Press the key to display the curve selection prompt "RTD CUSTOM (1-
5)".
19
 d) Press the numeric key corresponding to the custom RTD curve to be used.

e) At the "SET(1)/RECALL(2)" prompt, press to recall the custom RTD curve

coefficients.

f) To use a different custom RTD curve, press the key twice to display the
USR_DEF selection prompt.
The USR_DEF function of the 3001 uses the Calendar-Van Dusen equation for sourcing
and measuring custom RTD's. The C coefficient is only used for the subrange -260 to 0
degrees Celsius. Only the A and B coefficients are needed for the subrange 0 to 630
degrees. The R0 value is the resistance of the probe at 0 degrees Celsius.
All 5 of the custom RTD curves are set to PT385 at the factory, as shown in Table 2.

Table 2 - Default Custom RTD Coefficients

Curve Subrange R0 Coefficient A Coefficient B Coefficient C
1 0 to 630 100 3.9083e10-3 -5.775e10-7 0
2 -260 to 0 100 3.9083e10-3 -5.775e10-7 -4.183e10-12
3 0 to 630 100 3.9083e10-3 -5.775e10-7 0
4 -260 to 0 100 3.9083e10-3 -5.775e10-7 -4.183e10-12
5 0 to 630 100 3.9083e10-3 -5.775e10-7 0

Table 3 shows the coefficients for RTD types PT391 and PT392. The C coefficient is only
used for temperatures below 0 degrees Celsius.

Table 3 - Other Common RTD Coefficients

RTD Type R0 Coefficient A Coefficient B Coefficient C
PT392 100 3.9848e10-3 -5.87e10-7 -4.0e10-12
PT391 100 3.9692e10-3 -5.8495e10-7 -4.2325e10-12

4.6 Standard Platinum Resistance Thermometer (SPRT) Coefficients

The SPRT function of the 3001 uses ITS-90 standard coefficients as a basis for measuring
a SPRT. The five custom coefficients are entered as deviations from the standard
coefficients, and as such, all of them are set to zero at the factory.
The coefficients A- and B- represent the A4 and B4 coefficient, obtained when the SPRT is
calibrated at the triple points of argon, mercury and water. This covers the 83.8058K to
273.16K subrange. Coefficients A, B and C can represent different coefficients based on
which subranges of the SPRT has been calibrated. For example, if the 273.15K to
933.473K subrange was used, A, B and C would represent A7, B7 and C7 whereas if the
273.15K to 692.67K subrange was used, A and B would represent A8 and B8 and C=0.
To enter the deviation coefficients for a custom SPRT:
a) Select RTD measure mode as described in the preceding section.

20
 b) Press the key until the SPRT type is selected.

c) Press the key to display the action prompt "SET(1)/RECALL(2)".

d) Press to select custom SPRT data entry.

e) At the "ENTER MIN TEMP" prompt, enter the minimum temperature limit for the

custom SPRT, and press the key.

f) At the "ENTER MAX TEMP" prompt, enter the maximum temperature limit for

the custom SPRT, and press the key.

g) At the "ENTER RTPW" prompt, enter the nominal resistance value (RTPW) for

the custom SPRT, and press the key.

h) At the "ENTER COEFF A" prompt, enter the first (A) deviation coefficient for the

custom SPRT, and press the key. To enter a coefficient that includes an

exponent, enter the mantissa, press the and keys to select the EXP

function, enter the exponent, and press the key.

i) When prompted, enter the second (B), third (C), fourth (A-), and fifth (B-)
deviation coefficients in the same manner.

j) To abort the SPRT entry without saving any changes, press the key.

To use a custom SPRT:

a) Select RTD measure mode as described in the preceding section.

b) Press the key until the SPRT type is selected.

c) Press the key to display the action prompt "SET(1)/RECALL(2)".

d) Press to recall the custom SPRT curve coefficients.

e) To use a different custom SPRT, press the key twice to display the SPRT
selection prompt.

4.7 Thermocouple (T/C) Measure

The 3001 can measure all common thermocouple types in °F or °C, plus basic millivolts
from -10.0 to 75.0 mV.
The following common thermocouple types are supported:
B, C, E, J, K, L, N, R, S, T, U, XK, BP
a) Disconnect any test leads from external devices.

b) Press the key to select thermocouple and RTD/O mode, if not already
21
 selected. If RTD/O mode is displayed, press the key again to cycle to thermocouple
mode.

c) If output mode is displayed, select input mode by pressing the and

keys.

d) Press the key to select the desired thermocouple type or the millivolt range.
e) Connect the unit under test to the thermocouple terminals of the 3001 using a
standard T/C miniplug as shown in figure 14. One pin is wider than the other; do not
attempt to force the plug in the wrong polarization. The T/C wire used for the
connection must match the thermocouple type selected for proper cold junction
compensation. If the 3001 and the T/C miniplug are at different temperatures, wait at
least 3 minutes for the miniplug and terminals to stabilize to the same temperature.

Figure 14 - Thermocouple Input Connection

f) Press the and keys to toggle the thermocouple display between °F and
°C.

g) Press the and keys to toggle the cold junction compensation between
the internal temperature sensor and an external reference.
h) For best accuracy, it is advisable to zero the T/C millivolt circuit daily, or if the 3001 is
being used outside of the ambient temperature range of 18 to 28 °C. The maximum
offset from unit calibration that can be zeroed out is ±1 mV.
To zero the T/C millivolt circuit:
• Select the thermocouple measure function as described above, and press the

key until the millivolt range is selected.

• Insert the supplied thermocouple shorting jumper into the thermocouple terminals.
• Allow at least 3 minutes for the jumper and terminals to stabilize to the same
temperature.

• Press the and keys to zero the T/C millivolt circuit.

22
4.8 Thermocouple (TC) Source
The 3001 can source all common thermocouple types in °F or °C, plus basic millivolts
from -10.0 to 75.0 mV.
The following common thermocouple types are supported:
B, C, E, J, K, L, N, R, S, T, U, XK, BP
a) Disconnect any test leads from external devices.

b) Press the key to select thermocouple and RTD/Ω mode, if not already
selected. If RTD/Ω mode is displayed, press the key again to cycle to thermocouple
mode.

c) If input mode is displayed, select output mode by pressing the and

keys.

d) Press the key to select the desired thermocouple type or the millivolt range.
e) Connect the unit under test to the thermocouple terminals of the 3001 using a
standard T/C miniplug as shown in figure 15. One pin is wider than the other; do not
attempt to force the plug in the wrong polarization. The T/C wire used for the
connection must match the thermocouple type selected for proper cold junction
compensation. If the 3001 and the T/C miniplug are at different temperatures, wait at
least 3 minutes for the miniplug and terminals to stabilize to the same temperature.

Figure 15 - Thermocouple Output Connection

f) Press the and keys to toggle the thermocouple display between °F and
°C.

g) Press the and keys to toggle the cold junction compensation between
the internal temperature sensor and an external reference.

h) Use the numeric keypad to enter the desired output value and press the key.

Alternatively, use the or cursor key to select a digit to modify, followed by the

23
 or cursor key to ramp the digit up or down. This method offers a simple
solution when small changes to an output value are required, or if specific decades
need to be incremented or decremented.
i) For best accuracy, it is advisable to zero the T/C millivolt circuit daily, or if the 3001 is
being used outside of the ambient temperature range of 18 to 28 °C. This procedure
is described in section 4.7 on thermocouple measurements.

4.9 Pressure Measure

The 3001 can support the following types of pressure modules:
• BETA Calibrators Corporation BETA Port-P Modules
• Fluke Corporation Model 700 Series Modules
• Mensor Corporation Model 6100 Modules
The BETA modules require the use of the BETA BPPA-100 Adapter and offer the best
performance vs. cost. The adapter allows the user to "Hot Swap" a pressure module for
quick range changes. For applications that require very high accuracy the Mensor 6100
Series, while expensive, will yield the best accuracy. Pressure modules from Fluke will
plug directly into the 3001. It may be helpful to discuss your pressure needs with Martel
Technical Support before you purchase modules.
a) Connect the pressure module to the 3001 as shown in figure 16.

Figure 16 - Pressure Module Connection

b) Press the key. The 3001 automatically senses which pressure module is
attached and sets its range accordingly.

c) Press the key to select the desired pressure units for display.
d) Before attaching the module to the pressure source, zero the module as described in
the instruction sheet that came with the module. Procedures vary, but all end with

pressing the and keys.

e) Attach the module to the pressure source according to the instruction sheet that
came with the module, taking care to follow all safety precautions when dealing with
high pressures.
24
5. Isolated Inputs

5.1 Voltage Input

The 3001 can measure DC voltages from 0 V to 100 V, using the following two ranges for
maximum accuracy: 10 V, and 100 V.
a) Disconnect any test leads from external devices.

b) Press the key to select isolated DC voltage and current input mode, if not
already selected. If the desired DC voltage mode is not displayed, press the key
again to cycle to the desired DC voltage mode.
c) Connect the unit under test to the isolated voltage/current input terminals of the 3001
as shown in figure 17.

Figure 17 - Isolated DC Voltage Input Connection

5.2 Current Input

The 3001 can measure DC current from 0 mA to 50 mA.
a) Disconnect any test leads from external devices.

b) Press the key to select isolated DC voltage and current input mode, if not
already selected. If the DC current mode is not displayed, press the key again to
cycle to it.
c) Connect the unit under test to the isolated voltage/current input terminals of the 3001
as shown in figure 18.

25
 Figure 18 - Isolated DC Current Input Connection
d) If the UUT is a 2 wire loop powered transmitter that is disconnected from the wiring,

press the key to activate the 3001 internal 24V supply in series with the
current measuring circuit. The top line changes to 24mA LPWR to indicate that the
supply is activated. Press the key again to deactivate the supply, and the top line
reverts to 50mA RANGE.
e) If a 250 ohm resistor is required during a HART calibration procedure, press the

key to switch in the 3001 internal 250 ohm resistor. The word HART is
appended to the top line of the display to indicate that the resistor is switched in.
Press the key again to switch out the resistor, and the display reverts to its previous
state. This resistor lowers the maximum load driving capability from 1000 ohms at 20
mA to 750 ohms at 20 mA.

5.3 Pressure Input

The isolated pressure display uses the same physical pressure connector as the primary
display. It is possible to have both displays selected to pressure simultaneously, showing
the same source in different pressure units. See section 4.9 for a general discussion on
pressure module selection.
a) Connect the pressure module to the 3001 as shown in figure 19.

Figure 19 - Isolated Pressure Module Connection

26
 b) Press the key. The 3001 automatically senses which pressure module is
attached and sets its range accordingly.

c) If necessary, press the key again to cycle through the pressure units until the
desired one is displayed.
d) Before attaching the module to the pressure source, zero the module as described in
the instruction sheet that came with the module. Procedures vary, but all end with

pressing the and keys.

e) Attach the module to the pressure source according to the instruction sheet that
came with the module, taking care to follow all safety precautions when dealing with
high pressures.

6. Output Setpoints
Nine preset output setpoints may be stored and recalled for each of the following output
modes:
• Voltage
• Current
• each thermocouple type, including millivolts
• each RTD type, including each of the five custom curves.
They may be recalled on an individual basis, or as an automatic up and down cycle with
a configurable dwell time between each setpoint. The automatic cycle feature always
starts at setpoint number 1, stepping up to a user specified ending setpoint number, then
back down in reverse order, and then repeats.
To set a setpoint:
a) Select the output mode.
b) Enter the output value for the setpoint.

c) Press the and keys to select the SET function.

d) At the setpoint number selection prompt "SET POINT#", press the numeric key,
1 to 9, corresponding to the setpoint to be set.
e) If the automatic cycle feature is to be used, care should be taken to order the
setpoint values in an appropriate manner. It always cycles between setpoint
number 1 and a user specified ending setpoint number. The values in the
cycled group of setpoints should be entered with this in mind. Any random
setpoints used for individual checks can then be located after the usual ending
setpoint number.
To recall a single setpoint:
a) Select the output mode.

b) Press the and keys to select the RECALL function.

