Differential Pressure Meter

Media 6 with LCD

Media 6 with LED

LED

Media 6 with LCD and attached valve block (left), Media 6 with LED (right)

Mounting and
Operating Instructions

EB 9527-1 EN
Firmware A 2.11 (LCD), B 2.11 (LED)
Edition November 2005
 Contents

Contents
1 Design and principle of operation . . . . . . . . . . . . . . . . . . . 6
1.1 Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.1 Instrument set-up . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.1.1 Media 6 Indicating Unit . . . . . . . . . . . . . . . . . . . . . . . . 10
2.1.2 Valve block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.1.3 Shut-off and equalizing valves . . . . . . . . . . . . . . . . . . . . . 10
2.2 Accessories for connections . . . . . . . . . . . . . . . . . . . . . . 11
3 Electrical connection . . . . . . . . . . . . . . . . . . . . . . . . . 12
4 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.1 Display and operating elements . . . . . . . . . . . . . . . . . . . . 16
4.1.1 Changing over display mode for Media 6 with LCD. . . . . . . . . . . 16
5 Start-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
6 Settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
6.1 Write protection. . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
6.2 Selecting the gas type . . . . . . . . . . . . . . . . . . . . . . . . . 17
6.3 Checking the zero point . . . . . . . . . . . . . . . . . . . . . . . . 18
6.4 Checking the measuring range (span) . . . . . . . . . . . . . . . . . 20
6.5 Setting limit switches. . . . . . . . . . . . . . . . . . . . . . . . . . 22
6.5.1 Max. limit for filling limit during operation . . . . . . . . . . . . . . . 22
6.5.2 Alarms A1 and A2 . . . . . . . . . . . . . . . . . . . . . . . . . . 22
6.6 Ammeter function . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
7 Memory pen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
7.1 Data transfer using memory pen . . . . . . . . . . . . . . . . . . . . 25
7.2 Connection to the PC . . . . . . . . . . . . . . . . . . . . . . . . . 27
8 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
9 Servicing explosion-protected versions . . . . . . . . . . . . . . . . 29
10 Dimensions in mm . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Test certificate . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

2 EB 9527-1 EN
 Safety instructions

Safety instructions
4 Assembly, commissioning and operation of the device may only be
performed by trained and experienced personnel familiar with this
product.
According to these mounting and operating instructions, trained
personnel is referred to persons who are able to judge the work they are
assigned to and recognize possible dangers due to their specialized
training, their knowledge and experience as well as their knowledge of the
relevant standards.
4 Explosion-protected versions of this device may only be operated by
personnel who have undergone special training or instructions or who are
authorized to work on explosion-protected devices in hazardous areas.
See section 9 for more details.
4 Any hazards which could be caused by the process medium and the
operating pressure in the instrument are to be prevented by means of
appropriate measures.
Make sure that the instrument is only used where temperatures and
operating pressure do not exceed the sizing data specified in the order.
The Media 6 Differential Pressure Meter is not certified for measuring
flammable gases or liquids in Zone 0 areas.
4 Proper shipping and appropriate storage are assumed.

Note! Devices with the CE mark meet the requirements specified in the
Directive 94/9/EC and the Directive 89/336/EEC.
The Declaration of Conformity is available on request.

EB 9527-1 EN 3
 Firmware modification

Table 1 · Device firmware versions

Modifications in device firmware compared to the previous version
Previous version New version
A 2.03/B 2.03 A 2.10/B 2.10
The limit switches A1 and A2 are configured over software as minimum
Limit switches and maximum alarms. They can be adjusted separately over the keys on
the device.
Filling limit during The filling limit during operation UCW can be set over the keys on the
operation device independently of the limit switches.
A 2.10/B 2.10 A 2.11/B 2.11
Error code The current output of the Media 6 device is switched to ≤ 3.6 mA.

4 EB 9527-1 EN
 Firmware modification

Modifications in device firmware compared to the previous version

Previous version New version

EB 9527-1 EN 5
 Design and principle of operation

1 Design and principle of The user-specific data are saved in the

operation EEPROM (4). Data can also be saved in this
manner and kept until they are overwritten
The Media 6 Differential Pressure Meters mea- again. The operating data of Media 6 can
sure and indicate the differential pressure or also be uploaded to the memory pen and
measured variables derived from the differen- downloaded to the device on site.
tial pressure. They are designed for gases and
liquids, for example, for liquid level measure- The memory pen can be configured on a PC
ment in pressurized vessels. with the corresponding TROVIS-VIEW soft-
ware, using the operating data, e.g. type of
The measuring device consists of a dp cell and gas, gas density, tank design and position of
an indicating unit. The cell has a measuring the limit switches. The data are used to convert
diaphragm and range springs designed for a the differential pressure into a value propor-
certain measuring span, and the indicating tional to the tank contents then used to display
unit is equipped with either an LCD (liquid and issue the direct current signal from 4 to
crystal display) or an LED (light-emitting di- 20 mA.
ode) to indicate important operating condi-
tions. Four types of gas and various write protection
functions for stored data can be selected using
The differential pressure Δp = p1 – p2 acts on the DIL switches (6).
the measuring diaphragm (1.1) which is coun-
terbalanced by the range springs (1.2). The Several operating functions (zero and span
movement made by the measuring diaphragm adjustment, filling limit during operation, limit
and lever (1.3) which is proportional to the dif- switches and test function settings, etc.) as well
ferential pressure is led by the elastic disc (1.4) as operating states (load/save operating val-
out of the pressure chamber and converted by ues) can be set using three keys (5).
the displacement sensor (2) into an electric
signal.
This signal is compared with the data stored in
the EEPROM (4) and processed in the micro-
processor (3) which controls both the display
(7, LCD or LED) and the D/A converter (9) for
the output signal which is issued at connector
A as a two-wire 4 to 20 mA transmitter signal.
The SERIAL INTERFACE (10) enables the de-
vice to be configured using a special memory
pen or a connecting cable and a PC which has
SAMSON's TROVIS-VIEW Configuration and
Operator Interface installed.

