What factors affect the reading of gas detectors?
Gas detector is an instrument tool for detecting gas leakage concentration, which mainly uses sensors to detect the types of gases present in the environment. Gas sensors are sensors used to detect the composition and content of gases. Many environmental factors may affect the readings of gas detector sensors during use, including changes in pressure, humidity, and temperature. So what specific factors affect the reading of gas detectors?
1. Pressure changes
If the pressure changes significantly (such as when passing through the gas plug), the gas detector sensor reading may experience temporary fluctuations, which may cause the detector to sound an alarm. When the oxygen volume percentage remains stable at around 20.8% and the overall pressure drops significantly, the oxygen used for breathing in the environment may become a danger.
2. Humidity change
If there is a significant change in humidity (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 oxygen, causing the oxygen reading to drop by up to 0.5%. The gas detector sensor is equipped with a specialized filter to eliminate the impact of humidity changes on gas readings. This effect will not be immediately detected, but it will gradually affect the degree of oxygen after several hours.
3. Temperature changes
The sensor is equipped with temperature compensation. However, if the temperature fluctuates violently, the gas detector sensor reading may experience drift. The instrument should be calibrated at the work site to minimize the impact of temperature changes on readings.
When cleaning a gas detector, it is necessary to frequently clean the outer surface of the instrument with a damp cloth, and the use of cleaning agents is strictly prohibited. Because the cleaning agent may also contain silicon, it can damage the gas detector sensor. When storing, choose a safe and dry place as much as possible, with a storage temperature range of 18 ℃ -30 ℃. Before using a stored gas detector, it is necessary to reproduce the calibration of the detector. During transportation, gas detectors should be protected with appropriately padded transportation packaging to prevent accidental damage to the instruments during transportation.