27
 c) At the setpoint number selection prompt "RECALL SPT#", press the numeric
key, 1 to 9, corresponding to the setpoint to be recalled.
To start an automatic setpoint cycle:
a) Select the output mode.

b) Press the and keys to select the AUTOSET function.

c) At the ending setpoint number selection prompt "AUTO SET POINT", press the
numeric key, 1 to 9, corresponding to the ending setpoint number for the cycle.
d) At the dwell time prompt "DWELL TIME", "5-500?", enter the number of

seconds, 5 to 500, to dwell at each setpoint value, followed by the key.

e) The key can be used at any time during the cycle without stopping it.
f) Press any other key to terminate the cycle.

7. Application Notes

7.1 P/I Transmitter

Figure 20 - P/I Transmitter Application

28
 1. Disconnect any test leads from external devices.
2. Select pressure input on the primary display as described in section 4.9.
3. Select current input on the isolated display as described in section 5.2. Select the
isolated loop power option. If a HART communicator is to be used for set up of the
transmitter, select the HART option.
4. Connect the transmitter as shown in figure 20.
5. Test and calibrate the transmitter per the manufacturer's instructions.

7.2 I/P Transmitter

Figure 21 - I/P Transmitter Application

1. Disconnect any test leads from external devices.
2. Select current output on the primary display as described in section 4.2.
3. Select pressure input on the isolated display as described in section 5.3
4. Connect the transmitter as shown in figure 21.
5. Test and calibrate the transmitter per the manufacturer's instructions.

29
 7.3 V/I Transmitter

Figure 22 - V/I Transmitter Application

1. Disconnect any test leads from external devices.
2. Select voltage output on the primary display as described in section 4.1
3. Select current input on the isolated display as described in section 5.2. Select the
isolated loop power option.
4. Connect the transmitter as shown in figure 22.
5. Test and calibrate the transmitter per the manufacturer's instructions.

7.4 RTD Test

Figure 23 - RTD Test Application

30
 1. Disconnect any test leads from external devices.
2. Select RTD input on the primary display as described in section 4.3. Select the RTD
type which corresponds to the RTD being tested.
3. Connect the RTD as shown in figure 23.
4. Test the RTD per the manufacturer's instructions.

7.5 RTD Transmitter

Figure 24 - RTD Transmitter Application

1. Disconnect any test leads from external devices.
2. Select RTD output on the primary display as described in section 4.4. Select the RTD
type which corresponds to the transmitter being tested.
3. Select current input on the isolated display as described in section 5.2. Select the
isolated loop power option. If a HART communicator is to be used for set up of the
transmitter, select the HART option.
4. Connect the transmitter as shown in figure 24.
5. Test and calibrate the transmitter per the manufacturer's instructions.

31
 7.6 Thermocouple Test

Figure 25 - Thermocouple Test Application

1. Disconnect any test leads from external devices.
2. Select thermocouple input on the primary display as described in section 4.7. Select
the thermocouple type which corresponds to the thermocouple being tested.
3. Connect the thermocouple as shown in figure 25.
4. Test the thermocouple per the manufacturer's instructions.

7.7 Thermocouple Transmitter

Figure 26 - Thermocouple Transmitter Application

32
 1. Disconnect any test leads from external devices.
2. Select thermocouple output on the primary display as described in section 4.8.
Select the thermocouple type which corresponds to the transmitter being tested.
3. Select current input on the isolated display as described in section 5.2. Select the
isolated loop power option. If a HART communicator is to be used for set up of the
transmitter, select the HART option.
4. Connect the transmitter as shown in figure 26.
5. Test and calibrate the transmitter per the manufacturer's instructions.

7.8 RTD Indicator

Figure 27 - RTD Indicator Application

1. Disconnect any test leads from external devices.
2. Select RTD output on the primary display as described in section 4.4. Select the RTD
type which corresponds to the indicator being tested.
3. Connect the indicator as shown in figure 27.
4. Test and calibrate the indicator per the manufacturer's instructions.

33
 7.9 Precision Current Trip

Figure 28 - Precision Current Trip Application

1. Disconnect any test leads from external devices.
2. Select current output on the primary display as described in section 4.2.
3. Select voltage input on the isolated display as described in section 5.1.
4. Connect the trip as shown in figure 28.
5. Test and calibrate the trip per the manufacturer's instructions.

34
7.10 I/I Isolator/Transmitter

Figure 29 - I/I Isolator/Transmitter Application

1. Disconnect any test leads from external devices.
2. Select current output on the primary display as described in section 4.2.
3. Select current input on the isolated display as described in section 5.2. Select the
isolated loop power option.
4. Connect the transmitter as shown in figure 29.
5. Test and calibrate the transmitter per the manufacturer's instructions.

35
 7.12 Precision Temperature Measurement with IBP-2 Probe

Figure 30 - Precision Temperature Measurement with IBP-2 Probe

1. With the IBP-2 probe and the corresponding custom coefficients, the total system
error is 0.03°C.
2. Disconnect any test leads from external devices.
3. Select RTD input on the primary display as described in section 4.3. Select the user
defined curve containing the custom coefficients for the IBP-2. If custom coefficients
have not yet been entered for the IBP-2, follow the instructions in section 4.5 to do so.
4. Connect the probe as shown in figure 30.

36
8. LCD and Remote Interface Setup Procedures
These procedures are accessed in sequence as follows:

a) Press the and keys to select the SETUP function.

b) At the "LCD CONTRAST" prompt, press the or key to adjust the LCD

contrast level. When complete, press the key.

c) At the "LCD BACKLIGHT" prompt, press the or key to adjust the LCD

backlight level. When complete, press the key.

d) At the "Remote Interface" prompt, press the or key to select the RS-232
interface or the GPIB interface. When the desired interface is selected, press

the key.
e) If the GPIB interface was selected, the "GPIB Address" prompt appears. Press
the or key to ramp through the possible addresses, 0 to 30. When the

desired address is displayed, press the key.

9. Remote Interface

9.1 Introduction
The 3001 can be controlled remotely from a personal computer (PC) using either a RS-
232 serial connection or an IEEE-488 parallel connection (also called a General Purpose
Interface Bus, or GPIB, connection). In either case, individual commands can be typed
into a terminal emulator program suitable for the connection type, or the calibrator can be
controlled by an automated PC program using the 3001 command set. You can write
your own automated PC program, or it may be possible to purchase a suitable third party
program and configure it for the 3001. Compatible software for IEEE-488 operation,
MET/CAL, may be purchased from Fluke.
The RS-232 connection allows one 3001 to be connected to one PC. The
communications speed is slower than IEEE-488, but no extra equipment is required other
than a low cost null modem cable.
The IEEE-488 connection allows up to 15 different calibrators, PC's, and items of test
equipment to be connected together in a bus arrangement. The communications speed
is much faster than RS-232, but it requires the purchase and installation of special PC
interface card(s) and connecting cable(s).
This section describes the set up of the two types of connections, and the general
operation of the command set. Section 10 describes the individual commands in detail.

37
 9.2 Setting up the RS-232 Port for Remote Control
The 3001 is fully programmable over a standard RS-232 link with a PC. The RS-232
cable length for the port should not exceed 15 meters (50 feet), although longer cable
lengths are permitted if the load capacitance measured at a connection point (including
signal terminator) does not exceed 2500 pF.
The serial communications parameters in the 3001 are fixed at the following values:
• 9600 baud
• 8 data bits
• 1 stop bit
• no parity
• Xon/Xoff
• EOL (end-of-line) character CR (Carriage Return)
A typical RS-232 connection is shown in Figure 31. Note the use of a null modem cable
for the connection. See section 2.5 for the location of the RS-232 port on the rear panel
of the 3001.

Figure 31 - RS-232 Remote Connection

9.3 Setting up the IEEE-488 Port for Remote Control

The 3001 is fully programmable for use on a standard IEEE-488 interface bus. The IEEE-
488 interface is also designed in compliance with supplemental standard IEEE-488.2,
which describes additional IEEE-488 features. Devices connected to the IEEE-488 bus
are designated as talkers, listeners, talker/listeners, or controllers. Under remote control
of an instrument, the 3001 operates as a talker/listener.
A PC equipped with an IEEE-488 interface controls the 3001. Compatible software for
IEEE-488 operation, MET/CAL, may be purchased from Fluke.
When using the IEEE-488 remote control interface, there are two restrictions:
• A maximum of 15 devices can be connected in a single IEEE-488 bus system.
38
 • The total length of IEEE-488 cables used in one IEEE-488 bus system is 2 meters
times the number of devices in the system, or 20 meters, whichever is less.
See section 8 for instructions on configuring the 3001 for IEEE-488 (GPIB) operation,
including selecting the interface and the bus address.
A typical IEEE-488 (GPIB) connection is shown in Figure 32. See section 2.5 for the
location of the IEEE-488 (GPIB) port on the rear panel of the 3001.

Figure 32 - IEEE-488 (GPIB) Remote Connection

9.4 Changing Between Local and Remote Operation

In addition to local mode (front panel operation) and remote, the 3001 can be placed into
a local lockout condition at any time by command of the controller. Combined, the local,
remote, and lockout conditions yield four possible operating states as follows.
a) Local State
The 3001 responds to local and remote commands. This is normal front panel
operation. All remote commands received by the 3001 are processed.
b) Local with Lockout State
Local with lockout is identical to local, except that the 3001 will go into the
remote with lockout state instead of the remote state when it receives a remote
command. This state can only be entered by sending the IEEE-488 command
GTL (Go To Local) when in the remote with lockout state.
c) Remote State
When the 3001 is placed in remote, either via a RS-232 REMOTE command, or
via the IEEE-488 asserting the REN line, it enters the remote state. The left end
of the top line of the display changes to: rem.
Front panel operation is disabled except for the LOCAL (0) key. Pressing the
LOCAL key, using RS-232 to send the LOCAL command, or IEEE-488 to send
the GTL (Go To Local) message, returns the 3001 to the local state.

39
 d) Remote with Lockout State
When the 3001 is placed in lockout, either via a RS-232 LOCKOUT command,
or via the IEEE-488 message LLO (Local Lockout), the 3001 front panel
controls are totally locked out. The left end of the top line of the display
changes to: rem.
To return the 3001 to the local with lockout state, send the RS-232 LOCAL
command or the IEEE-488 GTL (Go To Local) message.
Table 4 summarizes the possible operating state transitions. For more information on
IEEE-488 GPIB messages, see section 9.5.

Table 4 - Operating State Transitions

From To Front Panel GPIB Message Serial Command
Local Remote MLA (REN True) REMOTE
Local with Lockout LLO LOCKOUT
Remote Local Local 0 key GTL or REN False LOCAL
Remote with Lockout LLO LOCKOUT
Local with Local REN False LOCAL
Lockout Remote with Lockout MLA (REN True) REMOTE
Remote with Local REN False LOCAL
Lockout Local with Lockout GTL

9.5 IEEE-488 Interface Overview

The IEEE-488 parallel interface sends commands as data and receives measurements
and messages as data. The maximum data exchange rate is 1 Mbyte per second, with a
maximum distance of 20 meters for the total length of the connecting cables. A single
cable should not exceed 4 meters in length.
Several commands are used only for RS-232 serial operation because these functions
must be implemented as IEEE uniline (single control line) bus management messages
per the IEEE Standards. For example, the command REMOTE could be sent as data
over the IEEE-488 interface to place the 3001 into remote operating mode, but it is not
because the IEEE Standards call for the remote function to be sent to the device as the
uniline message REN. This is also true for several other commands and functions, as
shown in table 5 below with their RS-232 equivalents.
Table 5 - RS-232 Emulation of IEEE-488 Messages
IEEE-488 Message RS-232 Equivalent
GTL LOCAL command
GTR REMOTE command
LLO LOCKOUT command
SDC, DCL (not emulated on RS-232)
GET (not emulated on RS-232)
SPE, SPD (not emulated on RS-232)
UNL, UNT (not emulated on RS-232)
40
 The IEEE-488 interface is based on the IEEE Standards 488.1 and 488.2. For detailed
information, refer to the IEEE-488.1 and IEEE-488.2 standards.

