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FMK 9002
Manual To Operations
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MST FMK 9002 Manual To Operations

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Guide to Operation

Remote Sensor Head FMK 9002
MST Technology GmbH Benediktstr. 1 82069 Hohenschäftlarn, Germany
Fon +49 (0) 8178.8690 Fax +49 (0) 8178.8220
www.mst-technology.com
Subject to change without notice Print No. 9002.0000.61.0D 05/2004

Table of Contents

Table of Contents
page
1. Parts Identification............................................................................................................3
2. Installation ........................................................................................................................4
2.1 Location of the FMK 9002 ................................................................................................4
2.2 Mounting the FMK 9002...................................................................................................4
2.3 Connecting the FMK 9002 ..............................................................................................4
3. Start-Up............................................................................................................................5
3.1 Setting the FMK 9002 to Operation..................................................................................5
3.2 Locking the Alarms at the Central Controller FMS 8700..................................................5
3.3 Operating Modes..............................................................................................................5
3.4 Functional Test and Scaling External Control Systems ...................................................6
3.4.1 4 mA Simulation (Zero) ....................................................................................................6
3.4.2 20 mA Simulation (full scale)............................................................................................6
4. Sensor Replacement........................................................................................................7
4.1 Replacing the Oxygen Sensor .........................................................................................7
5. Calibration ........................................................................................................................8
5.1 Zero Adjustment...............................................................................................................8
5.2 Span Adjustment with Calibration Gas.............................................................................8
5.3 Span Adjustment for Oxygen Sensors .............................................................................9
5.4 Span Adjustment with Calibration Current .......................................................................9
6. Spare Parts ......................................................................................................................10
7. Sensor Order Information.................................................................................................11
8. Approvals .........................................................................................................................12
page 2

1. Parts Identification

Parts Identification
4
6
7
3
12
5
2
1
9
11
8
10
Functional Elements
1 Gas Sensor
2 Sensor Cap 3 4 ... 20 mA Interface Connection 4 Wall Mounting Support 5 Digital Gas Concentration Display
Operational Controls for Sensor Calibration
6 Zero Adjustment Potentiometer 7 Span Adjustment Potentiometer
Operational Elements for Instrument Functions and 4 . . . 20 mA Interface Test
8 Selector Switch for Operating Modes
9 LED Indication for Operating Modes 10 Push Button for 4 mA Simulation and Zero Adjustment of Sensor 11 Push Button for 20 mA Simulation and Sensor Sensitivity 12 Test Plug for Alarm Simulation
page 3

2. Installation

2.1 Location of the FMK 9002
The following aspects must be taken into consideration before locating the FMK 9002:
- Location close to the hazardous area and for personal monitoring applications at head level
- Property of the target gas, e.g. lighter or heavier than air
- Protection against sunlight, spray water, rain, and dust
- Free access for maintenance personnel
For narrow monitoring locations a sensor extension is available as an option.
2.2 Mounting the FMK 9002
As a standard accessory a wall mounting support is delivered with the FMK 9002. At the monitoring point the wall mounting support is fixed to the wall with four screws (M5), with the black locking knob on top and facing the FMK 9002.
Finally, the FMK 9002 is affixed to the wall mounting support.
Installation
2.3 Connecting the FMK 9002
Connect the two wires of the cable fixed to the FMK 9002 with the two-wire cable leading to the Central Controller FMS 8700 or FMS 8710.
If the FMK 9002 is connected to other 4 ... 20 mA Central Control Systems, the limit values for the power supply (7.5 ... 15 V) must be observed.
Pay attention to the correct polarity of the two-wire cable !
A watertight junction box is recommended for connection. The maximum length of the two-wire cable is subject to the technical specifications of the type of cable used as well as to the capacitance values stated in the ex-proof certificate.
The following applies in combination with the Central Controller FMS 8700 or 8710:
Version Cable diameter Distance
standard 2 x 0.5 mm
intrinsically safe 2 x 0.5 mm
With the intrinsically safe version of the Central Controller FMS 8700 and FMS 8710, the maximum allowable capitance of 190 nF/km at the ex-separator must be observed.
2 x 0.75 mm
2 x 0.75 mm
2
2
2
2
3.6 km
5.4 km
0.8 km
1.2 km
A type of cable with f.i. 200 nF/km, allows a maximum cable length of 0.95 km.
page 4

