M&C TechGroup PMA 100 Operator's manual - Manual (Page 32)

M&C Products Analysentechnik GmbH 9-3.12-ME
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The following alarm messages are available at the common
alarm output:
• concentration alarm 1 - 4 (if allocated, see above)
Status messages like:
• flow alarm,
• transducer temperature,
• hardware fault, and
• fault of the pressure sensor
• leaving the current measuring range.
are signalised via the alarm LED, the analyser display and
the status contact output. Menu point 12.4.6 enables to
identify a status fault via a permanent mA-output signal. It
is available at the Sub-D socket X3 (see 8.2.1).
The mA-measuring signal is overlaid by the status signal
output.
16.Closing down
• In case of a temporary closing down of the process con–
trol systems around the analyser, the AC mains supply of
the analyser must remain „ON“.
• In case of a temporary closing down of the analyser itself,
there are no special precautions required.
• In case of a closing down of the analyser for a longer
period, it is recommended to flush the analyser with clean
air in order to prevent that harmful gases will be left in
the instrument and damage the measuring cell.