Gas detector is an instrumentation tool for gas leakage concentration detection, which mainly uses sensors to detect the types of gases present in the environment, and gas sensors are used to detect the composition and content of gases.
Many environmental factors can affect the readings of gas detector sensors, especially oxygen detectors. This includes changes in pressure, humidity, and temperature. Changes in pressure and humidity affect the amount of oxygen that is actually present in the atmosphere.
Pressure changes
If the pressure changes dramatically (e.g., when passing through an air lock), the gas detector sensor reading may fluctuate temporarily, which may cause the detector to sound an alarm. When the percentage of oxygen by volume is stable at around 20.8%, and the overall pressure drops significantly, the oxygen used for breathing in the environment may become a hazard.
Humidity changes
If the humidity changes significantly (e.g. when entering an outdoor humid environment from a dry environment with air conditioning), the water vapor in the air will drive away oxygen, causing oxygen readings to drop by as much as 0.5%. The gas detector sensor is equipped with a special filter to eliminate the effect of humidity changes on gas readings. This effect is not immediately noticeable, but over the course of several hours it will slowly affect the degree of oxygen.
Temperature changes
The sensor is temperature compensated. However, if the temperature fluctuates sharply, the gas detector sensor readings may drift. The instrument should be calibrated at the job site in order to minimize the effect of temperature changes on readings.
When cleaning the gas detector, it is necessary to frequently clean the appearance of the instrument with a damp cloth, and it is forbidden to use detergents. Because the detergent may also have silicon, it can damage the combustible gas sensor. When storing, you should choose a safe and boring place as much as possible, and the storage temperature range is 18°C-30°C. Before using a registered gas detector, it is necessary to reproduce the condition of the detector. During transportation, the protective gas detector should be used in a properly padded transport package to avoid accidental damage to the instrument during transportation.
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