3. Start-Up

Each FMK 9002 is factory tested and calibrated. These data are stated in the test certificate.
To prevent the Remote Sensor Head FMK 9002 from manipulations by unauthorized personnel, settings like change of operation mode, functional tests, scaling of external control systems, and calibration are only possible when the red test plug is inserted. After settings have been performed, the test plug should be removed and preserved carefully.
3.1 Setting the FMK 9002 to Operation
Connect the power cord of the Central Controller FMS 8700 or FMS 8710. The green operating mode LED (MONITOR/CALIBR) will light. The gas concentration is indicated at the Digital Display. If in target gas free atmosphere the indicated concentration value is not zero, perform zero adjustment (see section 5.1).
3.2 Locking the Alarms at the Central Controller FMS 8700
To prevent that alarm relays are activated and external alarms are released during electrical or gas-technical checks, the "EXT ALARMS" key switch at the Central Controller FMS 8700 must be set to the "OFF" position.
Start-Up
The "FAULT" LED at the Central Controller will be lit and the according relay will be activated. This ad­ditional precaution was taken to alert all parties concerned, f.i. operating personnel at external control rooms, to the changed monitoring status of the FMS 8700.
3.3 Operating Modes
There are two different operating modes for the FMK 9002. Insert test plug and select operating mode by once pressing the "MONITOR/CALIBR" key. The operating mode LED changes from status on to off.
(a) Monitor Mode (MONITOR)
- Green LED is lit with an intensity proportional to the gas concentration.
- The current passing the 4 ... 20 mA loop is proportional to the gas concentration.
(b) Calibration Mode (CALIBR.)
- The green LED is off.
- There is a constant current of less than 2 mA passing the 4 ... 20 mA loop.
Note:
After settings have been performed, the test plug should always be removed and preserved carefully.
page 5
3.4 Functional Test and Scaling External Control Systems
For electrical checks of the 4 - and 20 mA-signals or scaling external Control Systems, put the red test plug into the jack on top of the instrument. Thus, the test signal is passed on to the current loop with 4 mA representing a zero concentration and 20 mA representing a full scale concentration.
The selected operating mode is monitor and the green LED is lit.
3.4.1 4 mA Simulation (Zero)
- Press and hold button "4 mA/Zero"
- The current in the 4 ... 20 mA loop is 4 mA
- Zero is indicated at the FMK 9002 and FMS 8700/8710's displays
- Alarm is not activated at the FMS 8700 or FMS 8710, except with instruments for oxygen deficiency
3.4.2 20 mA Simulation (full scale)
- Press and hold button "20 mA / CE Value"
- The current in the 4...20 mA loop is 20 mA
- The green LED will be lit intensively
- Full scale is indicated at the FMK 9002 and the display of the FMS 8700 or FMS 8710
- Both alarms are activated and indicated by the according LEDs at the alarm module, except
with instruments for oxygen deficiency
Start-Up
Note:
After terminating the functional test, the test plug should be removed in order to prevent eventual alarm releases by unauthorized personnel. The test plug must be saved for regular checks.
page 6

4. Sensor Replacement

(for oxygen sensors refer to section 4.1)
- Screw off sensor cap and withdraw the old sensor
- Remove the shorting socket from the new sensor
- Plug the new sensor into the socket on the FMK 9002 Be sure to align the orientation guide properly before pushing the sensor into place.
- Write down the concentration value CE stated on the sensor
- Screw in the sensor cap
- Perform calibration procedure
4.1 Replacing the Oxygen Sensor
- Screw off sensor cap and withdraw the old sensor
- Plug the new sensor into the socket on the FMK 9002
- Be sure to align the orientation guides properly before pushing the sensor into place.
- Screw in the sensor cap
- Perform calibration procedure
Sensor Replacement
page 7

5. Calibration

Gas for Tests and Calibration
Test Gas: Calibration gas of a known concentration at or close to the TLV for the target gas Zero Gas: Fresh air or synthetic air
The test plug is inserted, the selected operating mode is calibration (CALIBR.), the green LED is off. This operating mode does not apply for the FMK 9002 for oxygen (for O2 continue with section 5.3).
Note: Be sure to use a proper size screwdriver to prevent damaging the instrument.
5.1 Zero Adjustment
(Does not apply to FMK 9002 for oxygen)
- Expose the FMK 9002 to Zero gas
- Allow the reading on the digital display to stabilize. If a new sensor has just been installed, it may take a few minutes
- Press and hold the button "4 mA/Zero" while turning the adjustment (Zero) with a srewdriver until the digital display reads all zeros
Calibration
Deviations however are acceptable, since the FMK 9002 automatically adjusts to a higher sensitivity.
5.2 Span Adjustment with Calibration Gas
(Does not apply to FMK 9002 for oxygen)
- Place the calibration cap (P/N 8600-4002) over the sensor and start the calibration gas flow
(flow volume approx. 18 l/h or 300 ccm/min)
- Allow the reading on the digital display to stabilize
- Turn the span adjustment (SPAN) with a screwdriver until the reading on the digital display
matches the concentration of the calibration gas
- Remove calibration gas and calibration cap
- Allow several minutes for the sensor to "clear". Check and readjust the zero reading as required
(see section 5.1 above)
- Press the button "MONITOR/CALIBR" to return to the monitoring mode.
Note: If a high degree of accuracy in monitoring is required, monthly calibrations with calibration gas of a known concentration are recommended. The frequency of sensor tests should be determined by the application and can be performed whenever required with test gas from lecture bottles, available at major gas suppliers.
5.3 Span Adjustment for Oxygen Sensors
- Selected FMK 9002 operating mode is monitor (MONITOR)
- The green LED is lit
- The FMK 9002 oxygen sensor can always be calibrated in fresh air (O2 - content 20.9 %-vol). Turn the span adjustment (SPAN) with a srewdriver until the reading on the digital display shows the concentration value of 20.9 %-vol.
page 8
5.4 Span Adjustment with Calibration Current
Applicable for replacement sensors only.
The data label on each spare sensor shows the specific concentration value CE. This value states the equivalent concentration to a certain constant calibration current.
This adjustment must be performed in gas free atmosphere.
- Selected FMK 9002 operating mode is calibrating
- Zero adjustment according to section 5.1
- Press and hold button "20 mA/CE Value" (calibration current will be fed)
- Turn the span adjustment with a screwdriver until the reading of the digital display matches the CE concentration value.
Note: After the requested tests and settings have been performed, the test plug should be removed in order to prevent eventual manipulations by unauthorized personnel. The test plug must be saved for regular checks.
Calibration
page 9

