Geotech GEM5000 - How to Use a Temperature Probe (Optional)

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Page 63 of 127
Operating Manual
OMGEM5KN – Iss. 5.1
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Copyright – Geotechnical Instruments (UK) Ltd
GEM5000
H
2
S Measurement:
H
2
S measurement could be affected by other gases. The main cross gas effects are:

SO
2
: 20% effect

NO
2
: 20% effect
Other cross sensitivities are possible. If you suspect a cross sensitivity problem please contact you supplier for
additional information.
Note: Other gases could cause cross-gas effects. If you suspect a cross sensitivity problem please contact the
Technical support team at Geotech on +44(0)1926 338111.
How to use a temperature probe (optional)
The temperature probe enables the site engineer to measure the temperature of the gas within a sample point.
The GEM5000 gas analyser uses the temperature of the gas to give more accurate flow measurement readings
as part of the instrument calculation.
GEM5000 & temperature probe
Instructions for use:
1) The temperature probe reading is taken along with the gas measurement reading.
2) The analyser must be at the ‘Main Gas Read Screen’.
3) Attach the temperature probe to ‘connector B’ (refer to section 5.3 – Instrument connections
points).
4) Insert the temperature probe into the sample point (borehole) at the same time as you attach the
sample tube to the sample point (two sample points are required for the borehole).