9.6 Using Commands

Communications between the controller and the 3001 consist of commands, queries, and
interface messages. Although the commands are based on the 488.2 standard, they can
be used on either the IEEE-488 or RS-232 interface, except for a few specific RS-232 only
commands as described in the subsection Commands for RS-232 Only below.
For more detailed information on IEEE command structures, see the IEEE 488.2
standard.
Refer to section 10 for more detailed information about the commands referenced in this
section.
All commands, units, and text data may be entered in UPPER or lower case letters. The
3001 converts all lower case letters to upper case before processing.

9.6.1 Types of Commands

The commands for the 3001 can be grouped into the following categories based on how
they function.
a) Device-Dependent Commands
Device-dependent commands are unique to the 3001. An example of a device-
dependent command is:
OUT 1 V
This command instructs the 3001 to source 1 volt DC.
b) Common Commands
Common commands are defined by the IEEE 488.2 standard and are common
to most bus devices. Common commands always begin with an asterisk (*)
character. Common commands are available whether you are using the IEEE-
488 or RS-232 interface for remote control. An example of a common
command is:
*IDN?
This command instructs the 3001 to return the instrument identification string.
c) Query Commands
Query commands request information, which may be returned as the
command executes, or may be placed in a buffer until requested later. Query
commands always end with a question mark. An example of a query
commands is:
RANGE?
This command instructs the 3001 to return the present DC voltage output
range.
d) Interface Messages (IEEE-488)
Interface messages manage traffic on the IEEE-488 interface bus. Device
addressing and clearing, data handshaking, and commands to place status
bytes on the bus are all directed by interface messages. Some of the interface

41
 messages occur as state transitions of dedicated control lines. The rest of the
interface messages are sent over the data lines with the ATN signal true. All
device-dependent and common commands are sent over the data lines with
the ATN signal false.
An important thing to note about interface messages is that, unlike device-
dependent and common commands, interface messages are not sent literally
(in a direct way). They are converted to parallel signal levels on the bus data
and control lines.
IEEE-488 standards define interface messages which are handled automatically
in most cases.
e) Compound Commands
A compound command is two or more commands placed on a single
command line separated from each other with semicolons. For example,
consider the following two individual commands:
OUT 1 V
OPER
These could be combined into the compound command:
OUT 1 V; OPER
These commands instruct the 3001 to source 1 V DC, and then go into operate
mode.
f) Overlapped Commands
Commands that begin execution but require slightly more time than the normal
communication command/response interval to complete are called overlapped
commands. This is because they can be overlapped by receipt the next
command before they have been completed.
The detailed command descriptions in section 10 show a check mark T beside
Overlapped for overlapped commands.
Use the command *WAI to wait until the overlapped command has completed
execution before executing the next command. For example:
OUT 1 V; *WAI
You can also use the status commands *OPC and *OPC? to detect the
completion of overlapped commands.
g) Sequential Commands
Commands that execute immediately are called sequential commands.
The detailed command descriptions in section 10 show a check mark T beside
Sequential for sequential commands.
The majority of commands are sequential.
h) Commands for RS-232 Only
Several commands are used only for RS?232 serial operation because these
functions must be implemented as IEEE uniline (single control line) bus
management messages per the IEEE Standards. For example, the command
REMOTE could be sent as data over the IEEE-488 interface to place the 3001
into remote operating mode, but it is not because the IEEE Standards call for
42
 the remote function to be sent to the device as the uniline message REN. This
is also true for several other commands and functions, as shown in table 6
below with their RS-232 equivalents.
For these commands, the detailed command descriptions in section 10 show a
check mark X beside RS-232, but no check mark beside IEEE-488.
Table 6 - Commands for RS-232 Only
IEEE-488 Message RS-232 Equivalent
GTL LOCAL command
GTR REMOTE command
LLO LOCKOUT command

i) Commands for IEEE-488

These are all of the commands except for those used for RS-232 only, as
described above. All commands are transferred over the IEEE-488 as data,
except for the commands LOCAL, REMOTE, and LOCKOUT, which are
implemented per the IEEE Standards as uniline messages.
The detailed command descriptions in section 10 show a check mark T beside
IEEE-488 for these commands.

9.6.2 Command Syntax

The following syntax rules apply to all of the remote commands. Information about the
syntax of response messages is also given.
a) Parameter Syntax Rules
Table 7 lists the units accepted in command parameters and used in
responses. All commands and units may be entered in upper or lower case.
Table 7 - Units Accepted in Parameters and Used in Responses
Units Meaning
uV Volts in units of microvolts1
mV Volts in units of millivolts1
V Volts in units of volts
kV Volts in units of kilovolts1
uA Current in units of microamperes1
mA Current in units of milliamps1
A Current in units of amps
Ohm Resistance in units of ohms
kOhm Resistance in units of kilohms1
MOhm Resistance in units of megohms1
cel Temperature in degrees Celsius
far Temperature in degrees Fahrenheit
psi Pressure in pounds per square inch
43
 mmHg Pressure in millimeters of mercury at 0 °C
inHg Pressure in inches of mercury at 0 °C
inH2O4C Pressure in inches of water at 4 °C
inH2O20C Pressure in inches of water at 20 °C
inH2O60F Pressure in inches of water at 60 °F
cmH2O4C Pressure in centimeters of water at 4 °C
cmH2O20C Pressure in centimeters of water at 20 °C
mmH2O4C Pressure in millimeters of water at 4 °C
mmH2O20C Pressure in millimeters of water at 20 °C
bar Pressure in bar
mbar Pressure in millibar
kPa Pressure in kilopascals
MPa Pressure in megapascals
kg/cm2 Pressure in kilograms per square centimeter
1 Parameter only

b) General Rules
The general rules for parameter usage are as follows:
• Numeric parameters may have up 15 significant digits and their value can be
in the range +/-1.0E+/-20.
• Including too many or too few parameters causes a command error.
• Null parameters cause an error, e.g., the adjacent commas in OUT 1V,
,;OPER.
• Expressions, for example 4+2*13, are not allowed as parameters.
c) Extra Space or Tab Characters
In the command descriptions, parameters are shown separated by spaces. One
space after a command is required (unless no parameters are required). All other
spaces are optional. Spaces are inserted for clarity in the manual and may be left in
or omitted as desired. You can insert extra spaces or tabs between parameters as
desired. Extra spaces within a parameter are generally not allowed, except between
a number and its associated multiplier or unit.
d) Terminators
Table 8 summarizes the terminator characters for both the IEEE-488 and the RS-232
remote interfaces.

44
 Table 8 - Terminator Characters
Terminator Function ASCII Character Control Language
Command Command
Number Program Terminator Terminator
Carriage Return (CR) 13 Chr(13) <Cntl> M \n
Line Feed (LF) 10 Chr(10) <Cntl> J \r
Backspace (BS) 8 Chr(8) <Cntl> H \b
Form Feed (FF) 12 Chr(12) <Cntl> L \f
Examples:
RS-232 Mode, terminal: OUT 1 V <Enter>
RS-232 Mode, program: Comm1.Output = "OUT 1 V" + Chr(10)
IEEE-488 Mode: OUT 1 V

IEEE-488 interface:
The 3001 sends the ASCII character Carriage Return with the EOI control line
held high as the terminator for response messages. The 3001 recognizes the
following as terminators when encountered in incoming data:
• ASCII CR character
• Any ASCII character sent with the EOI control line asserted

RS-232 interface:
The 3001 sends a Carriage Return (CR) character as the terminator for response
messages. The 3001 recognizes the following as terminators when encountered in
incoming data:
• ASCII CR character
• ASCII LF character
e) Incoming Character Processing
The 3001 processes all incoming data as follows:
• The most significant data bit (DIO8) is ignored
• All data is taken as 7-bit ASCII
• Lower case or upper case characters are accepted, with lower case converted to
upper case before processing
f) Response Message Syntax
In the detailed command descriptions in section 10, the responses from the 3001 are
described wherever appropriate. In order to know what type of data to read in, refer
to the beginning of the response description for the command.

9.7 Checking 3001 Status

Figure 33 shows the status registers, enable registers, and queues in the 3001 which
indicate various conditions in the instrument. Some registers and queues are defined by
the IEEE-488.2 standard, while the rest are specific to the 3001. In addition to the status
registers, the Service Request (SRQ) control line and a 16-element buffer called the Error
Queue provide also status information.
45
 Figure 33 - Status Register Overview
Table 9 lists the status registers and gives the read/write commands and associated mask
registers used to access them.
Table 9 - Status Register Summary
Status Register Read Command Write Command
Serial Poll Status Byte (STB) *STB? —
Service Request Enable Register (SRE) *SRE? *SRE
Event Status Register (ESR) *ESR? —
Event Status Enable Register (ESE) *ESE? *ESE

Each status register and queue has a summary bit in the Serial Poll Status Byte. Enable
registers are used to mask various bits in the status registers and to generate summary
bits in the Serial Poll Status Byte. For IEEE-488 interface operation, the Service Request
Enable Register is used to assert the SRQ control line on detection of any status
condition or conditions that the programmer chooses. For RS-232 interface operation,
the SRQSTR string is sent over the serial interface when the SRQ line is set.
1) Serial Poll Status Byte (STB)

46
 The Calibrator sends the serial poll status byte (STB) when it responds to a serial poll.
This byte is cleared (set to 0) when the power is turned on. The STB byte structure is
shown in Figure 34. Refer to the *STB? command in section 10 for more information on
reading this register.
7 6 5 4 3 2 1 0
0 RQS ESB MAV EAV 0 0 0
MSS
RQS Requesting service. The RQS bit is set to 1 whenever bits ESB, MAV, EAV, or ISCB
change from 0 to 1 and are enabled (1) in the SRE. When RQS is 1, the 3001 asserts
the SRQ control line on the IEEE-488 interface. You can do a serial poll to read this
bit to see if the 3001 is the source of an SRQ.
MSS Master summary status. Set to 1 whenever bits ESB, MAV, EAV, or ISCB are 1 and
enabled (1) in the SRE. This bit can be read using the *STB? Remote command in
place of doing a serial poll.
ESB Set to 1 when one or more ESR bits are 1.
MAV Message available. The MAV bit is set to 1 whenever data is available in the 3001's
IEEE-488 interface output buffer.
EAV Error available. An error has occurred and an error is available to be read from the
error queue by using the FAULT? query.

Figure 34 - Serial Poll Status Byte (STB) and Service Request Enable (SRE) Registers
2) Service Request (SRQ) Line
IEEE-488 Service Request (SRQ) is an IEEE-488.1 bus control line that the 3001
asserts to notify the controller that it requires some type of service. Many instruments
can be on the bus, but they all share a single SRQ line. To determine which
instrument set SRQ, the Controller normally does a serial poll of each instrument. The
calibrator asserts SRQ whenever the RQS bit in its Serial Poll Status Byte is 1. This bit
informs the controller that the 3001 was the source of the SRQ.
The 3001 clears SRQ and RQS whenever the controller/host performs a serial poll,
sends *CLS, or whenever the MSS bit is cleared. The MSS bit is cleared only when
ESB and MAV are 0, or they are disabled by their associated enable bits in the SRE
register being set to 0.
3) Service Request Enable Register (SRE)
The Service Request Enable Register (SRE) enables or masks the bits of the Serial
Poll Status Byte. The SRE is cleared at power up. Refer to Figure 34 for the bit
functions.
4) Programming the STB and SRE
By resetting (to 0) the bits in the SRE, you can mask (disable) associated bits in the
serial poll status byte. Bits set to 1 enable the associated bit in the serial poll status
byte.
5) Event Status Register (ESR)
The Event Status Register is a two-byte register in which the higher eight bits are
always 0, and the lower eight bits represent various conditions of the 3001. The ESR
is cleared (set to 0) when the power is turned on, and every time it is read.