6 EB 9527-1 EN
 Design and principle of operation

Indicating unit with LCD or LED

Connection A
UB = 12 V to 36 V DC
IA = 4 to 20 mA

Min./max. alarm A1

Connection B

Min./max. alarm A2

SERIAL INTERFACE
µP
EEPROM

1 Differential pressure cell

1.1 Measuring diaphragm
1.2 Range springs
dp cell
1.3 Lever
1.4 Elastic disc
1.5 Diaphragm axis
2 Displacement sensor
3 Microprocessor
4 Memory
Valve block 5 Keys
with
pressure 6 DIL switch
gauge 7 Indicating unit with LCD
or LED
8 Limit switch
9 D/A converter
10 SERIAL INTERFACE

Fig. 1 · Functional diagram

EB 9527-1 EN 7
 Technical data

1.1 Technical data

Table 2 · Technical data
Differential pressure meter

0 to 0 to 0 to 0 to 0 to 0 to 0 to 0 to 0 to
Measuring range mbar
100 160 250 400 600 10001) 16001) 25001) 36001)

Adjustable measuring span in mbar

from ≤ 250 ≤ 400 ≤ 600 ≤ 1000 ≤ 1600 ≤ 2500 ≤ 3600

Class ±1.0%
to ≥ 125 ≥ 100 ≥ 150 ≥ 1250 ≥ 1400 ≥ 1500 ≥ 1500

from ≤100 <160 <125 <100 <150 <250

Class ±1.6%
to ≥ 60 ≥ 60 ≥ 50 ≥ 80 ≥ 120 ≥ 200

from <60 <60

Class ±2.5%
to ≥ 35 2) ≥ 32

Nominal pressure PN 50, overloadable on one side up to 50 bar

Display LCD Ø 90 or LED Ø 3

Performance Output and reading linear to the tank contents

Deviation from terminal-based

< ±1.0 % or < ±2.5 % (including hysteresis) depending on the span selected
linearity

Sensitivity < 0.25 % or < ±0.5 % depending on the span selected

Static pressure effect < 0.03 % / 1 bar

Influence of ambient tempera-

ture in the range between
–20 to +70 °C
On zero point < ±0.2 %/10 K
On span < ±0.2 %/10 K

Two software contacts A1 and A2, configurable as minimum or maximum alarms

Limit switches
according to EN 60947-5-6

Control circuit, Rating according to connected switching amplifier according to

adjustable in 1 % steps EN 60947-5-6, e.g. KFA6- SR2- Ex2.W or KFA-SR2- Ex1.W

Hysteresis 1 % based on maximum tank capacity (MCN)

Range of inversion, approx. < 0.6 %

Weight Approx. 3 kg without valve block · Approx. 5 kg with valve block

1) A class accuracy of 0.6 % can be expected for measuring ranges 1000, 1600, 2500 and 3600 mbar with spans
≤ 100 % to ≥ 50 % of the nominal range.
2) The class accuracy of Class 2.5 may not be reached in cases where the span does not fall within this specified span.

Note!
All pressures stated as gauge pressures · All errors and deviations stated in % of the adjusted span.
The Media 6 Differential Pressure Meter is not certified for measuring flammable gases or liquids in Zone 0 areas.

8 EB 9527-1 EN
 Technical data

Version 5006-0 5006-1

Output 4 to 20 mA

UB – 12 V
Permissible load RB in ohm RB =
0.020 A

Intrinsically safe (Media 6 with LCD

Output current circuit – and LED) · Refer to
PTB 00 ATEX 2074 in appendix

Supply voltage UB 12 to 28 V DC only in combination

12 to 36 V
two-wire transmitter with an intrinsically safe circuit

T6 max. +60 °C
Permissible ambient temperature –40 to +70 °C
T5 max. +70 °C

Permissible storage temperature –40 to +80 °C

Degree of protection IP 65 according to DIN VDE 0470 and EN 60529

Materials

Version Standard version

Housing CW617N (brass) or CrNi steel

Measuring diaphragm and seals ECO (others on request)

Range springs

Diaphragm plates and functioning

CrNi steel
parts

Lever

Indicating unit Polycarbonate, polyamide

Note!
Devices intended for oxygen service are labeled
“Oxygen! Keep free of oil and grease!"
These versions are cleaned and assembled by the manufacturer under special conditions.
Appropriate gloves need to be worn on replacing parts that come into contact with oxygen, e.g.
measuring springs.
When returning devices designed for oxygen service to the manufacturer for repair, the sender
assumes full responsibility that the handling of the devices to be repaired meets the require-
ments specified in VBG 62 or equivalent regulations until the devices are handed over to the
manufacturer. Otherwise, SAMSON AG will not accept any responsibility.

