What are the factors that affect the reading of gas detector

What are the factors that affect the reading of gas detector? I believe that we are not new to gas detector As the name implies, gas detector is an instrument used to detect the concentration of leaked gas Its core component is sensor, because the gas detector uses sensors to detect the type and concentration of leaked gas Therefore, once the sensor fails, the gas detector cannot detect it So what are the factors that affect the gas detector reading? Today, Shenbei's technical experts answer for you Generally speaking, many environmental factors may affect the reading of gas detector sensor Including pressure, humidity and temperature changes The change of pressure and humidity will affect the actual amount of oxygen in the atmosphere Humidity change: if the humidity changes significantly (for example, when entering the outdoor humid air environment from the dry environment with air conditioning), the water vapor in the air will drive off the oxygen, which may cause the oxygen reading to drop up to 0.5% The sensor of gas detector is equipped with special filter to eliminate the influence of humidity change on gas reading This effect will not be immediately detected, but will slowly affect the degree of oxygen over a few hours Pressure change: if the pressure changes violently (such as when passing through the gas plug), the gas detector sensor reading may fluctuate temporarily, which may cause the detector to give an alarm When the oxygen volume percentage is stable at about 20.8% and the whole pressure drops greatly, the oxygen for breathing in the environment may become a danger Temperature change sensor with temperature compensation However, if the temperature fluctuates violently, the gas detector sensor reading may drift The instrument should be zeroed at the job site to minimize the effect of temperature changes on readings.