OMGEMN1.41
GEM2000 Range Gas Analysers
Page 20
Copyright 2009 Geotechnical Instruments (UK) Limited
6.0 General Operational Instructions
6.1 Switching the Instrument On
1)
To switch on the analyser, press and hold down the ‘On/Off’ key. A long beep will be
emitted followed by the Geotech (UK) Limited logo display.
2)
The ‘power on self-test’ will then commence. Refer to the message ‘Self-test mode,
please wait ….’ at the bottom of the analyser read screen.
3)
Following the self-test, the ‘Service Information’ and reminder screen will be
displayed.
4)
Select the ‘Enter’ key to take you to the ‘Main Gas Read Screen’.
Note:
If the ‘Event Log’ feature is enabled - select the ‘Enter’ key to take you
to the technician log-in screen (optional) which is then followed by the
‘Main Gas Read Screen’.
6.2 Switching the Analyser Off
1)
To switch off the analyser, press and hold down the ‘On/Off’ key for approximately
1.5 seconds, at which point a clean air purge will be carried out.
2)
If for any reason the analyser ‘locks up’ and will not switch off in this manner, press
and hold the ‘On/Off’ key for 15 seconds; this will force the instrument to switch off.
6.3 Warm-up Self-test
When switched on the read-out will perform a pre-determined self-test sequence taking
approximately 30-40 seconds depending on the types of chemical cells fitted.
During this time many of the analyser’s functions are tested, including:
•
•
•
•
General operation
•
•
•
•
Pump function
•
•
•
•
Gas flow measurement
•
•
•
•
Calibration
•
•
•
•
Backlight function
•
•
•
•
Solenoid function
•
•
•
•
Battery charge level
During the self-test the following information is also displayed:
•
•
•
•
Manufacturer’s service due date
•
•
•
•
The last gas check date
•
•
•
•
Software version programmed
•
•
•
•
Date format
•
•
•
•
Serial number
•
•
•
•
Operating language
•
•
•
•
Baud rate
•
•
•
•
The currently enabled sales option
Note: The warm-up should only be done with the analyser sampling fresh air.