EB 9527-1 EN 9
 Installation

2 Installation 4 Clean the connections carefully prior to

connecting the measuring lines. Do not
clean the instrument using compressed air
or pressurized water.
4 Secure the instrument at the place of instal-
lation to a pipe, wall or mounting plate
free of vibration.
4 For attachment to vertical or horizontal
pipes, use a mounting component with
clamp. For wall mounting, use a mounting
component without clamp. See the dimen-
sional drawing on page 30 for mounting
in control panels.

Note!
We recommend installing one shut-off valve in
each measuring line and, additionally, an
equalizing valve, or a SAMSON valve block
as a compact assembly to shut off both mea-
Fig. 2 · Set-up for liquid level measurement. suring lines.
The example shows the standard set-up in a Additionally, the zero point can be checked at
cryogenic application. the indicating unit by bypassing the circuit.

2.1 Instrument set-up 2.1.2 Valve block

2.1.1 Media 6 Indicating Unit The three valves combined in a valve block
with test and pressure gauge connections
Make sure that the high-pressure line is con- (Fig. 3), which are flanged directly onto the
nected to the high-pressure connection and bottom of the dp cell, are available as
the low-pressure line to the low-pressure con- accessories.
nection.
2.1.3 Shut-off and equalizing valves
Note!
As an alternative to the SAMSON valve block,
Special fittings are required to connect mea-
both shut-off valves as well as the bypass
suring lines. In addition, depending on the in-
valve/equalizing valve can also be installed
strument set-up, connections left unused must
as shown in Fig. 3.1.
be fitted with plugs or vent plugs (see sec-
tion 2.2 on accessories for more details).

10 EB 9527-1 EN
 Installation

2.2 Accessories for connections dium (especially when measuring gases) must
be ordered separately.
Open product connections are protected
The screw fittings and SAMSON valve blocks
against contamination by NBR plugs.
are listed together with their order numbers in
Required screw fittings, sealing or vent plugs the Data Sheet T 9555 EN.
and screw joints with restrictions used to
dampen vibrations caused by the process me-

Liquid level measurement

Media 6
Flow rate
measurement
From the point of
measurement

Test connection Equalizing valve

(lead-sealable)

Bore hole for

sealing wire

To indicating unit

Shut-off valve (–) 1 Shut-off valve

Shut-off valve (+)
2 Equalizing valve
Pressure gauge connection
Connection for measuring lines

Fig. 3.1 · Shut-off valves and

equalizing valves, separate or
Fig. 3 · SAMSON valve block combined in a block (schematics)

EB 9527-1 EN 11
 Electrical connection

3 Electrical connection
4 As far as the electrical installation of the device is concerned, the relevant
national regulations governing the installation of electrical equipment and
the national accident prevention regulations of the country of destination
must be adhered to. In Germany, these are the VDE regulations and
accident prevention regulations of the employer's liability insurance.
4 For assembly and installation in hazardous areas, the following standards
apply: EN 60079-14: 1997 (VDE 0165 Part 1/8.98) "Electrical
apparatus for explosive gas areas" and EN 50281-1-2: (VDE 0165
Part 2) 11.99 "Electrical apparatus for use in the presence of combustible
dust."
4 For intrinsically safe electrical apparatus that are certified according to the
Directive 79/196/EEC, the data specified in the certificate of conformity
apply for connection of intrinsically safe circuits.
4 For intrinsically safe electrical apparatus that are certified according to the
Directive 94/9/EC, the data specified in the EC type examination
certificate apply for connection of intrinsically safe circuits.
4 Note: It is absolutely necessary to keep to the terminal plan specified in the
certificate. Reversal of the electrical connections may cause the explosion
protection to be ineffective!
Do not tamper with screws inside or on the case which have been sealed
with paint.

Note on the selection of cables and wires:

To run several intrinsically safe circuits in a multi-core cable, read paragraph 12 of
EN 60079-14 (VDE 0165/8.98). For generally used insulating materials, for example polyeth-
ylene, the radial thickness of the conductor insulation has to be at least 0.2 mm. The diameter of
a single wire in a flexible conductor shall not be smaller than 0.1 mm. The conductor ends are to
be protected from unlaying, e.g. by using wire end ferrules.

12 EB 9527-1 EN
 Electrical connection

Connector A Test connection

Two-wire connection for 4 to 20 mA signal, An ammeter can be connected to the test ter-
perm. load RB.= minals + and – for checking the output signal
UB – 12 V on calibration. The output signal of the
RB = in ohm
0.020 A two-wire circuit is not interrupted.
Make sure that there is a load of < 0.4 V DC at
the ammeter for the test connection.
The supply voltage is usually 24 V DC. It may
be between at least 12 and maximum
36 V DC while considering the supply lead's Caution!
resistance directly at the connecting terminals If the cable socket is removed from the connec-
of the connector. tor, the degree of protection IP 65 becomes in-
effective!
Connector B Protect the connector from moisture during in-
stallation work and transport by keeping the
Connection for two software limit switches in cable socket part screwed on and sealed!
type of protection "Intrinsic Safety" EEx ia IIC
for control circuits conforming with NAMUR to
switching amplifiers as per EN 60947-5-6.
Maximum values:
Ui = 20 V, Ii = 60 mA, Pi = 250 mW
Ci = 5.3 nF, Li = negligible

