OMGEMN1.41
GEM2000 Range Gas Analysers
Page 42
Copyright 2009 Geotechnical Instruments (UK) Limited
7.8 How to Use a Gas Pod (Optional)
The gas pod enables the site engineer to measure additional gases which are not
measured as standard by the analyser i.e. SO
2
(sulphur dioxide) or extended ranges of
gases i.e. 0-5000ppm H
2
S.
This device may be used with the GEM2000 (3 gas analyser) and the GEM2000 Plus.
Note:
The analyser must be switched off before attaching or removing the gas pod.
The gas pod must be attached before any readings are taken.
Instructions for Use:
1)
Switch off the analyser and attach the gas pod to ‘Connector D’.
2)
Attach the short tubing from the gas pod to the ‘Gas Outlet Port’.
3)
At the point in which the user presses ‘Enter’ to store the gas readings the additional
gas is recorded.
4)
From the ‘Main Gas Read Screen’ the Ext. Port 1 field displays the gas pod reading.
5)
Gas pod readings can be analysed further when downloaded to the Gas Analyser
Manager.
Note:
If the analyser has an internal cell fitted that measures the same gas
the gas pod reading takes preference over the internal cell reading.
For further information please refer to the process diagrams for ‘Taking
Gas and Flow Measurements’.
Gas Pod
Reading
Gas Pod
Reading
