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5
Technical Information
Troubleshooting
Trouble
Unstable reading/Reading Drift
Trouble
Low sampled slow
132/140
Answer
Due to saturated sensor (spikes) or high room
temperature (drift)
Operate with environmental temperature
between 5 °C and 35 °C - 90 %HR
Answer
Due to clogging of line
Check probe line (pipe)
Replace glass-wool filter
Clean sintered filter
Start Sampled flow auto-adjust in addition to periodical
start (20h)
PHD-4 Portable Helium Detector User Manual / 87-900-120-01 (F )
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