Connection A · Two-wire connection

Power supply unit for standardized 4 to 20 mA signal
Cable socket
Order no: 8831-0503
Network
Connector connections for cable
Ø 8 to 10 mm

Limit switches with switching amplifier Connection B · Software limit

Min./max. A1 switches
Cable socket
Order no.: 8831-0500

Min./max. A2

Fig. 4 · Terminal assignment of DIN 43650 connector, form A

EB 9527-1 EN 13
 Electrical connection

Table 3 · Summary of functions of both software limit switches A1 and A2

at connector B

Proximity switch Gas tapping/Tank filling Gas tapping

Tank filling (2 max. alarms)
for ... (1 min./1 max. alarm) (2 min. alarm)

Alarm contact A1 A2 A1 A2 A1 A2

Value falls below

High resistance Low resistance High resistance High resistance Low resistance Low resistance
limit

Value exceeds
Low resistance High resistance Low resistance Low resistance High resistance High resistance
limit

Both limit switches A1/A2 can be configured separately to function as maximum or minimum alarms.
Contact assumes low resistance
Switching signal “ON” · Function: Contact closed or output effectively conducting,
power consumption ≥ 3 mA
Contact assumes high resistance
Switching signal “OFF” · Function: Contact open or output effectively non-conducting,
power consumption ≤ 1 mA

14 EB 9527-1 EN
 Operation

4 Operation

Gas type and operating status

Tank capacity % Tank ID Factor Alarm A2
blinking

Alarm A1 UCW blinking

blinking

Tank capacity
MCN, SCN,
UCW,
differential
pressure and
error code
Interface Unit of quantity
tank capacity
and Δp

Open
equalizing Nom. perm.
valve capacity SCN

Tank ID

DIL switches Up key Down key Enter key Test connection

LED

Insertable label
for gas types and
measuring ranges

Note!
A quick guide is located behind the
label of the Media 6 with LED.

Fig. 5 · Indicating unit with LCD (top) and LED (bottom)

EB 9527-1 EN 15
 Operation

4.1 Display and operating MCN/R 100 % capacity assigned to

20 mA signal
elements
SCN Save capacity nominal
All the necessary information and measured geometric capacity up to overflow/
data stored in the instrument's memory are gauge pipe
shown on the display of Media 6 with LCD.
SCN/R 100 % capacity assigned to
Although the Media 6 with LED version does 20 mA signal
not have such a digital display, important op-
UCW Useable capacity work
erating conditions are indicated by the LED.
Δ P100 Maximum differential pressure
Three keys are used to operate the differential
pressure meter: PTANK Nominal tank pressure
Indicated value corresponds to the
Up key pressure assigned to the density
Down key (liquid) according to vapor pressure
diagram.
Enter key If the calculations for MCN and SCN
are based on density at 1 bar, then
and a DIL switch with four switches to select the
1 bar is shown for PTANK.
type of gas and write protection function.
X-TANK- e.g. tank ID as running text
16
ERROR Error message displayed
automatically when an error occurs
(see section 8 on troubleshooting)
4.1.1 Changing over display mode OFF Special signal on opening the
for Media 6 with LCD equalizing valve, I = 3.6 mA (refer
to section 4.1 of EB 9527-2 EN).
Press the key to change over from the stan-
dard display to seven other display modes.
After 8 seconds or after the message has fin-
ished running across the display, the display
returns automatically to the standard display.

O2 e.g. gas name and current tank

ΔP current differential pressure
MCN Max. capacity nominal
max. tank capacity

16 EB 9527-1 EN
 Start-up

5 Start-up 6 Settings
1. Open the equalizing valve.
2. Slowly open the high-pressure line.
6.1 Write protection
3. Close the equalizing valve or the bypass The instrument has two write protection func-
of the valve block. tions:
4. Open the low-pressure line. WRITE PROTECTION to prevent the operating
data from being changed unintentionally.
Note! SPAN PROTECTION as an additional write
Check the zero point at the dp cell, if neces- protection for the span setting.
sary, as described in section 6.3, and restart
The write protection at switch 4 of the DIL
the instrument.
switch must first be switched OFF before vari-
ous operating functions can be carried out
and switched ON again afterwards.

6.2 Selecting the gas type

The required gas type can be selected using
the positions of switches 1 and 2 according to
the table and diagram below.