47
 Many of the remote commands require parameters. Improper use of parameters
causes command errors to occur. When a command error occurs, bit CME (5) in the
Event Status Register (ESR) goes to 1 (if enabled in ESE register), and the error is
logged in the error queue.
6) Event Status Enable (ESE) Register
A mask register called the Event Status Enable register (ESE) allows the controller to
enable or mask (disable) each bit in the ESR. When a bit in the ESE is 1, the
corresponding bit in the ESR is enabled. When any enabled bit in the ESR is 1, the
ESB bit in the Serial Poll Status Byte also goes to 1. The ESR bit stays 1 until the
controller reads the ESR, does a device clear, a selected device clear, or sends the
reset or *CLS command to the 3001. The ESE is cleared (set to 0) when the power
is turned on.
7) Bit Assignments for the ESR and ESE
The bits in the Event Status Register (ESR) and Event Status Enable register (ESE)
are assigned as shown in Figure 35.

15 14 13 12 11 10 9 8
0 0 0 0 0 0 0 0

7 6 5 4 3 2 1 0
PON 0 CME EXE DDE QYE 0 OPC
PON Power on. This bit is set to 1 if line power has been turned off and on since the last
time the ESR was read.
CME Command error. The IEEE-488 interface of the 3001 encountered an incorrectly
formed command and placed an error code in the error queue. The command
FAULT? can be used to fetch error codes from the error queue, which is described
in more detail below.
EXE Execution error. An error occurred when the 3001 tried to execute the last com-
mand and an error code was placed into the error queue. This could be caused,
for example, by a parameter being out of range. The command FAULT? can be
used to fetch error codes from the error queue, which is described in more detail
below.
DDE Device-dependent error. An error related to a device-dependent command has
occurred.
QYE Query error. The 3001 was addressed to talk when no response data was available
or appropriate, or when the controller failed to retrieve data from the output queue.
OPC Operation complete. All commands previous to reception of a *OPC command
have been executed, and the interface is ready to accept another message.

Figure 35 - Event Status Register (ESR) and Event Status Enable (ESE) Registers
8) Programming the ESR and ESE
To read the contents of the ESR, send the remote command, *ESR?. The ESR is
cleared (set to 0) every time it is read. To read the contents of the ESE, send the
remote command, *ESE?. The ESE is not cleared when it is read. When you read
either register, the 3001 responds by sending a decimal number that when converted
48
 to binary represents bits 0 through 15.
9) Output Queue
The output queue is loaded whenever a query is processed, and holds up to 250
characters. The controller reads it with a statement such as a BASIC INPUT
statement, removing what it reads from the queue. If the queue is empty, the 3001
does not respond to the INPUT statement from the controller. The Message Available
(MAV) bit in the Serial Poll Status Byte is 1 if there is something in the output queue,
and 0 if the output queue is empty.
10) Error Queue
When a command error, execution error, or device-dependent error occurs, its error
code is placed in the error queue where it can be read by the FAULT? command.
Reading the first error with the FAULT? command removes that error from the queue.
A response of 0 means the error queue is empty. The error queue is cleared when
you turn off the power, and when you use the *CLS (Clear Status) common
command. The error queue contains up to 15 entries. If more than 15 errors occur,
only the first 15 errors are kept in the queue. A 16th entry in the queue is always an
"error queue overflow" error, and all later errors are discarded until the queue is at
least partially read. The first errors are kept, because if many errors occur before the
user can acknowledge and read them, the earliest errors are the most likely to point
to the problem. The later errors are usually repetitions or consequences of the
original problem.
11) Input Buffer Operation
As the 3001 receives each data byte from the controller, it places the byte in a portion
of memory called the input buffer. The input buffer holds up to 250 data bytes and
operates in a first in, first out fashion.

IEEE-488 interface:
The 3001 treats the IEEE-488 EOI control line as a separate data byte and inserts it
into the input buffer if it is encountered as part of a message terminator. Input buffer
operation is transparent to the program running on the controller. If the controller
sends commands faster than the 3001 can process them, the input buffer fills to
capacity. When the input buffer is full, the 3001 holds off the IEEE-488 bus with the
NRFD (Not Ready For Data) handshake line. When the 3001 has processed a data
byte from the full input buffer, it then completes the handshake, allowing the
controller to send another data byte. The calibrator clears the input buffer on power-
up and on receiving the DCL (Device Clear) or SDC (Selected Device Clear) message
from the controller.

RS-232 interface:
The 3001 uses the RS-232-C Xon/Xoff protocol to control buffer overflow. The 3001
sends a Xoff (Ctrl S) character when the input buffer becomes 80% full, and sends a
Xon (Ctrl Q) character when it has processed enough of the input buffer so that it is
less than 40% full.

49
10. Remote Commands

10.1 Introduction
Remote commands duplicate actions that can be initiated from the front panel in local
operating mode. Following the summary table is a complete alphabetical listing of all
commands complete with protocol details. Separate headings in the alphabetical listing
provide the parameters and responses, plus an example for each command. For
information on using the commands, see section 9.

10.2 Command Summary by Function

Common Commands
Command Description
*CLS Clear status. Clears the ESR, the error queue, and the RQS bit in the status
byte. This command terminates any pending operation complete com-
mands, *OPC or *OPC?.
*ESE Loads a byte into the Event Status Enable register.
*ESE? Returns the contents of the Event Status Enable register.
*ESR? Returns the contents of the Event Status register and clears the register.
*IDN? Identification query. Returns the manufacturer, model number, serial number,
and firmware revision level of the Calibrator.
*OPC Sets bit 0 (OPC for Operation Complete) in the Event Status Register to 1
when all pending device operations are complete.
*OPC? Returns a 1 after all pending operations are complete. This command caus-
es program execution to pause until all operations are complete. See also
the *WAI command.
*OPT? Returns a list of the installed hardware and software options.
*RST Resets the state of the instrument to the power-up state. This command
holds off execution of subsequent commands until it is complete.
*SRE Loads a byte into the Service Request Enable register (SRE).
*SRE? Returns the byte from the Service Request Enable register.
*STB? Returns the status byte.
*TST? Runs a series of self-tests and returns a "0" for pass or a "1" for fail. If any
faults are detected, they are logged into the fault queue where they can be
read by the FAULT? query.
*WAI Prevents further remote commands from being executed until all previous
remote commands have been completed.

50
 External Connection Commands
Command Description
FUNC? Returns the present output, measurement, or calibration function selected on
the isolated and primary displays, in that order.
HART? Returns the HART resistor setting for the isolated milliamp range, ON or OFF.
HART_OFF Turns off the HART resistor on the isolated milliamp range.
HART_ON Turns on the HART resistor on the isolated milliamp range.
ISO_PRES_UNIT Sets the isolated display pressure units.
ISO_PRES_UNIT? Returns the isolated display pressure units.
LOOP_POWER? Returns the 24V loop power setting for the isolated milliamp range, ON or
OFF.
LOOP_POWER _OFF Turns off the 24V loop power on the isolated milliamp range.
LOOP_POWER _ON Turns on the 24V loop power on the isolated milliamp range.
PRES_UNIT Sets the primary display pressure units.
PRES_UNIT? Returns the primary display pressure units.
RTD_TYPE Sets the Resistance Temperature Detector (RTD) type.
RTD_TYPE? Returns the Resistance Temperature Detector (RTD) type.
TC_REF Selects the internal temperature sensor or an external reference value for
cold junction compensation of thermocouple (TC) source and measurement.
TC_REF? Returns the source of the temperature being used for cold junction compen-
sation of thermocouple (TC) source and measurement.
TC_TYPE Sets the thermocouple (TC) type.
TC_TYPE? Returns the thermocouple (TC) type.
TSENS_TYPE Sets temperature mode, RTD or TC.
TSENS_TYPE? Returns the temperature mode.

Output Commands
Command Description
OPER Activates the 3001 output if it is in standby mode.
OPER? Returns the operate/standby mode setting.
OUT Sets the output of the 3001.
OUT? Returns the present output value of the 3001.
RANGE? Returns the present output range, for voltage and current only.
RANGELCK Locks the present output range, for voltage only.
RANGELCK? Returns the RANGELOCK state, for voltage only.
STBY Deactivates the 3001 output if it is in operate mode.

51
 Measurement Commands
Command Description
ISO_MEAS Sets the isolated input measurement type.
PRES? Queries the attached pressure module for its manufacturer and serial num-
ber.
PRES_MEAS Changes the operating mode of the primary display to pressure measure-
ment.
RTD_MEAS Changes the operating mode to RTD measurement.
TC_MEAS Changes the operating mode to thermocouple measurement.
VAL? Returns the last values for the isolated and primary measurements, in that
order.
ZERO_MEAS Zeros the pressure module, TC mV, or RTD ohms.
ZERO_MEAS? Returns the zero offset for the pressure module, TC mV, or RTD ohms.

RS-232 Operating Mode Commands

Command Description
LOCAL Puts the 3001 into the local state and disables lockout.
LOCKOUT Puts the 3001 into the lockout state. This command duplicates the IEEE-488
LLO (Local Lockout) message.
REMOTE Puts the 3001 into the remote state. This command duplicates the IEEE-488
REN (Remote Enable) message.

Status Commands
Command Description
FAULT? Returns the most recent error code in the 3001 error queue, and then
removes that error code from the queue.

10.3 Error Code Listing

Error Number Message Class Description
1 DDE Error queue overflow.
100 EXE OPER or STBY was received when the 3001 is in measure
mode or thermocouple source mode.
101 CME A non-numeric entry was received in a field that should con-
tain a numeric entry.
102 EXE The numeric field exceeds 10 characters.
103 CME Invalid units name or prefix.
104 EXE An attempt to enter RTD source mode was made when SPRT
is selected, or to select SPRT when RTD source mode is
selected.
105 EXE Entry is above upper limit for the selected output range.
106 EXE Entry is below lower limit for the selected output range.
52
108 CME A required command parameter was missing.
109 CME An invalid TC_MEAS or RTD_MEAS unit parameter (not CEL
or FAR) was received, or an invalid PRES_UNIT or
ISO_PRES_UNIT parameter was received.
110 CME An invalid RANGELCK parameter was received.
111 EXE RANGELCK ON was received when the 3001 is not in Volts
mode.
112 CME An invalid RTD_TYPE parameter was received.
113 CME An invalid TC_REF parameter was received.
114 CME An invalid TSENS_TYPE parameter was received.
116 EXE No pressure module was present when a pressure function
was requested, or the total zero offset from calibration is more
than 6%. This error can also occur if the total zero offset from
calibration is out of limits when zeroing the thermocouple mil-
livolts type (maximum offset ±1 mV), or the RTD ohms type
(maximum ±0.1 ohm on high range, or ±0.01 ohm on the low
range).
117 CME An unrecognizable command was received.
118 CME An invalid parameter was received.
120 EXE The serial input buffer overflowed
121 EXE The command string buffer overflowed.
122 QYE The serial output buffer overflowed.
123 DDE The output overloaded. See display error message OVER
LOAD in section 2.7.
124 DDE The 3001 is out of tolerance. This error is set after a failed ini-
tialization or a failed *TST? command.
125 DDE The 3001 ADC has failed. This error is set after a failed initial-
ization or a failed *TST? command.

53
 10.4 Remote Command Listing
The following is an alphabetical list of all 3001 remote commands and queries, including
the common commands and the device-dependent commands. Each command title
includes a checkbox that indicates the remote interface applicability, IEEE-488 and/or RS-
232, and the command group, Sequential or Overlapped; see section 9.6.1 for a
description of these terms.

*CLS X IEEE-488 X RS-232 X Sequential Overlapped

Clear Status command. This command clears the ESR, the error queue, and the RQS bit
in the status byte. This command terminates any pending operation complete
commands, *OPC or *OPC?.
Parameter: <None>
Response: <None>
Example: *CLS
This example clears the ESR, the error queue, and the RQS bit in the
status byte.

*ESE X IEEE-488 X RS-232 X Sequential Overlapped

Event Status Enable command. This command loads a byte into the Event Status
Enable (ESE) register. See the Event Status Enable Register (ESE) description in section
9.7.
Parameter: <value>
where <value> is the decimal equivalent of the ESE byte, 0 to 255
Response: <None>
Example: *ESE 140
This example loads decimal 140 (binary 10001100) to enable bits 7
(PON), 3 (DDE) and 2 (QYE).

