3500/60 & /61 Temperature Monitors

Product Datasheet
Bently Nevada* Asset Condition Monitoring
Description
The 3500/60 & 61 modules provide six channels of
temperature monitoring and accept both Resistance
Temperature Detector (RTD) and Thermocouple (TC)
temperature inputs. The modules condition these inputs
and compare them against user-programmable alarm
setpoints. The 3500/60 and 3500/61 provide identical
functionality except that the 3500/61 provides recorder
outputs for each of its six channels while the 3500/60 does
not.

The user programs the modules to perform either RTD or

TC temperature measurements using the 3500 Rack
Configuration Software. Different I/O modules are
available in RTD/TC non-isolated or TC isolated versions.
The user can configure the RTD/TC non-isolated version to
accept either TC or RTD, or a mixture of TC and RTD inputs.
The TC isolated version provides 250 Vdc of channel-to-
channel isolation to protect against external interference.

When used in a Triple Modular Redundant (TMR)

configuration, temperature monitors must be installed
adjacent to each other in groups of three. When used in
this configuration, the system employs two types of voting
to ensure accurate operation and to avoid single-point
failures.

Part Number: 141540-01

Rev. G

Page 1 of 12
 Type T: -160 C to +400 C,
Specifications
(-256 F to +752 F).
Inputs RTDs
Signal
100 3-wire & 4-wire platinum
Accepts from 1 to 6 RTD or TC RTD (alpha = 0.00385):
transducer signals.
-200 C to +850 C
Input
Impedance (-328 F to +1562 F).

10 M for each lead input. With external barriers:

Power -50 C to +850 C

Consumption (-122 F to +1562 F).
3500/60: Nominal consumption of
7 watts.
100 3-wire & 4-wire platinum
3500/61: Nominal consumption of RTD (alpha = 0.00392):
9 watts.
-200 C to +700 C
Tranducers
(-328 F to +1292 F).
With external barriers:
TCs
-50 C to +260 C
Type E: -100 C to +1000 C,
(-122 F to + 1292 F).
(-148 F to +1832 F).
Note: When using any of the
120 3-wire & 4-wire nickel
isolated thermocouple I/O modules
RTD:
(-03 or -04 I/O ordering option)
with Type E thermocouples, the -80 C to +260 C
available full-scale range will be
(-112 F to +500 F).
reduced if the 3500 system is
operated in an ambient With external barriers:
temperature above +35C. The
-50 C to +260 C
reduced range will be -60C to
+1000C (-76F to +1832F). Rack (-122 F to + 500 F).
configuration software will allow
the user to configure a channel
down to -100C but the system will 10 3-wire & 4-wire copper
not function properly in this RTD:
scenario and therefore should not
-100 C to +260 C,
be configured to operate with
these settings. (-148 F to +500 F).
Type J: -18 C to +760 C, With external barriers:
(+0 F to +1400 F). -50 C to +260 C
(-122 F to +500 F).
Type K: -18 C to +1370 C, Note: Platinum RTD's with
0.00385 alphas are the worldwide
(+0 F to +2498 F).
industrial standard and are
recommended for all applications.

Part Number: 141540-01

Rev. G

Page 2 of 12
 0.3662 µA per bit ±0.15% error at
room temperature ±0.4% error
I/O Modules
over temperature range.
Isolated I/O Module
Signal Conditioning
System Isolation: 500Vdc
Note: Specified at +25 C (+77 F) unless otherwise
Channel to Channel Isolation: 250
noted.
Vdc Full-scale range for each channel is
Isolation is only required for fault set in the field via 3500
scenarios and these voltages will Configuration Software. No
not be present on the I/O module calibration is required.
inputs when a wiring or field fault RTDs and TCs
occurs. (except for 10
Outputs Copper RTDs)
Front Panel Resolution
LEDs
1 C or 1 F
Accuracy
OK LED
Indicates when the Temperature
Internal
Monitor is operating properly.
Termination
TX/RX LED Non-Isolated
Indicates then the Temperature Bulkhead Rack ±3 C at 25 C
Monitor is communicating with
(±5.4 F at 77 F).
other modules in the 3500 rack.
Standard Rack: ±3 C at 25 C
Bypass LED
(±5.4 F at 77 F).
Indicates when the Temperature
Monitor is in Bypass Mode. External
Termination
RTD Current
Non-Isolated:
Source Value
Bulkhead Rack: ±3 C at 25 C
925 15 A @ 25 C per
transducer (single supply for the 4- (±5.4 F at 77 F).
wire RTD and two supplies for the
Standard Rack: ±1 C at
3-wire).
25 C
Recorder
(±1.8 F at 77 F).
+4 to +20 mA. Values are
Internal
proportional to monitor full-scale.
Termination
Individual recorder values are
Isolated:
provided for each channel. Monitor
operation is unaffected by short Bulkhead Rack: ±2 C at 25 C
circuits on recorder outputs.
(±3.6 F at 77 F).
Voltage
Standard Rack: ±3 C at 25 C
Compliance
(current output) ±5.4 F at 77 F).
0 to +12 Vdc range across load. External
Load resistance is 0 to 600 . Termination
Isolated:
Resolution