Gas 1 1 OFF 2 OFF

Gas 2 1 ON 2 OFF

Gas 3 1 OFF 2 ON

Gas 4 1 ON 2 ON

ON

OFF
1 2 3 4
Write protection
Gas type Span protection

Fig. 6 · DIL switch with switches 1 to 4

EB 9527-1 EN 17
 Settings

Media 6 with LCD 6.3 Checking the zero point

The gas formula of the gas chosen, e.g. AR, On checking the zero point, the pressure must
CO2, O2, N2, etc. appears on the display. be equal in both measuring chambers at at-
4 Select the gas type according to the table mospheric pressure. Thas means the current
using the DIL switch. signal at connector A or at the TEST connec-
The display is not activated, just the selected tion must be 4 mA when the differential pres-
gas is shown! sure Δp = 0 mbar (see test arrangement in
Fig. 7.)
Press to confirm the new gas type. The dis-
play is reactivated.
Note!
When activating the gas column correction
(refer to section 4.2.2 in EB 9527-2 EN), it is
Media 6 with LED important to take into account that the gas col-
The four selectable gas types are listed down- umns in the measuring lines reduce the differ-
ward from 1 to 4 or specified with their desig- ential pressure as they have an opposing ef-
nation on the insertable label. fect on each other. At a pressure equilibrium
of Δp = 0 mbar, the meter readout is negative
Use the switches 1 and 2 of the DIL switch to for the tank capacity and the output signal in-
select the gas type, also refer to the table and dicates a value < 4 mA. In this case, readjust
Fig. 6. the zero point as described in following so that
The gas type selected is indicated by the num- the display indicates 0 % = 0000 when Δp =
ber of times the LED blinks. 0 mbar. The output signal changes, but indi-
cates a value < 4 mA in accordance with the
Gas 1 Pause - Blinks x1 - Pause etc. gas column correction data.
Gas 2 Pause - Blinks x2 - Pause etc.
Gas 3 Pause - Blinks x3 - Pause etc. Media 6 with LCD
Gas 4 Pause - Blinks x4 - Pause etc. At a differential pressure of Δp = 0 mbar, the
Press to confirm the new gas type. The LED display must indicate 0 % or 0000.
goes out. Correction when the tank is empty
4 Write protection: switch 4 to OFF
Press and hold down key. ZERO and
X,0X mbar appear on the display.
Current signal I shows the present mA
value.
Press key to adust the zero point.

18 EB 9527-1 EN
 Settings

Release key, 0 mbar appears on the 4 Write protection: switch 4 to OFF

display. Current signal I = 4 mA. Press and hold down key. ZERO and
X,X mbar appear on the display.
4 Activate the write protection: switch 4 to Current signal I indicates the present
ON.
mA value.
Correction when the tank is filled Press key to adjust the zero point.
If the differential pressure lines are equipped Release key, 0 mbar appears on the
with shut-off and equalizing valves, zero point display.
can be checked even when the plant is in oper- Current signal I = 4 mA corresponding to
ation. To achieve this, place the valve block or the liquid level at 0 mbar differential
equalizing valve in the test position to obtain pressure. (See note on gas column cor-
the same pressure in both measuring cham- rection on page 18.)
bers.
4 Activate write protection: switch 4 to ON.
1. Close the shut-off valve in the high-pres- 4 Return valve block or equalizing valve to
sure line. operating position:
2. Open the equalizing valve or bypass in 1. Open the shut-off valve in the low-pres-
the valve block. sure line.
3. Close the shut-off valve in the low-pres- 2. Close equalizing valve.
sure line. 3. Open the shut-off valve in the high-pres-
The valve block is in test position! sure line.

Caution! For devices used to measure oxygen, the test medium must be free of oil and
grease!
Ammeter
A
Supply unit

Power
Supply air reducing supply
station with oil filter
and pressure gauge
Use air free of oil or other
Test gases, e.g. N2
pressure

Precision regulator with pressure gauge Class 0.1

Fig. 7 · Test arrangement

EB 9527-1 EN 19
 Settings

Media 6 with LED 4 Activate the write protection: turn switch 4

to ON.
According to the test arrangement, a current
signal of 4 mA must be supplied at connector
A or at the TEST connection at a differential
6.4 Checking the measuring
pressure of Δp = 0 mbar. range (span)
Correction when the tank is filled A basic calibration with a linear characteristic
1. Close the shut-off valve in the high-pres- based on the upper range value of the dp cell
sure line. was performed at the factory (default setting).

2. Open the equalizing valve or bypass in The instrument adopts the tank characteristic
the valve block. based on the entered tank and gas data and
calculates values proportional to the tank ca-
3. Close the shut-off valve in the low-pres- pacity to indicate and issue the output signal
sure line. from 4 to 20 mA using the gas data for the gas
The valve block is in test position! selected.

4 Write protection: switch 4 to OFF. In exactly the same way, the differential pres-
sure meter calculates the maximum possible
Press and hold down key. LED starts to
blink rapidly. Current signal I indicates differential pressure Δp 100 in mbar for each
the present mA value. type of gas and the predetermined reference
height (total height or gauge pipe). The output
Press key to adjust the zero point. signal of 20 mA must correspond to Δp100.
Current signal I = 4 mA corresponding to Connect the differential pressure meter as
the liquid level at 0 mbar differential shown in Fig. 7 to check the measuring range.
pressure. For gas column correction, the
following applies: I < 4 mA.
Note!
(See also the note on gas column correc-
tion on page 18.) It is useful to activate the gas with the largest
density to adjust the span. The values for gases
The LED is lit continuously for approx. with smaller densities are also calibrated with
two seconds. this calibration procedure.
Release key. Important!
To calibrate the gas currently available, its in-
4 Return valve block or equalizing valve to dicated value must be at least 85 % of the ad-
operating position: justed upper range value of Δp100.
1. Open the shut-off valve in the low-pres- Note!
sure line. The span calibration is protected (switch 3) to
prevent the span from being adjusted by in-
2. Close the equalizing valve.
correct operation of the keys.
3. Open the shut-off valve in the high-pres-
sure line, the LED goes off.

20 EB 9527-1 EN
 Settings

Media 6 with LCD Release key.

Checking the measuring range (span) 4Write protection: switch 4 to ON.