*ESE? X IEEE-488 X RS-232 X Sequential Overlapped

Event Status Enable query. This command returns the contents of the Event Status
Enable (ESE) register. See the Event Status Enable Register (ESE) description in section
9.7.
Parameter: <None>
Response: <value>
where <value> is the decimal equivalent of the ESE byte, 0 to 255
Example: *ESE?
133
This example returns decimal 133 (binary 10000101) which indicates
that bits 7 (PON), 2 (QYE), 1 (OPC) are enabled.

54
*ESR? X IEEE-488 X RS-232 X Sequential Overlapped
Event Status Register query. This command returns the contents of the Event Status
Register (ESR) and clears the register. See the Event Status Register (ESR) description in
section 9.7.
Parameter: <None>
Response: <value>
where <value> is the decimal equivalent of the ESR byte, 0 to 255
Example: *ESR?
61
This example returns decimal 61 (binary 00111101) which indicates
that bits 5 (CME), 4 (EXE), 3 (DDE), 2 (QYE) and 0 (OPC) are enabled.

FAULT? X IEEE-488 X RS-232 X Sequential Overlapped

This command returns the most recent error code from the error queue. If the queue is
empty (no errors have occurred) it returns 0. The command is normally used to verify
that the previous command did what it was intended to do.
Parameter: <None>
Response: <value>
where <value> is one of the error codes documented in section 10.3.
Example: FAULT?
105
This example shows the error code which would occur if the previous
command attempted to set a value above 100 mA for current output.
The error code 105 indicates that the value was above the upper limit
for the selected output range.

55
 FUNC? X IEEE-488 X RS-232 X Sequential Overlapped
This command returns the present output, measurement, or calibration function for the
primary and isolated displays.
Parameter: <None>
Response: <isolated>,<primary>
where <isolated> is one of the following:
DC10V measure DC voltage, 10V range
DC100V measure DC voltage, 100V range
DCI measure DC current
PRESSURE measure pressure
and where <primary> is one of the following:
DCV source DC voltage
DCI source DC current
RTD_OUT source RTD/Ohms
RTD_IN measure RTD/Ohms
TC_OUT source thermocouple
TC_IN measure thermocouple
PRESSURE measure pressure
Example: FUNC?
DC10V,PRESSURE
This example indicates that the isolated display is selected to the 10V
range and the primary display is selected to pressure.

HART? X IEEE-488 X RS-232 X Sequential Overlapped

This command returns the isolated DC current input HART resistor status.
Parameter: <None>
Response: <value>
where <value> is ON or OFF
Example: HART?
OFF
This example indicates that the isolated DC current input HART resistor
is turned off.

56
HART_OFF X IEEE-488 X RS-232 X Sequential Overlapped
This command disables the isolated DC current input HART resistor.
Parameter: <None>
Response: <None>
Example: HART_OFF
This example disables the isolated DC current input HART resistor.

HART_ON X IEEE-488 X RS-232 X Sequential Overlapped

This command enables the isolated DC current input HART resistor.
Parameter: <None>
Response: <None>
Example: HART_ON
This example enables the isolated DC current input HART resistor.

*IDN? X IEEE-488 X RS-232 X Sequential Overlapped

This command returns the unit identification: instrument manufacturer, model number,
serial number, and firmware revision level.
Parameter: <None>
Response: <text string>
where <text string> contains the following four fields separated by
commas:
1. Manufacturer
2. Model number
3. Serial number (always 0)
4. Firmware revision level
Example: *IDN?
MARTEL, 3001,0,1.2
This example indicates the manufacturer is Martel, the model is 3001,
the serial number is 0, and the firmware version is 1.2.

57
 ISO_MEAS X IEEE-488 X RS-232 Sequential X Overlapped
This command sets the isolated measurement type.
Parameter: <value>
where <value> is one of the following:
DC10V measure DC voltage, 10V range
DC100V measure DC voltage, 100V range
DCI measure DC current
PRESSURE measure pressure
Response: <None>
Example: ISO_MEAS DCI
This example sets the isolated measurement to DC current.

ISO_PRES_UNIT X IEEE-488 X RS-232 Sequential X Overlapped

This command sets the isolated pressure unit.
Parameter: <value>
where <value> is one of the following:
PSI pounds per square inch
INH2O4C inches of water at 4 °C
INH2O20C inches of water at 20 °C
INH2O60F inches of water at 60 °F
CMH2O4C centimeters of water at 4 °C
CMH2O20C centimeters of water at 20 °C
MMH2O4C millimeters of water at 4 °C
MMH2O20C millimeters of water at 20 °C
BAR bars
MBAR millibars
KPA kilopascals
MPA megapascals
INHG inches of mercury at 0 °C
MMHG millimeters of mercury at 0 °C
KG/CM2 kilograms per square centimeter
Response: <None>
Example: ISO_PRES_UNIT BAR
This example sets the isolated pressure unit to bars.

58
ISO_PRES_UNIT? X IEEE-488 X RS-232 X Sequential Overlapped
This command returns the isolated pressure unit.
Parameter: <None>
Response: <value>
where <value> is one of the following:
PSI pounds per square inch
INH2O4C inches of water at 4 °C
INH2O20C inches of water at 20 °C
INH2O60F inches of water at 60 °F
CMH2O4C centimeters of water at 4 °C
CMH2O20C centimeters of water at 20 °C
MMH2O4C millimeters of water at 4 °C
MMH2O20C millimeters of water at 20 °C
BAR bars
MBAR millibars
KPA kilopascals
MPA megapascals
INHG inches of mercury at 0 °C
MMHG millimeters of mercury at 0 °C
KG/CM2 kilograms per square centimeter
Example: ISO_PRES_UNIT?
BAR
This example indicates that the isolated pressure unit is bars.

LOCAL IEEE-488 X RS-232 X Sequential Overlapped

This command puts the 3001 into the local state, clearing the remote state (see the
REMOTE command) and the front panel lockout state (see the LOCKOUT command). It
duplicates setting the IEEE-488 REN line to false.
Parameter: <None>
Response: <None>
Example: LOCAL
This example puts the instrument into the local state, clearing the
remote state and front panel lockout state, if enabled.

59
 LOCKOUT IEEE-488 X RS-232 X Sequential Overlapped
This command puts the 3001 into the lockout state when in remote control (see the
REMOTE command). In this state, no local operation is allowed at the front panel,
including the LOCAL key. To clear the lockout condition, use the LOCAL command. This
command duplicates the IEEE-488 LLO (Local Lockout) message.
Parameter: <None>
Response: <None>
Example: LOCKOUT
This example puts the instrument into the lockout state. No front panel
controls can be used.

LOOP_POWER? X IEEE-488 X RS-232 X Sequential Overlapped

This command returns the isolated DC current input 24V loop power status.
Parameter: <None>
Response: <value>
where <value> is ON or OFF
Example: LOOP_POWER?
OFF
This example indicates that the isolated DC current input 24V loop
power is turned off.

LOOP_POWER_OFF X IEEE-488 X RS-232 X Sequential Overlapped

This command disables the isolated DC current input 24V loop power.
Parameter: <None>
Response: <None>
Example: LOOP_POWER_OFF
This example disables the isolated DC current input 24V loop power.

LOOP_POWER_ON X IEEE-488 X RS-232 X Sequential Overlapped

This command enables the isolated DC current input 24V loop power.
Parameter: <None>
Response: <None>
Example: LOOP_POWER_ON
This example enables the isolated DC current input 24V loop power.

60
*OPC X IEEE-488 X RS-232 X Sequential Overlapped
Operations Complete command. This command sets bit 0 (OPC) of the Event Status
Register to 1 when all pending device operations are complete. Also see the *ESR?
command.
Parameter: <None>
Response: <None>
Example: *OPC
This example sets bit 0 of the Event Status Register to 1 when all
pending device operations are done.

*OPC? X IEEE-488 X RS-232 X Sequential Overlapped

Operations Complete query. This command returns a 1 after all pending 3001 operations
are complete. This command does not respond until all pending 3001 operations are
complete, causing the control program execution to pause until operations are complete.
Also see the *WAI command.
Parameter: <None>
Response: 1
Example: *OPC?
1
This example does not respond until all pending 3001 operations are
complete, and then returns 1.

OPER X IEEE-488 X RS-232 Sequential X Overlapped

This command places the 3001 in operate mode, activating the output at front panel
terminals. This command acts the same as pressing the front panel key when in
standby mode.
Parameter: <None>
Response: <None>
Example: OPER
This example connects the selected output to the 3001 front panel
terminals. It also indicates Opr on the display.

61
 OPER? X IEEE-488 X RS-232 X Sequential Overlapped
This command returns the present operate/standby mode setting.
Parameter: <None>
Response: <value>
where <value> is "1" for operate mode and "0" for standby mode
Example: OPER?
1
This example indicates that the 3001 is in operate mode.

*OPT? X IEEE-488 X RS-232 X Sequential Overlapped

This command returns a list of the installed hardware and software options. This
command is reserved for future use.
Parameter: <None>
Response: <text string>
where <text string> is "0" if no options are installed, or a list of installed
options separated by commas
Example: *OPT?
0
The example indicates that no options are installed.

OUT X IEEE-488 X RS-232 Sequential X Overlapped

This command sets the output mode and value of the 3001. To source a temperature,
select the desired mode and sensor parameters first with the TSENS_TYPE, RTD_TYPE,
and TC_TYPE commands. Use the multiplier prefixes k for kilo, m for milli, and u for
micro with the OUT command units, as desired. The unit may be omitted if the output
mode is not to be changed.
Parameter: <value> <units>
where <value> is the output value to be generated
and where <units> is one of the following, with a possible prefix
multiplier (k, m, or u) as described above:
V DC volts
A DC current
OHM Resistance
CEL Temperature in Celsius
FAR Temperature in fahrenheit
Response: <None>

62
Examples: Explanation
OUT 15.2 V Change to DC volts, output 15.2 V
OUT 1.2 mA Change to DC current, output 1.2 mA, note units prefix
multiplier m
OUT 5 Ohm Change to Resistance, output 5 O
OUT 100 CEL Change to temperature in °C, output 100 °C
OUT 3 No change to output mode, output a value of 3 in the
present units

OUT? X IEEE-488 X RS-232 X Sequential Overlapped

This command returns the present output value and units of the 3001.
Parameter: <None>
Response: <value>,<units>
where <value> is the present output value
and where <units> is one of the following:
V DC volts
A DC current
OHM Resistance
CEL Temperature in Celsius
FAR Temperature in fahrenheit

Examples: Explanation
OUT?
1.88300E-02,A Present output is 18.83 mA
OUT?
1.23000E+00,V Present output is 1.23 V
OUT?
4.00000E+03,OHM Present output is 4.0 KO
OUT?
1.0430E+02,CEL Present output is 104.3 °C

63
 PRES? X IEEE-488 X RS-232 X Sequential Overlapped
This command queries the attached pressure module for its manufacturer, serial number,
and firmware version.
Parameter: <None>
Response: <text string>
where <text string> contains the following three fields separated by
commas:
1. Manufacturer
2. Serial number
3. Firmware revision level (always 0)
Example: PRES?
MARTEL,610070,0
This example indicates that the manufacturer is Martel, the serial
number is 610070, and the firmware version is 0.

PRES_MEAS X IEEE-488 X RS-232 Sequential X Overlapped

This command changes the primary display operating mode to pressure measurement.
Parameter: <None>
Response: <None>
Example: PRES_MEAS
This example changes the primary display operating mode to pressure
measurement.

64
PRES_UNIT X IEEE-488 X RS-232 Sequential X Overlapped
This command sets the primary display pressure units.
Parameter: <value>
where <value> is one of the following:
PSI pounds per square inch
INH2O4C inches of water at 4 °C
INH2O20C inches of water at 20 °C
INH2O60F inches of water at 60 °F
CMH2O4C centimeters of water at 4 °C
CMH2O20C centimeters of water at 20 °C
MMH2O4C millimeters of water at 4 °C
MMH2O20C millimeters of water at 20 °C
BAR bars
MBAR millibars
KPA kilopascals
MPA megapascals
INHG inches of mercury at 0 °C
MMHG millimeters of mercury at 0 °C
KG/CM2 kilograms per square centimeter
Response: <None>
Example: PRES_UNIT BAR
This example sets the primary display pressure units to bars.

