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Gas Monitor: I put a new sensor in the gas monitor and it won’t zero or calibrate and it’s in alarm or reading negative why?

April 26, 2017alarm calibrate Gas monitor negative Reading sensor Zero

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Gas Monitor: I put a new sensor in the gas monitor and it won’t zero or calibrate and it’s in alarm or reading negative why?

1 Answer

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Posted

All sensors except the LEL sensors must be in the unit with good batteries for a stabilization period before calibration and using the sensor. NH3, EtO, and NO may require up to 3 days to stabilize, 24 hours minimum. O2 and the other toxics will require 24 hours to completely stabilize. The unit needs to have a charged battery pack or good alkaline batteries for the sensors to stabilize. The unit does not need to be turned on; the sensors will draw a small amount of current even when the unit is in the OFF mode.