What factors affect the sensor of the gas detector in use?
1. Pressure changes
If the pressure changes sharply (such as when passing through the gas lock), the reading of the gas detector sensor may fluctuate temporarily, which may cause the detector to issue an alarm. When the volume percentage of oxygen is maintained at about 20.8%, and the overall pressure drops greatly, the oxygen used for breathing in the environment may become dangerous.
2. Humidity change
If the humidity changes significantly (such as when entering an outdoor humid air environment from a dry environment with air conditioning), the water vapor in the air will drive away the oxygen, which may cause the oxygen reading to drop ≥ 0.5%. Gas detector sensors are equipped with special filters to eliminate the effect of humidity changes on gas readings. This effect is not immediately noticeable, but slowly affects the oxygen level over hours.
3. Temperature change
The sensor has temperature compensation. However, gas detector sensor readings may drift if the temperature fluctuates wildly. Instruments should be zeroed at the job site to reduce the effect of temperature changes on readings.