Part Number: 141540-01

Rev. G

Page 3 of 12
 Bulkhead Rack: ±1 C at 25 C From 1 to 60 seconds in 1 second
intervals.
(±1.8 F at 77 F).
Danger
Standard Rack: ±1 C at 25 C
From 1 to 60 seconds in 0.5 second
(±1.8 F at 77 F).
intervals or can be set to the
10 Copper minimum alarm delay.
RTDs
Number of
Minimum time
actual
delay (mS)
Resolution channel(s)

1C or 1 F 1 225

Accuracy 2 300
±3 C at 25 C 3 375
(±5.4 F at 77 F). 4 450
Cold Junction 5 525
Compensation
6 600
Sensor (used
for TC
measurements)
Note: 225 ms alarm time delays will not be
available for all channels. As more channels
are used the alarm time delay increases.
Accuracy
The configuration software will indicate the
±1 C at 25 C minimum alarm time delay based on the
channel loading.
(±1.8 F at 77 F).
Alarms Proportional Values
Proportional values are
Alarm
temperature measurements used
Setpoints
to monitor the machine. The
The user can set Alert and Danger Temperature Monitors return
setpoints for the value measured temperature proportional values.
by the monitor using software
configuration. Alarms are Environmental Limits
adjustable from 0 to 100% of full- Operating
scale for each measured value. The Temperature
exception is when the full-scale
-30 C to +65 C (-22 F to +150 F)
range exceeds the range of the
when used with Internal/External
sensor. In this case, the range of
Termination I/O Modules
the sensor will limit the setpoint.
Accuracy of alarms are to within 0 C to +65 C (32 F to +150 F)
0.13% of the desired value. The when used with Internal Barrier I/O
Temperature Monitors have both Modules (Internal Termination).
under and over alarm setpoints.
Storage
Alarm Time Temperature
Delays
-40 C to +85 C (-40 F to +185
The user can program alarm delays F).
using software as follows:
Alert

Part Number: 141540-01

Rev. G

Page 4 of 12
 Class I, Zone 2, AEx nC IIC T4 Gc
Compliance and Certifications
Class I, Division 2, Groups A, B, C,
EMC and D
European Community Directives:
T4 @ -20 C ≤ Ta ≤ +65 C
EMC Directive 2014/35/EU
(-4 F ≤ Ta ≤ +149 F)
Standards: per control drawing 149243

EN 61000-6-2 Immunity for

Industrial Environments ATEX/IECEx
Approval
EN 61000-6-4 Emissions for Option (02)
Industrial Environments
For Selected Ordering Options
with ATEX/IECEx agency
Electrical Safety approvals:
European Community Directives: For ATEX/IECEx agency approval
ordering options with internal
LV Directive 2014/35/EU
barriers:
Standards: II 3 (1) G

