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GASURVEYOR 7B-500R - USER HANDBOOK
CSM Mode (Confined Space Monitoring)
Alarms are active for the LEL, O
2
and CO ranges.
When an alarm is activated, the instrument display will
automatically change to the alarming range.
Alarms will be audible, visible and non-latching. There will
also be an audible and visual confidence signal (every 8
seconds) to indicate the instrument alarms are operational.
Switching ON
Press and hold
to turn ON the instrument in CSM mode.
The pump will switch on and the instrument will go through
the warm up sequence.
Switching OFF
Double press
to switch the instrument OFF.
Gas Ranges
The following gas ranges can be selected in CSM mode:
• LEL / Vol GAS (auto-range)
• O
2
• CO
When first switched on LEL will be selected. To change the
range, single press
. Each single press will cycle through
the gas ranges shown above.
Pump Operation
There is NO pump control: Normal pump speed only.
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