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Operating Manual
OMGEM5KN – Iss. 5.1
Copyright – Geotechnical Instruments (UK) Ltd
Do NOT attach the gas supply to the gas analyser before putting the analyser into the ‘Gas Check’
screen. Select ‘Check Spans’ from the ‘Operation Settings’ menu.
The regulator supplied with the calibration kit has been configured to deliver a fixed flow. As the regulator’s
flow is factory set, it only requires a few turns to open, no adjustment is necessary. It’s also supplied with a
pressure relief valve, to avoid over pressurisation.
Exhaust port
When the gas analyser is being calibrated, there are two possible exits for the gas, via the usual
manner out of the exhaust (yellow) port of the analyser or in cases of over-pressurisation the 1/16”
port on the red pressure relief valve located on the regulator.
It is recommended that both ports have exhaust tubing attached.
The exhaust tubing must emerge in a well-ventilated area. Ensure there are no leaks in the tubing
and connections.
The calibration of the gas analyser should be carried out in a safe area with all necessary
precautions taken when using potentially dangerous, explosive or toxic gases.
Note: There is also potential for gas to expel from the internal flow (blue) port of the gas analyser.
Calibration equipment
The diagram below displays the regulator and tubing equipment for user calibration:
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