EN 61010-1 Ex nA nC ic [ia Ga] IIC T4 Gc

T4 @ Ta = -20C≤ Ta ≤ +65 C
(-4F to +149F)
per control drawing 138547
Hazardous Area Approvals For ATEX/IECEx agency approval
For the detailed listing of country and product specific ordering options without internal
approvals, refer to the Approvals Quick Reference Guide, barriers:
document 108M1756, at www.GEmeasurement.com. II 3 G
North American Ex nA nC ic IIC T4 Gc
Approval T4 @ -20C ≤ Ta ≤ +65C
Option (01)
(-4F ≤ Ta ≤ +149F)
When used with I/O module ordering options
with internal barriers:
Ex nC [ia] IIC T4 Gc Physical
Class I, Zone 2, AEx nC [ia] IIC T4 Gc Monitor Module
Class I, Division 1, Groups A, B, C,
and D
Dimensions
T4 @ Ta = -20 C ≤ Ta ≤ +65 C (Height x Width
x Depth)
(-4 F ≤ Ta ≤ +149 F)
241.3 mm x 24.4 mm x 241.8 mm
per control drawing 138547
(9.50 in x 0.96 in x 9.52 in).
When used with I/O module ordering options
without internal barriers: Weight
Ex nC [L] IIC T4 Gc 0.91 kg (2.0 lbs.).

Part Number: 141540-01

Rev. G

Page 5 of 12
I/O Modules Termination Blocks and Cables
must be ordered separately.
Dimensions
(Height x Width Internal Barrier
x Depth) I/O Module
241.3 mm x 24.4 mm x 99.1 mm Consult the 3500 Internal Barrier
specification sheet (part number
(9.50 in x 0.96 in x 3.90 in).
141495-01) if the Internal Barrier
Weight Option is selected.
0.45 kg (1.0 lbs.).

Internal Barrier
I/O Module
Dimensions
(Height x Width
x Depth)
241.3 mm x 24.4 mm x 163.1 mm
(9.50 in x 0.96 in x 6.42 in).
Weight
0.46 kg (1.01 lbs.).

Rack Space Requirements

Monitor Module
1 full-height front slot.
I/O Modules
1 full-height rear slot.

Ordering Considerations
General
If the 3500/60 or 3500/61 is added
to an existing 3500 System the
following firmware and software
versions (or later) are required:
3500/20 Module Firmware –
Revision G
3500/01 Software – Version 2.00
3500/02 Software – Version 2.00
3500/03 Software – Version 1.10
Note: External Termination Blocks cannot
be used with Internal Termination I/O
modules.

When ordering I/O Modules with

External Terminations the External

Part Number: 141540-01

Rev. G

Page 6 of 12
Ordering Information External Termination Blocks
133908-01
For the detailed listing of country and product specific
approvals, refer to the Approvals Quick Reference Guide, RTD/TC Non-Isolated External
document 108M1756, at www.GEmeasurement.com. Termination Block (Terminal Strip
connectors).
No Recorder Outputs 133916-01
3500/60-AXX-BXX RTD/TC Non-Isolated External
A: I/O Module Type Termination Block (Euro Style
01 RTD/TC Non-isolated I/O connectors).
Module Internal 133924-01
Terminations
02 RTD/TC Non-isolated I/O TC Isolated External Termination
Module External Block (Terminal Strip connectors).
Terminations 133932-01
03 TC Isolated I/O Module
Internal Terminations TC Isolated External Termination
04 TC Isolated I/O Module Block (Euro Style connectors).
External Terminations 133892-01
05 RTD/TC Non-isolated I/O
Module with Internal 3300/61 Recorder Output External
Barriers Termination Block (Terminal Strip
connectors).
B: Agency Approval Option 133900-01
00 None
01 CSA/NRTL/C (Class 1, Div 2) 3300/61 Recorder Output External
02 ATEX/ IECEx/ CSA (Class 1, Termination Block (Euro Style
Zone 2) connectors).

Recorder Outputs
Cables
3500/61-AXX-BXX 3500/60 and 3500/61 Transducer (XDCR)
A: I/O Module Type Signal to External Termination (ET) Block
01 RTD/TC Non-isolated I/O Cable
Module Internal
Terminations
134544-AXXXX-BXX
02 RTD/TC Non-isolated I/O A: Cable Length
Module External 0005 5 feet (1.5 metres)
Terminations 0007 7 feet (2.1 metres)
03 TC Isolated I/O Module 0010 10 feet (3.0 metres)
Internal Terminations 0025 25 feet (7.5 metres)
04 TC Isolated I/O Module 0050 50 feet (15 metres)
External Terminations 0100 100 feet (30.5 metres)
05 RTD/TC Non-isolated I/O B: Assembly Instructions
Module with Internal 01 Not assembled
Barriers 02 Assembled

