REV 0, June 2005Page 168
Operation Manual SUPREMA
6. Startup
6.3 Start the Sensors
Before putting the sensors into service for the first time, several steps must be performed,
which depend on the type of sensor. Not only the instructions given here but also the operating
and maintenance instructions that came with the sensor to be connected must be followed.
Note: If errors occur during startup which cannot be corrected with the help of the
troubleshooting guide
in section 7 Maintenance and Sercice contact an MSA service
technician.
6.3.1 Presetting of Passive Sensors
To simplify the presetting of passive sensors, the MAI module has been revised.
Thi revision is valid as of PCB version:
1234
O4 O4 O4 O4
Instrument status: “B”
The operational steps to be carried out and the signal voltages present at the test sockets are
depending from the instrument status of the module. Die durchzuführenden Bedienschritte
und die an den Meßbuchsen anliegende Signalspannungen hängen vom G-Zustand des Mo-
duls ab. Therefore in the following sections the presetting for the different instrument status is
described one by one.
6.3.2 Auxiliary Equipment Required
To preadjust the sensors on the MAI module, remove the screws holding the front panel in place
and swing the panel down. The following tools will be required:
• a TORX T8 screwdriver (for removing the screws on the front panel),
• a voltmeter with a voltage measuring range of 0 ... 3 VDC,
• 2 connecting cables (for connecting the voltmeter to the MAI measuring socket,
Ø 2 mm).
• a zero gas and a test gas appropriate to the sensor and to the substance to be detected,
and
• a calibration adapter and hose connections suitable for the sensor (see the sensor
operating and maintenance (O & M) instructions).
After the system voltage supply has been turned on and the system has started successfully,
the following settings should be made on the appropriate MAI module for the startup of the
passive sensors:
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