PRES_UNIT? X IEEE-488 X RS-232 X Sequential Overlapped

This command returns the primary display pressure units.
Parameter: <None>
Response: <value>
where <value> is one of the following:
PSI pounds per square inch
INH2O4C inches of water at 4 °C
INH2O20C inches of water at 20 °C
INH2O60F inches of water at 60 °F
CMH2O4C centimeters of water at 4 °C
CMH2O20C centimeters of water at 20 °C
MMH2O4C millimeters of water at 4 °C
MMH2O20C millimeters of water at 20 °C
BAR bars
MBAR millibars
KPA kilopascals
MPA megapascals
INHG inches of mercury at 0 °C
MMHG millimeters of mercury at 0 °C
KG/CM2 kilograms per square centimeter
Example: PRES_UNIT?
65
 BAR
This example indicates that the primary pressure display units are bars

RANGE? X IEEE-488 X RS-232 X Sequential Overlapped

This command returns the present DC voltage or current output range.
Parameter: <None>
Response: <value>
where <value> is one of the following:
V_0.1V DC volts, 100 mV range
V_1V DC volts, 1V range
V_10V DC volts, 10 V range
V_100V DC volts, 100 V range
A_0.1A DC current
NONE neither volts nor current is selected
Example: RANGE?
V_10V
This example indicates that the present output range is 10 V.

RANGELCK X IEEE-488 X RS-232 X Sequential Overlapped

This command locks or unlocks the DC voltage output range per the present output
value.
Parameter: <value>
where <value> is one of the following:
ON to lock the present voltage range
OFF to unlock the present voltage range
Response: <None>
Example: RANGELCK ON
If the present DC voltage output is 5 V, this example locks the range at
10 VDC.

66
RANGELCK? X IEEE-488 X RS-232 X Sequential Overlapped
This command returns the DC voltage range lock status.
Parameter: <None>
Response: <value>
where <value> is one of the following:
ON DC voltage range lock is on
OFF DC voltage range lock is off
Example: RANGELCK?
OFF
This example indicates that the range lock is off.

REMOTE IEEE-488 X RS-232 X Sequential Overlapped

This command places the 3001 into the remote state. It duplicates the IEEE-488 REN
(Remote Enable) message. When the 3001 is in the remote state, but not locked out,
only the LOCAL key is active. If the front panel is also locked out, no front panel keys are
active; see the LOCKOUT command. To unlock the front panel, use the LOCAL
command, or cycle the 3001 power switch.
Parameter: <None>
Response: <None>
Example: REMOTE
This example places the 3001 into the remote state.

*RST X IEEE-488 X RS-232 Sequential X Overlapped

This command resets the 3001 to the power-up state and holds off execution of
subsequent commands until the reset operation is complete.
A reset action invokes the following commands and values for the primary display:
Command Value
OUT 0V
PRES_UNIT Last selected
RANGE 0.1 V
RTD_TYPE Last selected
STBY (No output)
TC_REF INT
TC_TYPE Last selected
TSENS_TYPE Last selected
The isolated display and selections remain as they were last selected.
Parameter: <None>
Response: <None>
Example: *RST
This example resets the 3001, invoking the commands and values
shown above.
67
 RTD_MEAS X IEEE-488 X RS-232 X Sequential Overlapped
This command places the primary display in RTD measure mode.
Parameter: <value>
where <value> is one of the following:
CEL display in degrees celsius
FAR display in degrees fahrenheit
<None> display in the last selected temperature unit
Response: <None>
Example: RTD_MEAS CEL
This example sets the 3001 to RTD measure mode, displaying in
degrees celsius.

RTD_TYPE X IEEE-488 X RS-232 Sequential X Overlapped

This command sets the Resistance Temperature Detector (RTD) sensor type for RTD
source and measure. Normally, before using the RTD_TYPE command to select the RTD
type, use the TSENS_TYPE command to select RTD mode, and afterwards set the output
temperature using the OUT command, if applicable. A change in temperature sensors
sets the output to 0 °C. Note that the SPRT can only be used to measure signals, not
source them.
Parameters: <value>
where <value> is one of the following:
PT385_100 100-ohm RTD, curve a=0.00385 ohms/ohm/°C
PT385_200 200-ohm RTD, curve a=0.00385 ohms/ohm/°C
PT385_500 500-ohm RTD, curve a=0.00385 ohms/ohm/°C
PT385_1000 1000-ohm RTD, curve a=0.00385 ohms/ohm/°C
PT392_100 100-ohm RTD, curve a=0.003926 ohms/ohm/°C
PTJIS_100 100-ohm RTD, curve a=0.003916 ohms/ohm/°C
CU10 10-ohm RTD, empirical curve
NI120 120-ohm RTD, empirical curve
YSI_400 YSI thermistor curve
OHMS_HIGH 4000 ohms range
OHMS_LOW 400 ohms range
SPRT standard PRT with user defined error coefficients, only
available for measurement
USR_DEF<x> RTD with user defined custom coefficients, where x is
the curve number and ranges from 1 to 5, i.e.
USR_DEF2 for curve 2
Response: <None>
Example: RTD_TYPE PTJIS_100
This example sets the RTD sensor to a 100-ohm type, using the
PT3916 curve (a=0.003916 ohms/ohm/°C). The resistance of 100
ohms refers to the ice point characteristic, the resistance of the RTD at
0 °C (32 °F).
68
RTD_TYPE? X IEEE-488 X RS-232 X Sequential Overlapped
This command returns the Resistance Temperature Detector (RTD) sensor type being
used for RTD temperature source and measurement.
Parameter: <None>
Response: <value>
where <value> is one of the following:
PT385_100 100-ohm RTD, curve a=0.00385 ohms/ohm/°C
PT385_200 200-ohm RTD, curve a=0.00385 ohms/ohm/°C
PT385_500 500-ohm RTD, curve a=0.00385 ohms/ohm/°C
PT385_1000 1000-ohm RTD, curve a=0.00385 ohms/ohm/°C
PT392_100 100-ohm RTD, curve a=0.003926 ohms/ohm/°C
PTJIS_100 100-ohm RTD, curve a=0.003916 ohms/ohm/°C
CU10 10-ohm RTD, empirical curve
NI120 120-ohm RTD, empirical curve
YSI_400 YSI thermistor curve
OHMS_HIGH 4000 ohms range
OHMS_LOW 400 ohms range
SPRT standard PRT with user defined error coefficients, only
available for measurement
USR_DEF<x> RTD with user defined custom coefficients, where x is
the curve number and ranges from 1 to 5, i.e.
USR_DEF2 for curve 2
Example: RTD_TYPE?
PTJIS_100
This example indicates that the RTD sensor type is a 100-ohm RTD
with curve a=0.3916 ohm/°C.

69
 *SRE X IEEE-488 X RS-232 X Sequential Overlapped
Service Request Enable command. This command loads a byte into the Service Request
Enable (SRE) register. See the Service Request Enable Register (SRE) description in
section 9.7. Since bit 6 is not used (decimal value 64), the maximum entry is 255 - 64 =
191.
Parameter: <value>
where <value> is the decimal equivalent of the SRE byte, 0 to 191
Response: <None>
Example: *SRE 48
This example enables bits 4 (MAV) and 5 (ESB).

*SRE? X IEEE-488 X RS-232 X Sequential Overlapped

Service Request Enable query. This command returns the byte in the Service Request
Enable Register (SRE). See the Service Request Enable Register (SRE) description in
section 9.7.
Parameter: <None>
Response: <value>
where <value> is the decimal equivalent of the SRE byte, 0 to 191
Example: *SRE?
48
This example indicates that bits 4 (MAV), and 5 (ESB) are enabled.

*STB? X IEEE-488 X RS-232 X Sequential Overlapped

Status Byte Register query. This command returns the byte in the Status Byte Register.
See the Status Byte Register (STB) description in section 9.7.
Parameter: <None>
Response: <value>
where <value> is the decimal equivalent of the STB byte, 0 to 255
Example: * STB?
96
This example indicates that bits 5 (ESB) and 6 (MSS) are set.

70
STBY X IEEE-488 X RS-232 Sequential X Overlapped
This command places the 3001 in standby mode, deactivating the output at front panel
terminals. This command acts the same as pressing the front panel key when in
operate mode.
Parameter: <None>
Response: <None>
Example: STBY
This example disconnects the selected output from the 3001 front
panel terminals. It also indicates Stby on the display.

TC_MEAS X IEEE-488 X RS-232 X Sequential Overlapped

This command places the primary display in thermocouple measure mode.
Parameter: <value>
where <value> is one of the following:
CEL display in degrees celsius
FAR display in degrees fahrenheit
<None> display in the last selected temperature unit
Response: <None>
Example: TC_MEAS FAR
This example sets the 3001 to thermocouple measure mode,
displaying in degrees fahrenheit.

TC_REF X IEEE-488 X RS-232 Sequential X Overlapped

This command selects the internal temperature sensor or an external reference value for
cold junction compensation of thermocouple source and measurement.
Parameter: <value>
where <value> is one of the following:
INT use internal temperature sensor
EXT use external reference value
Response: <None>
Example: TC_REF EXT
This example sets the thermocouple reference to external.

71
 TC_REF? X IEEE-488 X RS-232 X Sequential Overlapped
This command returns the source of the temperature being used for cold junction
compensation of thermocouple source and measurement.
Parameter: <None>
Response: <value>
where <value> is one of the following:
INT internal temperature sensor in use
EXT external reference value in use
Example: TC_REF?
INT
This example indicates that the internal sensor is in use.

TC_TYPE X IEEE-488 X RS-232 Sequential X Overlapped

This command sets the Thermocouple (TC) sensor type being used for TC temperature
source and measurement. Normally, before using the TC_TYPE command to select the
TC type, use the TSENS_TYPE command to select TC mode, and afterwards set the
output temperature using the OUT command, if applicable. A change in temperature
sensors sets the output to 0 °C.
Parameters: <value>
where <value> is one of the following:
B B-type thermocouple
C C-type thermocouple
E E-type thermocouple
J J-type thermocouple
K K-type thermocouple
L L-type thermocouple
N N-type thermocouple
R R-type thermocouple
S S-type thermocouple
T T-type thermocouple
U U-type thermocouple
XK XK-type thermocouple
BP BP-type thermocouple
Z 1 mV/°C
Response: <None>
Example: TC_TYPE J
This example sets the thermocouple type to J-type.

72
TC_TYPE? X IEEE-488 X RS-232 X Sequential Overlapped
This command returns the Thermocouple (TC) sensor type being used for TC
temperature source and measurement.
Parameter: <None>
Response: <value>
where <value> is one of the following:
B B-type thermocouple
C C-type thermocouple
E E-type thermocouple
J J-type thermocouple
K K-type thermocouple
L L-type thermocouple
N N-type thermocouple
R R-type thermocouple
S S-type thermocouple
T T-type thermocouple
U U-type thermocouple
XK XK-type thermocouple
BP BP-type thermocouple
Z 1 mV/°C
Example: TC_TYPE?
K
This example indicates that the thermocouple sensor type is K-type.

TSENS_TYPE X IEEE-488 X RS-232 Sequential X Overlapped

This command sets the temperature mode to thermocouple (TC) or Resistance
Temperature Detector (RTD) for temperature source and measurement.
Parameters: <value>
where <value> is one of the following:
TC Thermocouple
RTD Resistance Temperature Detector
Response: <None>
Example: TSENS_TYPE RTD
This example sets the temperature mode to RTD.

73
 TSENS_TYPE? X IEEE-488 X RS-232 X Sequential Overlapped
This command returns the present temperature mode, thermocouple (TC) or Resistance
Temperature Detector (RTD).
Parameter: <None>
Response: <value>
where <value> is one of the following:
TC Thermocouple
RTD Resistance Temperature Detector
Example: TSENS_TYPE?
TC
This example indicates that the present temperature mode is
thermocouple.