6. Spare Parts

Description Part No.
______________________________________________________
Sensor Adaptor, standard ...............................................9002-0150
Sensor Cap, standard .....................................................9002-0151
Test Plug, package of ten ...............................................5-STEST-01K
Calibration Cap, standard ...............................................8600-4200
Wall Mounting Support....................................................8601-0040
Guide to Operation, German...........................................9002-2-0001
Guide to Operation, English ............................................9002-2-0002
Note: It is recommended to indicate model and serial number of your FMK 9002 when ordering.
Spare Parts
page 10
7. Sensor Order Information
The part number for the replacement sensor is written on the label of the depleted sensor cell. It is recommended to state model, serial number, target gas and range of your FMK 9002 when ordering re­placement sensors.
Contact MST for information on prices and delivery time.
Sensor for FMK 9002 Range Sensor Part No.
______________________________________________________________________
AsH3 Arsine.......................................0 - 1,00 ....ppm.......................9002-6000
B2H6 Diborane ..................................0 - 1,00 ....ppm.......................9012-6200
Br2 Bromine ...................................0 - 5,00 ....ppm.......................9012-6800
Cl2 Chlorine ...................................0 - 10,0 ....ppm.......................9012-5300
Cl2 Chlorine ...................................0 - 5,00 ....ppm.......................9012-5301
CO Carbon Monoxide ....................0 - 1000....ppm.......................9002-5400
COCl2 Phosgene.................................0 - 1,00 ....ppm .......................9012-6600
F2 Fluorine....................................0 - 5,00 ....ppm .......................9012-6400
GeH4 Germane..................................0 - 5,0 .....ppm .......................9012-6900
H2 Hydrogen .................................0 - 0,500 ..%...........................9012-5100
H2S Hydrogen Sulfide .....................0 - 100 .....ppm.......................9012-5200
HBr Hydrogen Bromide...................0 - 50 .......ppm.......................9012-7000
HCl Hydrogen Chloride...................0 - 50 .......ppm.......................9012-5800
HCN Hydrogen Cyanide...................0 - 50 .......ppm.......................9002-5700
HF Hydrogen Fluoride ...................0 - 10,0 ....ppm.......................9012-6500
N2H4 Hydrazine.................................0 - 1,00 ....ppm .......................9002-7600
NH3 Ammonia..................................0 - 100 .....ppm.......................9012-6700
NO Nitric Oxide ..............................0 - 100 .....ppm.......................9012-7200
NO2 Nitrogen Dioxide ......................0 - 25,0 ....ppm.......................9012-7300
O2 Oxygen ....................................0 - 25,0.....%...........................9002-5500
O3 Ozone ......................................0 - 1,00 ....ppm.......................9002-7100
PH3 Phosphine................................0 - 1,00 ....ppm.......................9002-6100
SiH4 Silane.......................................0 - 50 .......ppm.......................9012-6300
SO2 Sulfur Dioxide ..........................0 - 25,0 ....ppm.......................9012-5900
SO2 Sulfur Dioxide .........................0 - 0,250 ..%...........................9012-5901
TEOS Tetraethyl Orthosilicate............0 - 100 ......ppm.......................9002-7500
Sensor Order Information
page 11

8. Approvals

Approved to meet the Intrinsic Safety Standard EEx ib I, BVS Nr. 92.C.1003.
Approved to meet the Intrinsic Safety Standard EEx ib IIC T6, BVS Nr. 92.C.2002.
Approved to meet the European Safety Standards EN 50014 and EN 50020.
Copies of these approvals are provided as an appendix to this guide of operation.
Note: Substitution of components may impair intrinsic safety.
Approvals
page 12

Certificates

page 13
Certificates
page 14
Certificates
page 15
Certificates
page 16
Certificates
page 17
Certificates
page 18
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