How does the four-in-one gas detector perform gas testing?
VOC detector is an instrument tool for detecting gas leakage concentration, mainly using sensors to detect the types of gases present in the environment. Gas sensors are sensors that detect gas composition and content. Many environmental factors may affect the readings of VOC detectors, especially oxygen detectors. Including changes in pressure, humidity, and temperature. The changes in pressure and humidity affect the actual amount of oxygen present in the atmosphere.
1, Pressure changes
In the case of drastic pressure changes (such as through a gas plug), the reading value of the gas detector sensor may experience temporary fluctuations, and the sensor may issue an alarm. The volume percentage of oxygen remains stable at around 20.8%. If the total pressure drops significantly, the use of oxygen for respiration in the environment is dangerous.
2, Humidity variation
When humidity changes significantly (from a dry environment with air conditioning to a humid outdoor air environment), water vapor in the air drives away oxygen, and the maximum reading of oxygen may drop to 0.5%. The gas detector sensor is equipped with a dedicated filter that can eliminate the influence of humidity changes on gas readings. Although this effect was not immediately detected, it will gradually affect the amount of oxygen after a few hours.
3, Temperature variation
The sensor is equipped with temperature compensation. However, if the temperature changes dramatically, the readings of the gas detector's sensors may drift. In order to minimize the impact of temperature changes on readings, the zero machine must be calibrated on site.
