OMGEMN1.41
GEM2000 Range Gas Analysers
Page 22
Copyright 2009 Geotechnical Instruments (UK) Limited
2)
Upon completion of the self-test a ‘Passcode Entry Screen’ will be displayed.
3)
At this point release the ‘Enter’ key.
4)
Enter the code ‘12345’ and press the
‘
Enter’ key to confirm.
5)
After the passcode entry has been accepted the instrument’s serial number will be
displayed along with the hours of operation and two options:
•
•
•
•
1-Cold Start
•
•
•
•
0-Exit
6)
Only select ‘option
1’ if a cold start is to be carried out.
7)
After selection, ‘Key 1’ will require pressing again to confirm this operation.
8)
The cold start menu will be displayed again; press ‘Key 0’ to continue with normal
operation.
6.7 Storage
The analyser should not be exposed to extremes of temperature. Do not keep the analyser
in a hot car. When not in use analysers should be kept in a clean, dry and warm
environment, such as an office.
The read-out should be discharged and fully charged at least once every four weeks,
regardless of indicated charge state. The discharge function may be carried out with the
use of the ‘Data Logging’ function.
6.8 Battery/Charging
The battery used in the GEM2000 range is nickel metal hydride and manufactured as an
encapsulated pack from six individual cells. This type of battery is not so susceptible to
the top-up charging ‘memory effects’ as nickel cadmium batteries, although it is not
recommended that the unit is given small top-up charges.
The charger should only be disconnected when charged is indicated.
Warning
The battery charger is NOT covered by the Ex certification. The
battery must be charged only in a safe area.
The battery charger is intelligent and will indicate when the unit is charging and charged.
Note:
A full charge should take approximately two hours. Five bars indicate battery
full. If ‘B’ flashes very little charge is left and the instrument will switch off.
6.9 Memory
The analyser's memory is volatile, although it is retained by a battery back-up system.
The memory is not to be used as a permanent storage medium and any data should be
transferred to a more permanent storage medium as soon as possible.
Note:
The analyser should never be stored for prolonged periods with valuable data in
its memory. It is advisable to download all readings to GAM at the end of each
day’s monitoring.
