What Factors Affect Gas Detector Readings?
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 going from an air-conditioned dry environment to an outdoor humid air environment), the water vapor in the air will drive off the oxygen, causing the oxygen reading to drop by up to 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. The instrument should be zeroed at the job site to minimize the effect of temperature changes on the reading.
When cleaning the gas detector, it is necessary to clean the outer surface of the instrument with a damp cloth frequently, and the use of cleaning agents is strictly prohibited. Because the cleaning agent may contain silicon, it will damage the gas detector sensor. When storing, you should choose a safe and dry place as much as possible, and the storage temperature range is 18°C-30°C. Before using the storage gas detector, the calibration of the detector must be reproduced. During transportation, the gas detector should be protected by transportation packaging with proper padding to prevent accidental damage to the instrument during transportation.
