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Geotech GEM5000 - Flow Devices

Geotech GEM5000
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Page 55 of 127
Operating Manual
OMGEM5KN Iss. 5.1
Copyright Geotechnical Instruments (UK) Ltd
GEM5000
4) Once the logging parameters are confirmed, commence the logging by selecting the ‘Start Logging’
key.
5) If for any reason during the logging cycle the inlet port becomes blocked, the analyser will sense this
as a ‘Flow Fail’ and the pump will automatically retry until the reading can be obtained. As such care
must be taken when positioning the sample tubing to ensure water/moisture ingress does not
occur.
6) Select soft-key ‘Stop Logging’ to stop logging if required.
Select the soft-key ‘Exit’ to exit this menu and return to the ‘Main Gas Read Screen’.
GEM analyser in GA mode
The operator may toggle between GEM (a gas extraction monitor) and GA (a landfill gas analyser) mode of
operation if required. From the ‘Special Action’ menu, select the middle soft-key to toggle between GEM and
GA Mode.
GEM analyser in GA mode - main gas read screen
Note: For operating instructions on how to use the GA5000 mode of operation, please refer to the GA5000
gas analyser operating manual.
Flow devices
The GEM5000 gas analyser enables flow measurements to be recorded by using:
A pitot tube
Orifice plate
An anemometer

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