Geotech GEM5000 User Manual


Page 54 of 127
Operating Manual
OMGEM5KN – Iss. 5.1

Copyright – Geotechnical Instruments (UK) Ltd
GEM5000
key ‘Store’ to store and record the reading.
Key 5 – Enter Temperature
This action enables the operator to manually enter a
temperature reading if not using a temperature probe prior
to taking a gas measurement.
Key 6 – Start Logging
This action enables the operator to leave the analyser
unattended to take samples at a predetermined time. The
reading interval and pump run times may be edited prior to
commencing the logging cycle.
Configuration of the data logging option
The analyser can also be set-up to data log
1) Connect the gas inlet (white port) to the sample point. The yellow exhaust hose can be vented a safe
distance from the sample point; do NOT re-circulate back into the system.
2) By selecting ‘Next ID’ the operator can select the ID which is being sampled at present.
3) Once the ID has been chosen the analyser will commence & complete its clean air purge cycle.
4) To gain access to the data logging option the operator will be required to select the ’Special Action’
key to obtain the special user options. The data logging option can then be selected via ‘Key 6’ to
configure the logging parameters.
5) Once the operator has confirmed the logging parameters, select soft-key ‘Start Logging’.
6) Once the logging function has been activated the analyser will carry out a 30 second warm-up
(displayed below the temperature read out at the right of the main gas read screen) and begin the
first sample.
7) 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.
8) Select soft-key ‘Stop Logging’ to stop logging if required.
Profiling option
1) The ‘Logging Mode’ centre soft-key toggles between ‘Logging Mode’ and ‘Profiling Mode’ and
pressing it will change the mode to the one the soft-key describes. For example, when on the
profiling page the key will display as ‘Logging Mode’ and when on the logging page the key will
display as ‘Profiling Mode’.
2) To edit the parameter the operator will be required to select ‘Key 3’ to select the number of reading
required. Once the number of readings has been updated press the return key to confirm parameter
setting.
3) By selecting ‘Key 2’ the operator can edit the logging interval of their logging preferences and then
confirm the amendments by pressing the return key.

Geotech GEM5000 Specifications

General

Brand	Geotech
Model	GEM5000
Category	Measuring Instruments
Language	English