How to Deal with the High or Low Reading of the Gas Detector?

When the reading of the gain potentiometer in the carbon monoxide gas detector is too low, re-demarcation is a solution. First, open the switch on the gas bottle. Adjust the air quantity of the reducing valve and the flow counter should be readjusted. The adjustment range should be proceeded in accordance with the steps marked in the manual. The flowing speed of the pumping instrument and the flowing speed of the getter pump are adjusted to be equal to each other. In the following part, the flow of the extender is controlled at one hundred millimeter per minute. The pressure standard of ventilation should be adjusted to be slightly higher than the air pressure at the normal state and be discharged for around one minute.

After that, plug the gas tube onto the sensor's filtering cover. At the moment, the numerical value on the carbon monoxide gas detector starts to rise. Wait for two minutes and the numerical value will regain its stability. Then, the S-gain potentiometer can be adjusted to the concentration the same to the demarcated gas. During the adjustment process of the S gain potentiometer, the numerical value might fail to display. Under the condition, the sensor can be changed for a new one. Finally, close the valve on the gas  cylinder, and remove the air tube.

When the reading of the carbon monoxide gas detector alarm is too high, there are two potential causes. First, the data of the S gain potentiometer is high. The solution is to re-demarcate the S gain potentiometer. Second, when the data on the zero-point potentiometer is too high, the data on the zero-point potentiometer can adjust to zero. The adjustment method for the S gain potentiometer is consistent with Method 2 mentioned above. No further explanation will be made here. The troubleshooting method for the zero-point potentiometer is to clean the CO concentration to smaller than lµmol/mol, and the detergent for air cleaning can be the highly-pure nitrogen.

Gas detection and monitoring have become an indispensable part of industry, agriculture, and life. Gas detection and monitoring are mainly targeted at toxic and hazardous gases, combustible and explosive gases. There are different detection tools and methods, which are common to see, including the wireless gas sensor, gas detector, gas alarm and gas detector. Their working principle and working mode are different, and each have their advantages and disadvantages.