If the key is pressed five times, Δp100, Span protection: switch 3 to ON.
which is the value for the maximum differential
pressure, appears on the display. Media 6 with LED
First check zero, as described in section 6.3. Checking the measuring range (span)
key five times. Δp100 = X.XXX 4
First check zero, as described in section
Press
6.3.
(x1000) mbar appears on the display.
4 Use a precision regulator to apply a test
4 Use a precision regulator to apply a test pressure corresponding to the maximum
pressure corresponding to the maximum differential pressure Δp100 while monitor-
differential pressure Δp100 while monitor- ing the pressure gauge.
ing the pressure gauge. Set point values: Δp = 0 mbar = 4 mA (See
Set point values: Δp = 0 mbar = 4 mA (See also note on gas column correction on p. 18).
also note on gas column correction on p. 18).
Δp100 % = XXXX mbar = 20 mA.
Δp100 = XXXX mbar = 20 mA.
If the reading and output signal do not corre-
If the reading and output signal do not corre- spond with the indicated value Δp100%, the
spond with the indicated value Δp100, the up- upper range value of the measuring range
per range value of the measuring range (span) (span) must be readjusted.
must be readjusted.
Checking the measuring range (span)
4 First check zero, as described in section 4
Checking the measuring range (span)
Write protection: switch 4 to OFF.
6.3.
Span protection: switch 3 to OFF.
4 Write protection: switch 4 to OFF. 4 Use a precision regulator to apply a test
Span protection: switch 3 to OFF.
pressure corresponding to the maximum
Press key five times. Δp100 = X.XXX
differential pressure Δp100 while monitor-
(x1000) mbar appears on the display.
ing the pressure gauge.
4 Use a precision regulator to apply a test Keep key pressed down, current signal I
pressure corresponding to the maximum shows the present mA value. LED starts to blink
differential pressure Δp 100 while moni- rapidly.
toring the pressure gauge.
Press key. The span is calibrated, current
Keep key pressed down, the current
signal goes to 20 mA. The LED is lit continu-
measured value is shown in the display.
ously for approx. two seconds.
Current signal I shows the present mA value.
Release key, the LED goes out.
Press key, the span is calibrated, current
signal goes to 20 mA. The reading is equal to 4
Write protection: switch 4 to ON.
Δp100. Span protection: switch 3 to ON.

EB 9527-1 EN 21
 Settings

6.5 Setting limit switches 6.5.2 Alarms A1 and A2

6.5.1 Max. limit for filling limit du- Media 6 with LCD
ring operation Alarm A1 and A2 markers
Both limit switches are already set over the
Note! software either as min. or max. alarms.
The filling limit during operation set over the A1MIN or A1MAX as well as A2MIN or
software can only be changed over the keys in A2MAX appear on the display. Both limit
the Media 6 version with LCD. switches must be set and confirmed sepa-
rately.
UCW Marker 4 Write protection: switch 4 to OFF.
4 Write protection: switch 4 to OFF. Press and hold down key 8 seconds
Press and hold down key 8 seconds long until UCW appears at the top of the
long until UCW appears at the top of the display.
display and underneath the associated %
value. Press or key to switch between
alarm A1 or A2.
Press key to confirm the display.
Press key to confirm selected alarm.
Press key to reduce the value in steps
of 1 % or press key to increase the Press key to reduce the value in steps
value. of 1 % or press key to increase the
value.
Press key to confirm new setting.
Press key to confirm new setting.
4 Write protection: switch 4 to ON. Press and hold down key 8 seconds
long until UCW appears at the top of the
display.
Press or key to switch over to the
second alarm that needs to be set.
Confirm selected alarm and set as de-
scribed above.
4 Write protection: switch 4 to ON.

22 EB 9527-1 EN
 Settings

Media 6 with LED Press key to reduce the value in steps

of 1 % or press key to increase the
Connect an ammeter to the power supply at value.
connector A (Fig. 7) or to the TEST terminal.
Press key to confirm new setting. The
Both limit switches are already set over the LED goes off.
software as either min. alarm or max. alarms
and are displayed to the assigned differential 4 Write protection: switch 4 to OFF.
pressure corresponding to a current between
4 and 20 mA. Both alarms need to be set and
confirmed separately.
4 Write protection: switch 4 to OFF.
Alarm A1
Press and hold down key 8 seconds
long until the LED starts to blink slowly.
Press key to display the currently set
A1 alarm at the ammeter. The LED lights
up.
Press key to reduce the value in steps
of 1 % or press key to increase the
value.
Press key to confirm new setting. The
LED goes off.

Alarm A2
Press and hold down key 8 seconds
long until the LED starts to blink slowly.
Press or key to switch to the A2
alarm, indicated by the LED which starts
to blink quickly.
Press key to confirm the selected
alarm. The LED lights up.
The currently set A2 alarm is indicated
at the ammeter.

EB 9527-1 EN 23
 Settings

6.6 Ammeter function Media 6 with LED

In order to check the functioning of connected 4 Write protection: switch 4 to OFF.

devices, an output signal of 4 to 20 or
22.8 mA can be adjusted for a short time re- Ammeter 4 mA
gardless of the current liquid level in the tank. Press and hold down key.