*TST? X IEEE-488 X RS-232 X Sequential Overlapped

This command runs a series of self-tests and returns a "0" for pass or a "1" for fail. If any
faults are detected, they are logged into the fault queue where they can be read by the
FAULT? query.
Parameter: <None>
Response: <value>
where <value> is one of the following:
0 failed self test
1 passed self test
Example: *TST?
1
This example runs the self test and indicates that it passed.

VAL? X IEEE-488 X RS-232 X Sequential Overlapped

This command returns the last values for the isolated and primary measurements, in that
order.
Parameter: <None>
Response: <iso-value>,<iso-units>,<primary-value>,<primary-units>
where <iso-value> is the present isolated measurement expressed in
scientific notation.
and where <iso-units> is one of the following:
V DC volts
A DC current
OVER measurement is over or under range
or one of the pressure units listed with the
ISO_PRES_UNIT? command
and where <primary-value> is the present primary measurement

74
 expressed in scientific notation.
and where <primary-units> is one of the following:
FAR °F
CEL °C
OHM Ohms
V DC volts (thermocouple millivolts)
OVER measurement is over or under range
NONE primary display is presently set to a source mode
or one of the pressure units listed with the PRES_UNIT?
command
Example: VAL?
2.137000E+00,V,5.763300E+01,CEL
This example indicates that the isolated measurement is 2.137 volts
and that the primary measurement is 57.633 °C.

*WAI X IEEE-488 X RS-232 X Sequential Overlapped

This command prevents further remote commands from being executed until all previous
remote commands have been completed. For example, if you send an OUT command,
you can cause the 3001 to wait until the output has settled before continuing on to the
next command if you follow OUT with a *WAI command. The *WAI command is useful
with any overlapped command, preventing the 3001 from processing other commands
until the overlapped command is completed.
Parameter: <None>
Response: <None>
Example: OUT 1.1 V
*WAI
OPER
FAULT?
This example demonstrates setting the 3001 output to 1.1 volts, waiting
for the output to settle before activating the output and checking if the
sequence of commands completed successfully.

ZERO_MEAS X IEEE-488 X RS-232 X Sequential Overlapped

This command zeros a pressure module, the thermocouple mV offset, or the RTD ohms
offset. For detailed zeroing instructions see section 4.3 for RTD ohms, section 4.7 for
thermocouple millivolts, or section 4.9 for pressure.
Parameter: <None> for RTD ohms, thermocouple millivolts, or a pressure module
that does not measure absolute pressure
<value> is barometric pressure for absolute pressure modules,
expressed in the currently selected pressure units
Response: <None>
Example: ZERO_MEAS
If thermocouple millivolts are currently selected, this example zeros the
offset.
75
 ZERO_MEAS? X IEEE-488 X RS-232 X Sequential Overlapped
This command returns the zero offset for pressure modules, thermocouple millivolts, or
RTD ohms.
Parameter: <None>
Response: <zero offset>,<units>
where < zero offset > is the current offset.
and where <units> is one of the following:
OHM Ohms
V DC volts (thermocouple millivolts)
or one of the pressure units listed with the PRES_UNIT?
command
Example: ZERO_MEAS?
1.060000E-01,PSI
This example indicates that the pressure zero for the attached module
is 0.106 psi.

76
11. Maintenance

11.1 Cleaning the Calibrator

Warning
To avoid personal injury and/or damage to the Calibrator, use only the specified
replacement parts and do not allow water into the case.

Caution
To avoid damaging the case, do not use solvents or abrasive cleaners.

Clean the calibrator and pressure modules with a soft cloth dampened with water, or mild
soap and water.

11.2 Replacing a Line Fuse

Warning
To avoid electrical shock hazard disconnect line power before opening the case or
fuse compartment.

The line power fuses and line voltage selector are located in the compartment above the
power switch on the right rear of the Calibrator. See the rear panel layout in section 2.5.
Table 10 shows the correct replacement fuse for each line voltage setting.
Table 10 - Replacement Fuses
Fuse Description Line Voltage Setting
0.25 A/250 V fast 120 V (90 V to 132 V)
0.125 A/250 V fast 240 V (198 V to 264 V)

To check or replace a fuse:

1. Disconnect the line power.
2. Using the blade of a suitable flat screwdriver, pry up the tab at the base of the
line fuse compartment by inserting the blade in the center slot under the tab.
The compartment cover will pop part way out.
3. Remove the compartment cover. The fuses come out with the compartment
cover and can easily be checked or replaced.
4. To reinstall the fuse holder, push the compartment cover back into the
compartment until the tab locks in place.

77
 11.3 Changing the Line Voltage
The calibrator arrives from the factory configured for the line voltage appropriate for the
country of purchase, or as specified when it is ordered. To verify the line voltage setting,
check the line voltage indicator on the power line fuse compartment cover.
Confirm that the line voltage selection is set for 120 V for line voltages between 90 V and
132 V, or that the selector is set to 240 V for line voltages between 198 V and 264 V.

Warning
To avoid electrical shock hazard disconnect line power before opening the case or
fuse compartment.
To change the line voltage:
1. Disconnect line power.
2. Using the blade of a suitable flat screwdriver, pry up the tab at the base of the
line fuse compartment by inserting the blade in the center slot under the tab.
The compartment cover will pop part way out.
3. Remove the compartment cover.
4. Remove the line voltage selector assembly by gripping the line voltage
indicator tab with pliers and pulling it straight out of the compartment.
5. Rotate the line voltage selector assembly to the desired voltage and reinsert.
6. Verify you are using the appropriate fuse for the selected line voltage (see table
10 above), and reinstall the fuse compartment by pushing it in until the tab
locks in place.

78
12. Specifications

12.1 General Specifications

Warm up time Twice the time since last warmed up, to a maximum of 30 minutes.
Settling time Less than 5 seconds for all functions and ranges except as noted.
Standard interfaces RS-232
IEEE-488 (GPIB)
Temperature performance Operating 0 °C to 50 °C
Calibration (tcal) 18 °C to 28 °C
Storage -20 °C to 70 °C
Electromagnetic compatibility CE: Conforms to EN61326
Temperature coefficient Temperature coefficient for temperatures outside tcal ±5 °C is 10% of
the 90 day specification (or 1 year if applicable) per °C
Relative humidity Operating <80% to 30 °C
<70% to 40 °C
<40% to 50 °C
Storage <95 % noncondensing
Altitude Operating 3,050 m (10,000 ft) maximumNonoperating 12,200 m
(40,000 ft) maximum
Safety EN 61010 Second, ANSI/ISA-S82.01-1994,CAN/CSA-C22.2 No.
1010.1-92, NRTL
Analog low isolation 20 V
Line power Line Voltage (selectable) 100V/120V or 220V/240V
Line Frequency 47 to 63 Hz
Line Voltage Variation ±10 % about setting
Power consumption 15 VA maximum
Dimensions Height 13.3 cm (5.25 in) plus 2.9 cm (1.15 in) for extended feet
Width standard rack width (19 inch)
Depth 30.0 cm (11.81 in) overall
Weight (without options) 4 kg (9 lb)

79
 12.2 DC Voltage Specifications, Output
Absolute Uncertainty,
tcal ±5 °C
± (ppm of output +µV) Stability
24 hours, ±1 °C Maximum
Ranges1 90 days 1 year ± (ppm of output +µV) Resolution Burden2
0 to 100.000 mV 25 3 30 3 5 ppm +2 1 µV 10 mA
0 to 1.00000 V 25 10 30 10 4 ppm + 10 10 µV 10 mA
0 to 10.0000 V 25 100 30 100 4 ppm + 100 100 µV 10 mA
0 to 100.000 V 25 1 mV 30 1 mV 5 ppm + 1 mV 1 mV 1 mA
TC Output and Input
-10 to 75.000 mV 25 3 mV 30 3 µV 5 ppm + 2 µV 1 µV 10 Ω
1. All outputs are positive only.
2. Remote sensing is not provided. Output resistance is < 1Ω

Noise
Bandwidth 0.1 to 10 Hz p-p Bandwidth
Ranges ± (ppm of output +µV) 10 Hz to 10 kHz rms µV
0 to 100.000 mV 1 µV 6 µV
0 to 1.00000 V 10 µV 60 µV
0 to 10.0000 V 100 µV 600 µV
0 to 100.000 V 10 ppm+1 mV 20 mV

12.3 DC Voltage Specifications, Isolated Input

Absolute Uncertainty,
Ranges tcal ±5 °C, ± (ppm of reading + mV) Resolution
0 to 10.0000 V 50 0.2 100 µV
0 to 100.000 V 50 2.0 1 mV

12.4 DC Current Specifications, Output

Absolute Uncertainty,
tcal ±5 °C ± (ppm of output +µA) Maximum Maximum
Compliance Inductive
Ranges1 90 days 1 year Resolution Voltage Load
0 to 100.000 mA 40 1 50 1 1 µA 12 V 100 mH
1. All outputs are positive only.

80
 Noise
Bandwidth Bandwidth
Ranges 0.1 to 10 Hz p-p 10 Hz to 10 kHz rms µV
0 to 100.000 mA 2000 nA 20 µA

12.5 DC Current Specifications, Isolated Input

Absolute Uncertainty,
Ranges tcal ±5 °C, ± (ppm of reading + mV) Resolution
0 to 50.0000 mA 100 1 0.1 µA
1. Loop power: 24V ±10%
2. HART resistor: 250Ω ±3%
3. Maximum rated loop current: 24mA

12.6 Resistance Specifications, Output

Absolute Uncertainty,
tcal ±5 °C, ± ohms
Ranges1 90 days 1 year Resolution Nominal Current1
5 to 400.000 Ω 0.012 0.015 0.001 Ω 1 to 3 mA
5 to 4.00000 kΩ 0.25 0.3 0.01 Ω 100 µA to 1 mA
1. Continuously variable from 0 to 4 kΩ.
2. For currents lower than shown, the specification becomes:
New Spec. = Stated Spec. x Imin / Iactual.
For example, a 500 µA stimulus measuring 100 Ω has a specification of:
0.015 Ω x 1 mA / 500 µA = 0.03 Ω.

12.7 Resistance Specifications, Input

Absolute Uncertainty,
tcal ±5 °C ± (ppm of output +Ω)
Ranges 90 days 1 year Resolution Stimulus Current
5 to 400.000 Ω 20 + 0.0035 20 + 0.004 0.001 Ω 1 mA
5 to 4.00000 kΩ 20 + 0.0035 20 + 0.004 0.01 Ω 0.1 mA

81
 12.8 Thermocouple Specification, Output and Input
Absolute Uncertainty,
tcal ±5 °C, ±(°C)1
Range (° C) Output/Input
TC Type Minimum Maximum 90 days 1 year
B 600 °C 800 °C 0.42 °C 0.46 °C
800 °C 1000 °C 0.39 °C 0.39 °C
1000 °C 1550 °C 0.40 °C 0.40 °C
1550 °C 1820 °C 0.44 °C 0.45 °C
C 0 °C 150 °C 0.25 °C 0.30 °C
150 °C 650 °C 0.21 °C 0.26 °C
650 °C 1000 °C 0.23 °C 0.31 °C
1000 °C 1800 °C 0.38 °C 0.50 °C
1800 °C 2316 °C 0.63 °C 0.84 °C
E -250 °C -100 °C 0.38 °C 0.50 °C
-100 °C -25 °C 0.16 °C 0.18 °C
-25 °C 350 °C 0.14 °C 0.15 °C
350 °C 650 °C 0.14 °C 0.16 °C
650 °C 1000 °C 0.16 °C 0.21 °C
J -210 °C -100 °C 0.20 °C 0.27 °C
-100 °C -30 °C 0.18 °C 0.20 °C
-30 °C 150 °C 0.14 °C 0.16 °C
150 °C 760 °C 0.14 °C 0.17 °C
760 °C 1200 °C 0.18 °C 0.23 °C
K -200 °C -100 °C 0.25 °C 0.33 °C
-100 °C -25 °C 0.19 °C 0.22 °C
-25 °C 120 °C 0.14 °C 0.16 °C
120 °C 1000 °C 0.19 °C 0.26 °C
1000 °C 1372 °C 0.30 °C 0.40 °C
L -200 °C -100 °C 0.37 °C 0.37 °C
-100 °C 800 °C 0.26 °C 0.26 °C
800 °C 900 °C 0.17 °C 0.17 °C
N -200 °C -100 °C 0.33 °C 0.40 °C
-100 °C -25 °C 0.20 °C 0.24 °C
-25 °C 120 °C 0.16 °C 0.19 °C
120 °C 410 °C 0.14 °C 0.18 °C
410 °C 1300 °C 0.21 °C 0.27 °C
1. Does not include thermocouple wire error.

