Startup, Calibration; Startup; Fidamat 5E-E, 5E-A; Fidamat 5E-I - Siemens FIDAMAT 5E Instruction Manual

7

Startup, Calibration

7.1

Startup

You should be acquainted with the operation of the FIDAMAT 5 (Section 8)!
Note! The service life of the pump diaphragm may be considerably shortened if the
sample gas line is closed and the pump generates a vacuum!
A prerequisite for correct start-up is the presence of hydrogen and combustion air with the
appropriate inlet pressures (3 bar above atmospheric).
The response time of the analyzer differs depending on its previous use. It is two to three hours in
the case of run-in analyzers, and longer when starting up for the first time or if the analyzer is
contaminated.
The analyzer displays the current software version when the power supply is connected. "Start"
subsequently appears in the display. The analyzer is in the status "Not ready".
Note! If the displayed measured value starts flashing during the start-up phase, the
analyzer must be recalibrated using functions 5 and/or 8.
7.1.1

FIDAMAT 5E-E, 5E-A

The gas pressures for hydrogen and sample gas/combustion air are checked immediately at the
start and following attainment of the oven temperatures. If the analyzer has already been used
correctly, the startup is usually carried without adjusting the pressure regulators (adjustable screws
on front panel or - with the FIDAMAT 5E-E (TÜV) - behind the front panel).
If the message "H2" appears on the display, the hydrogen pressure must be set to 1000 mbar (980
to 1020) overpressure using function 35 and the adjustable screw on the front panel. The analyzer
automatically returns to "Start" following termination of function 35.
If the message "Air" appears on the display, the sample gas pressure (combustion air pressure)
must be set to 380 to 390 mbar using function 36 and the adjustable screw on the front panel. The
analyzer automatically returns to "Start" following termination of function 36. The sample gas
pressure should be checked again in the status "Measure"; it should be 500 mbar with the pump
running. When restarting, the pressure without the pump may be higher than 390 mbar; it should
not be adjusted in this case, otherwise 500 mbar will not be achieved in the status "Measure".
The restart is carried out automatically. The analyzer automatically ignites the flame once the
operating temperatures have been reached and remains in the status "Standby", i.e. the pump is
switched off and no sample gas can enter the FIDAMAT. Function 65 can then be used to set the
analyzer to the status "Measure". The hydrogen pressure should be checked again in this status: it
should be 1000 mbar. The pressures need not be reset following a restart.
7.1.2

FIDAMAT 5E-I

With the FIDAMAT 5E-I, the sample gas pressure (approx. 550 mbar) is set automatically. The
hydrogen pressure is set or corrected in the same manner as with the FIDAMAT 5E-E and 5E-A.
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