Media 6 with LCD Press key within 8 seconds and hold

down, output signal I = 4.0 mA indicated
4 Write protection: switch 4 to OFF. by the LED blinking quickly.
Press key to change the signal be-
Ammeter 4 mA
tween 4.0 mA and 22.8 mA indicated by
Press and hold down key. an illuminated LED.
Press key within 8 seconds and hold Release key, current signal I indicates
down, output signal I = 4.0 mA. the mA value corresponding to the tank
capacity. The LED goes out.
Release key to change the signal be-
tween 4.0 mA and 22.8 mA.
Ammeter 20 mA
Release key, current signal I indicates
the mA value corresponding to the tank Press and hold down key.
capacity. Press key within 8 seconds and hold
down, output signal I = 20.0 mA indi-
20 mA ammeter cated by the LED blinking slowly.
Press and hold down key. Press key to change the signal be-
tween 20.0 mA and 22.8 mA indicated
Press key within 8 seconds and hold
by an illuminated LED.
down, output signal I = 20.0 mA.
Release key, current signal I indicates
Release key to change the signal be-
the mA value corresponding to the tank
tween 20.0 mA and 22.8 mA.
capacity. The LED goes out.
Release key, current signal I indicates
the mA value corresponding to the tank
4 Write protection: switch 4 to ON.
capacity.
4 Write protection: switch 4 to ON.

24 EB 9527-1 EN
 Memory pen

7 Memory pen Note!

Memory pens with data sets or existing config-
urations which were created with earlier
7.1 Data transfer using memory
TROVIS-VIEW software versions (1.02 to
pen 2.20) are not 1:1 compatible with Media 6
devices with firmware versions A 2.10 or
The memory pen is a portable data carrier. It
B 2.10.
transfers standardized data which corre-
They must first be loaded and converted over
sponds with the type of tank and the relevant
TROVIS-VIEW software version (2.30 or
gas data to Media 6 instruments on site over
higher).
the RS-232 interface (SERIAL INTERFACE),
Memory pens must be configured to suit the
without requiring a PC or a notebook to be
Media 6 firmware version.
connected.
A label tag can be attached to the memory
pen for identification. Media 6 with LCD
The customized data is transferred to the mem- Data transfer from Media 6 to memory pen
ory pen from a PC/notebook using the (upload) and from memory pen to Media 6
TROVIS-VIEW Configuration and Operator (download). Status: Write and read
Interface (see EB 9527-2 EN) or the data can
be copied from another Media 6 instrument.
4
Insert memory pen into the SERIAL
INTERFACE jack.
The memory pen can be configured to write MEMWR appears at the top of the display.
and read, read only or write only depending
Press or key to switch between
on the status determined by TROVIS-VIEW,
MEMWR = Write data from Media 6 de-
see table below:
vice to the memory pen and
MEMRD = Read data from the
memory pen to the Media 6 device.
Table 4 · Memory pen status
Memory pen With LCD LED indicated by Procedure
status blinking sequence

Write Long blinking Write data from Media 6 to the memory pen or
MEMWR
and = writing read data from the Media 6 device to the
or
read Short blinking memory pen.
MEMRD
= reading
Read data from the memory pen to the Media 6
Read only MEMRD Short blinking
device.
Write data from Media 6 device to the memory
Write only MEMWR Long blinking
pen.

EB 9527-1 EN 25
 Memory pen

4 MEMRD write protection: switch 4 to OFF. Media 6 with LED

Press key to activate selection.
Transfer data from the Media 6 device to
RUN appears on the display. When the the memory pen or from the memory pen to
data are saved, DONE appears on the the Media 6 device
display. You can remove the memory Status: Write and read
pen. 4 Insert memory pen into the SERIAL
INTERFACE jack.
4 MEMRD write protection: switch 4 to ON. The LED blinks in short sequence to indicate
that data are being read from the memory pen
Transfer data from memory pen to the Me-
and blinks in a slow sequence to indicate that
dia 6 device
data are being written to the memory pen.
Status: Read only
Press or key to switch between
4 Write protection: switch 4 to OFF. writing data from the Media 6 device to
4 Insert memory pen into the SERIAL the memory pen and reading data from
INTERFACE jack. the memory pen to the Media 6 device.
MEMRD appears at the top of the display.
Press key to start the data transfer.
4 On selecting read from the memory pen:
write protection, switch 4 to OFF.
RUN appears on the display. When the Press key to activate selection. The LED
data are saved in the Media 6 device, illuminates
DONE appears on the display. You can
remove the memory pen.
4 Remove the memory pen when the LED
goes off.
4 Write protection: switch 4 to ON. 4 Write protection: switch 4 to ON.
Transfer data from the Media 6 device to Transfer data from memory pen to the Me-
the memory pen dia 6 device
Status: Write only Status: Read only

4 Insert memory pen into the SERIAL 4 Write protection: switch 4 to OFF.
INTERFACE jack. 4 Insert memory pen into the SERIAL
MEMWR appears at the top of the display. INTERFACE jack.
The LED blinks rapidly.
Press key to start the data transfer.
Press key to start the data transfer, the
RUN appears on the display. When the
LED goes on.
data are saved in the memory pen,
DONE appears on the display. You can 4 You can remove the memory pen when the
remove the memory pen. LED goes off.
4 Write protection: switch 4 to ON.