82
Thermocouple Specification, Output and Input (continued)
Absolute Uncertainty,
tcal ±5 °C, ±(°C)1
Range (° C) Output/Input
TC Type Minimum Maximum 90 days 1 year
R 0 °C 250 °C 0.58 °C 0.58 °C
250 °C 400 °C 0.34 °C 0.35 °C
400 °C 1000 °C 0.31 °C 0.33 °C
1000 °C 1750 °C 0.30 °C 0.40 °C
S 0 °C 250 °C 0.56 °C 0.56 °C
250 °C 1000 °C 0.36 °C 0.36 °C
1000 °C 1400 °C 0.30 °C 0.37 °C
1400 °C 1750 °C 0.35 °C 0.46 °C
T -250 °C -150 °C 0.51 °C 0.63 °C
-150 °C 0 °C 0.18 °C 0.24 °C
0 °C 120 °C 0.13 °C 0.16 °C
120 °C 400 °C 0.12 °C 0.14 °C
U -200 °C 0 °C 0.56 °C 0.56 °C
0 °C 600 °C 0.27 °C 0.27 °C
XK -200 °C -100 °C 0.22 °C 0.22 °C
-100 °C 300 °C 0.12 °C 0.13 °C
300 °C 800 °C 0.19 °C 0.20 °C
BP 0 °C 200 °C 0.42 °C 0.42 °C
200 °C 600 °C 0.32 °C 0.32 °C
600 °C 800 °C 0.39 °C 0.40 °C
800 °C 1600 °C 0.45 °C 0.46 °C
1600 °C 2000 °C 0.57 °C 0.58 °C
2000 °C 2500 °C 0.67 °C 0.80 °C
1. Does not include thermocouple wire error.

83
 12.9 RTD and Thermistor Specification, Output
Absolute Uncertainty,
tcal ±5 °C, ±(°C)1
Range (° C) Output/Input
RTD Type Minimum Maximum 90 days 1 year
Pt 385, 100 Ω -200 °C -80 °C 0.03 °C 0.04 °C
-80 °C 0 °C 0.04 °C 0.05 °C
0 °C 100 °C 0.04 °C 0.05 °C
100 °C 300 °C 0.03 °C 0.04 °C
300 °C 400 °C 0.04 °C 0.04 °C
400 °C 630 °C 0.04 °C 0.05 °C
630 °C 800 °C 0.04 °C 0.05 °C
Pt 3926, 100 Ω -200 °C -80 °C 0.03 °C 0.04 °C
-80 °C 0 °C 0.03 °C 0.04 °C
0 °C 100 °C 0.03 °C 0.04 °C
100 °C 300 °C 0.03 °C 0.04 °C
300 °C 400 °C 0.03 °C 0.04 °C
400 °C 630 °C 0.04 °C 0.05 °C
Pt 3916, 100 Ω -200 °C -190 °C 0.03 °C 0.03 °C
-190 °C -80 °C 0.03 °C 0.04 °C
-80 °C 0 °C 0.03 °C 0.04 °C
0 °C 100 °C 0.03 °C 0.04 °C
100 °C 260 °C 0.03 °C 0.04 °C
260 °C 300 °C 0.03 °C 0.04 °C
300 °C 400 °C 0.03 °C 0.04 °C
400 °C 600 °C 0.04 °C 0.05 °C
600 °C 630 °C 0.04 °C 0.05 °C
Pt 385, 200 Ω -200 °C -80 °C 0.31 °C 0.38 °C
-80 °C 0 °C 0.32 °C 0.38 °C
0 °C 100 °C 0.33 °C 0.39 °C
100 °C 260 °C 0.33 °C 0.39 °C
260 °C 300 °C 0.36 °C 0.43 °C
300 °C 400 °C 0.36 °C 0.43 °C
400 °C 600 °C 0.42 °C 0.50 °C
600 °C 630 °C 0.42 °C 0.50 °C
Pt 385, 500 Ω -200 °C -80 °C 0.13 °C 0.15 °C
-80 °C 0 °C 0.13 °C 0.15 °C
0 °C 100 °C 0.13 °C 0.16 °C
100 °C 260 °C 0.14 °C 0.17 °C
260 °C 300 °C 0.14 °C 0.17 °C
300 °C 400 °C 0.15 °C 0.18 °C
400 °C 600 °C 0.16 °C 0.19 °C
600 °C 630 °C 0.16 °C 0.19 °C
1. 2-wire output

84
RTD and Thermistor Specification, Output (continued)
Absolute Uncertainty,
tcal ±5 °C, ±(°C)1
Range (° C) Output/Input
RTD Type Minimum Maximum 90 days 1 year
Pt 385, 1000 Ω -200 °C -80 °C 0.06 °C 0.07 °C
-80 °C 0 °C 0.06 °C 0.08 °C
0 °C 100 °C 0.07 °C 0.08 °C
100 °C 260 °C 0.07 °C 0.08 °C
260 °C 300 °C 0.07 °C 0.09 °C
300 °C 400 °C 0.07 °C 0.09 °C
400 °C 600 °C 0.08 °C 0.09 °C
600 °C 630 °C 0.08 °C 0.09 °C
Ni 120, 120 Ω -80 °C 0 °C 0.02 °C 0.02 °C
0 °C 100 °C 0.02 °C 0.02 °C
100 °C 260 °C 0.01 °C 0.02 °C
Cu 427, 10 Ω2 -100 °C 260 °C 0.30 °C 0.38 °C
YSI 400 15 °C 50 °C 0.005 °C 0.007 °C
1. 2-wire output
2. Based on MINCO Application Aid No. 18.

85
 12.10 RTD and Thermistor Specification, Input
Absolute Uncertainty,
tcal ±5 °C, ±(°C)1
Range (° C) Output/Input
RTD Type Minimum Maximum 90 days 1 year
Pt 385, 100 Ω -200 °C -80 °C 0.011 °C 0.012 °C
-80 °C 0 °C 0.018 °C 0.020 °C
0 °C 100 °C 0.018 °C 0.020 °C
100 °C 300 °C 0.027 °C 0.030 °C
300 °C 400 °C 0.031 °C 0.035 °C
400 °C 630 °C 0.042 °C 0.047 °C
630 °C 800 °C 0.050 °C 0.057 °C
Pt 3926, 100 Ω -200 °C -80 °C 0.011 °C 0.011 °C
-80 °C 0 °C 0.014 °C 0.015 °C
0 °C 100 °C 0.018 °C 0.019 °C
100 °C 300 °C 0.026 °C 0.029 °C
300 °C 400 °C 0.031 °C 0.034 °C
400 °C 630 °C 0.041 °C 0.046 °C
Pt 3916, 100 Ω -200 °C -190 °C 0.006 °C 0.006 °C
-190 °C -80 °C 0.011 °C 0.012 °C
-80 °C 0 °C 0.014 °C 0.015 °C
0 °C 100 °C 0.018 °C 0.019 °C
100 °C 260 °C 0.025 °C 0.028 °C
260 °C 300 °C 0.026 °C 0.029 °C
300 °C 400 °C 0.031 °C 0.034 °C
400 °C 600 °C 0.040 °C 0.045 °C
600 °C 630 °C 0.042 °C 0.047 °C
Pt 385, 200 Ω -200 °C -80 °C 0.008 °C 0.009 °C
-80 °C 0 °C 0.012 °C 0.013 °C
0 °C 100 °C 0.015 °C 0.017 °C
100 °C 260 °C 0.020 °C 0.022 °C
260 °C 300 °C 0.050 °C 0.053 °C
300 °C 400 °C 0.053 °C 0.057 °C
400 °C 600 °C 0.070 °C 0.075 °C
600 °C 630 °C 0.071 °C 0.076 °C
Pt 385, 500 Ω -200 °C -80 °C 0.007 °C 0.008 °C
-80 °C 0 °C 0.019 °C 0.020 °C
0 °C 100 °C 0.023 °C 0.025 °C
100 °C 260 °C 0.030 °C 0.033 °C
260 °C 300 °C 0.032 °C 0.035 °C
300 °C 400 °C 0.037 °C 0.041 °C
400 °C 600 °C 0.047 °C 0.052 °C
600 °C 630 °C 0.048 °C 0.053 °C
1. 4-wire mode. Uncertainties listed do not include probe uncertainties.

86
RTD and Thermistor Specification, Input (continued)
Absolute Uncertainty,
tcal ±5 °C, ±(°C)1
Range (° C) Output/Input
RTD Type Minimum Maximum 90 days 1 year
Pt 385, 1000 Ω -200 °C -80 °C 0.011 °C 0.012 °C
-80 °C 0 °C 0.014 °C 0.015 °C
0 °C 100 °C 0.019 °C 0.020 °C
100 °C 260 °C 0.025 °C 0.028 °C
260 °C 300 °C 0.027 °C 0.030 °C
300 °C 400 °C 0.030 °C 0.034 °C
400 °C 600 °C 0.041 °C 0.045 °C
600 °C 630 °C 0.042 °C 0.047 °C
Ni 120, 120 Ω -80 °C 0 °C 0.009 °C 0.010 °C
0 °C 100 °C 0.010 °C 0.011 °C
100 °C 260 °C 0.011 °C 0.012 °C
Cu 427, 10 Ω2 -100 °C 260 °C 0.067 °C 0.069 °C
YSI 400 15 °C 50 °C 0.005 °C 0.007 °C
SPRT -200 °C 660 °C 0.05 °C 0.06 °C
1. 4-wire mode. Uncertainties listed do not include probe uncertainties
2. Based on MINCO Application Aid No. 18.

12.11 Pressure Measurement Specifications

The 3001 can accept either the Fluke Corporation 700 series pressure modules, Mensor
Corporation 6100 series pressure modules, or BETA Calibrators Corporation BETA Port-P
pressure modules. Pressure modules plug directly into the front panel Lemo connector
with the 3001 firmware autodetecting the type and value of the module you are attaching.

87
 Range Accuracy and Resolution Units
Determined by the Determined by the
pressure module pressure module PSI(pounds per square inch)
in H2O 4ºC
(inches of water at 4 degrees Celsius)
in H2O 20°C
(inches of water at 20 degrees Celsius)
in H2O 60°F
(inches of water at 60 degrees Fahrenheit)
cm H2O 4ºC
(centimeters of water at 4 degrees Celsius)
cm H2O 20°C
(centimeters of water at 20 degrees Celsius)
mm H2O 4ºC
(millimeters of water at 4 degrees Celsius)
mm H2O 20°C
(millimeters of water at 20 degrees Celsius)
BAR
(bars)
mBAR
(millibars)
kPa
(kilopascals)
MPa
(megapascals)
in HG 0ºC
(inches of mercury at 0 degrees Celsius)
mm HG 0ºC
(millimeters of mercury at 0 degrees Celsius)
Kg/cm2
(kilograms per square centimeter)

13. Warranty
Martel Electronics Corporation warrants all products against material defects and
workmanship for a period of twelve (12) months after the date of shipment. Problems or
defects that arise from misuse or abuse of the instrument are not covered. If any product
is to be returned, a "Return Material Authorization" number must be obtained from our
Customer Service Department. This number must be indicated on the return package as
notice to our Receiving Department to accept the shipment. Any package not so marked
will not be accepted and will be returned to the shipper. Martel will not be responsible for
damage as a result of poor return packaging. Out of warranty repairs and recalibration
will be subject to specific charges. Under no circumstances will Martel Electronics be
liable for any device or circumstance beyond the value of the product.
88
89
 www.martelcorp.com
e-mail: sales@martelcorp.com
Fax: (603) 434-1653 Tel: (603) 434-1433
800-821-0023

Martel Electronics
PO Box 770
Londonderry, NH 03053

0219548 Rev A 6/07