B: Agency Approval Option 3500/61 Recorder Output to External

00 None
Termination (ET) Block Cable
01 CSA/NRTL/C (Class 1, Div 2)
02 ATEX/ IECEx/ CSA (Class 1, 134543- AXX – BXX
Zone 2)
A: Cable Length

Part Number: 141540-01

Rev. G

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 0 0 0 5 5 feet (1.5 metres) 3500/60-Specific
0 0 0 7 7 feet (2.1 metres)
163179-01
0 0 1 0 10 feet (3.0 metres)
0 0 2 5 25 feet (7.5 metres) 3500/60 Temperature Monitor
0 0 5 0 50 feet (15 metres) (without recorders)
0 1 0 0 100 feet (30.5 metres)
133827-01
B: Assembly Instructions
01 Not assembled 3500/60 RTD/TC Non-Isolated I/O
02 Assembled Module External Terminations.
Note: Recorder cables are not
133835-01
used with /60 or /62
monitors 3500/60 TC Isolated I/O Module
Internal Terminations.
Spares
133843-01
Shared components for /60 and /61 3500/60 TC Isolated I/O Module
133908-01 External Terminations.
RTD/TC Non-Isolated External 136711-01
Termination Block (Terminal Strip
3500/60 RTD/TC I/O Module with
connectors).
Internal Barriers and Internal
133916-01 Terminations. (Not-Isolated)
RTD/TC Non-Isolated External
Termination Block (Euro Style 3500/61-Specific
connectors). 163179-02
133924-01 3500/61 Temperature Monitor
(with recorders)
TC Isolated External Termination
Block (Terminal Strip connectors). 133819-02
133932-01 3500/61 RTD/TC Non-Isolated I/O
Module Internal Terminations.
TC Isolated External Termination
Block (Euro Style connectors). 133827-02
00580442 3500/61 RTD/TC Non-Isolated I/O
Module External Terminations.
Connector Header, Internal
Termination, 9-position, Green. 133835-02
00580443 3500/61 TC Isolated I/O Module
Internal Terminations.
Connector Header, Internal
Termination, 12-position, Green. 133843-02
00502133 3500/61 TC Isolated I/O Module
External Terminations.
Connector Header, Internal
Termination, 12-position, Blue. 133892-01
00580444 3500/61 Recorder Output External
Termination Block (Terminal Strip
Connector Header, Internal
connectors).
Termination, 15-position, Green.
133900-01
134542-01
3500/61 Recorder Output External
3500/60 & 3500/61 Manual.
Termination Block (Euro Style
connectors).

Part Number: 141540-01

Rev. G

Page 8 of 12
136711-02
3500/61 RTD/TC I/O Module with Internal
Barriers and Internal Terminations. (Not-
Isolated)

Part Number: 141540-01

Rev. G

Page 9 of 12
Graphs and Figures…

1) Status LEDs
2) 3500/60 Main Module Front View
3) ISO TC Temp I/O Module (Internal Terminations)
4) RTD/TC Temp I/O Module (Internal Terminations)
5) ISO TC Temp I/O Module (External Terminations)
6) RTD/TC Temp I/O Module (External Terminations)
(No Recorder Outputs)

Figure 1: Front and Rear Views of the 3500/60 Temperature Monitor

Part Number: 141540-01

Rev. G

Page 10 of 12
 1) Status LEDs
2) 3500/61 Main Module Front View
3) ISO TC Temp I/O Module (Internal Terminations)
4) RTD/TC Temp I/O Module (Internal Terminations)
5) ISO TC Temp I/O Module (External Terminations)
6) RTD/TC Temp I/O Module (External Terminations)
(Recorder Outputs)

Figure 2: Front and Rear Views of the 3500/61 Temperature Monitor

Part Number: 141540-01

Rev. G

Page 11 of 12
 Copyright 1999-2017 Baker Hughes, a GE company, LLC (“BHGE”) All rights reserved.
* Denotes a trademark of Bently Nevada, LLC, a wholly owned subsidiary of Baker Hughes, a GE company.
All product and company names are trademarks of their respective holders.
Use of the trademarks does not imply any affiliation with or endorsement by the respective owners.
The information contained in this document is subject to change without prior notice.
1631 Bently Parkway South Minden, Nevada USA 89423
Phone: 1-775.782.3611 www.GEmeasurement.com

Part Number: 141540-01

Rev. G

Page 12 of 12