9-4
SNIFFER MODEUSER HANDBOOK
9.5.3 Zero
To zero the ppm range
• Press and hold the RH button .
Note: The pump must be switched ON to zero the ppm range.
9.5.4 Flow Fault
If ow fault is detected, the pump stops automatically. The instrument
should be checked for water ingress or blockage.
To clear the ow fault:
(Once the blockage has been cleared):
• Press the RH button .
9.5.5 Ticker (Geiger) On / Off
To enable / disable the Geiger (Ticker):
• Press and hold the UP and DOWN buttons
simultaneously, as follows:
1. Press and hold - to enable visual only.
2. Press and hold again - to disable both audible and visual.
3. Press and hold again - to enable both audible and visual.
9.5.6 Ticker (Geiger) Adjust
To adjust the Ticker (Geiger) threshold:
(after the Ticker (Geiger) feature has been enabled)
• Press the UP or DOWN buttons.
The threshold setting is displayed briey beneath the PPM CH
4
.
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