26 EB 9527-1 EN
 Troubleshooting

Transfer data from the Media 6 device to 8 Troubleshooting

the memory pen
Status: Write only Errors that occur appear at the top of the LC
display indicated by the word ERROR with the
4 Insert the memory pen into the SERIAL corresponding error code, e.g. 16, below it.
INTERFACE jack.
The LED blinks slowly. The blinking sequence of the LED indicates the
error code of Media 6 with LED. For example,
Press key to start the data transfer, the error code 1 is signaled as follows:
LED goes on.
4 You can remove the memory pen when the
LED goes off.
long medium 9x short
Refer to the table for the description of the er-
ror codes.
Reset or confirm errors by pressing the key.
7.2 Connection to the PC Any new error messages then remain sup-
pressed for 8 seconds.
Media 6 can also be operated over the SERIAL
INTERFACE jack from a PC/notebook using Troubleshooting using the memory pen
the TROVIS-VIEW Configuration and Opera-
tor Interface. If you have a SAMSON memory pen, it can be
used, if necessary, to transfer new data to the
Refer to the Mounting and Operating Instruc-
instrument within this time.
tions EB 9527-2 EN for operation.
Troubleshooting using a PC or notebook
Communication with a PC or notebook over
the SERIAL INTERFACE jack functions even in
the error mode.

Hardware errors
These errors are saved in the EEPROM and re-
set over the SERIAL INTERFACE after repair at
the manufacturer's.

EB 9527-1 EN 27
 Troubleshooting

Table 5 · Error codes

Error code Description Remedy
Number LED blinking
on LCD sequence
Hardware error

1 1x long/medium/ Oscillatory circuit differential inductor faulty Return device to SAMSON for repair
9x short

2 1x long/1x short/ RAM checksum error, RAM is defective Return device to SAMSON for repair
medium/8x short

4 1x long/2x short/ EEPROM checksum error. Return device to SAMSON for repair
medium/7x short
Calibration or measuring range error or error in the tank characteristic

8 1x long/3x short/ Δp not within permissible range. The Reset error and load other tank or
permissible range is between 20 and 110 %
medium/6x short gas data or use a suitable dp cell.
of the nominal range of dp cell.

16 1x long/4x short/ The coordinates for the tank

Error in the tank characteristic characteristic must be strictly
medium/5x short
monotonic increasing.

32 Calibration Δp sensor. Check zero and span adjustment,

1x long/5x short/ Zero and span adjustment produce values taking the Δp into account.
medium/4x short outside of the permissible range. These Otherwise, return device to
values are not saved in the EEPROM. SAMSON for repair
Other errors

64 1x long/6x short/
Error in floating point. Check tank or gas data.
medium/3x short

128 Memory pen invalid.

1x long/7x short/ The memory pen ID is incorrect or faulty. Use a memory pen suitable for the
medium/2x short Data cannot be read, however, writing to Media 6 device.
the memory pen is still possible.

256 1x long/8x short/ Confirm error and transfer data

Memory pen checksum error again to memory pen. If error still
medium/1x short
occurs, replace the memory pen.

512 1x long/9x short/ Error in RS-232 communication. The USART Confirm error and check
has detected an error, or there is a buffer
medium communication.
overflow.

Note
Error codes might refer to an addition of all the errors: for example, ERROR 24 -> Error code 8 and
error code 16
When an error code appears on the display, the current output signal of the Media 6 device is switched
to ≤ 3.6 mA.

28 EB 9527-1 EN
 Servicing explosion-protected versions

Calibration and measuring range error or 9 Servicing explosion-protected

error in the tank characteristic versions
You can only exit the error mode by resetting. In the event that a component of the Media 6
on which the explosion protection is based
If necessary, new data must first be loaded
must be serviced, the instrument must not be
into the device (see section 7.1).
put back into operation again until an expert
After confirming using the key, 8 seconds has inspected the device according to explo-
remain until a new error message can appear. sion protection requirements, has issued a cer-
tificate stating this, or given the device a mark
The short time interval is long enough to start
of conformity.
the transfer of new data from the memory pen.
Inspection by an expert does not have to be
The instrument is automatically reset on re-
carried out, if the manufacturer performs a
moving the memory pen.
routine test on the device prior to taking it into
With communication using a PC or notebook, operation again, and the success of the rou-
the instrument is automatically reset after the tine test is documented by attaching a mark of
data is transferred. conformity to the device.
Explosion-protected components may only be
Other errors
replaced by original checked components
Confirm errors by pressing key to allow the from the manufacturer.
instrument to continue working.

EB 9527-1 EN 29
 Dimensions in mm

10 Dimensions in mm

141.5
80
37

Pressure sensor
depending on
manufacturer
194
180.5
Control panel 148 32.5

A
M8

40 60
72

121

20 80

58
m3
B 0 % 100

245.5
158.5

145.8
114.5
117

25.5 31
43 60
Pressure gauge 80
depending on Pressure gauge connections:
manufacturer for pressure gauge NG 100:
Male thread G ½ B-LH with clamping sleeve G ½
DIN 16283 and O-ring 12x2
30 for pressure gauge NG 63:
female thread G ¼ with seal
17

Two boreholes with Ø 8.5 mm for fastening to the back

158

of the measuring chamber for screws M 8

30

Two boreholes with Ø 8.5 mm for fastening to the

54

valve block

Fig. 8 · Dimensions

30 EB 9527-1 EN
EB 9527-1 EN 31
32 EB 9527-1 EN
EB 9527-1 EN 33
34 EB 9527-1 EN
EB 9527-1 EN 35
 S/Z 2017-10

SAMSON AG · MESS- UND REGELTECHNIK

Weismüllerstraße 3 · 60314 Frankfurt am Main · Germany
Phone: +49 69 4009-0 · Fax: +49 69 4009-1507
Internet: http://www.samson.de EB 9527-1 EN