Precautions for the use of combustible Gas Detectors

1. Pay attention to regular calibration and testing

Toxic and harmful Gas Detectors, like other analytical and testing instruments, are measured by a relative comparison method: first, a zero gas and a standard concentration gas are used to calibrate the instrument, and the standard curve is obtained and stored in the instrument. During the measurement, the instrument compares the electrical signal generated by the gas concentration to be measured with the electrical signal of the standard concentration, and calculates an accurate gas concentration value. Therefore, zeroing the instrument at any time and frequently calibrating the instrument are necessary tasks to ensure accurate measurement of the instrument.

It should be noted that many Gas Detectors can replace the detection sensor at present, but this does not mean that a Detector can be equipped with different Detector probes at any time. Whenever the probe is changed, in addition to the sensor activation time, recalibration of the instrument is required. In addition, it is recommended to test the response of the standard gas used for the instruments before using them, so as to ensure that the instruments really play a protective role.

2. Pay attention to the detection interference between various sensors

Generally speaking, each sensor corresponds to a specific detection gas, but any Gas Detector cannot be absolutely specific. Therefore, when selecting a gas sensor, it is necessary to understand as much as possible the interference of other gases to the sensor, so as to ensure its accurate detection of a specific gas.

3. Pay attention to the life of various sensors

All kinds of gas sensors have a certain service life, that is, life. Generally speaking, in portable instruments, LEL sensors have a longer service life, which can generally be used for about three years; photoionization Detectors have a service life of four years or longer; In one to two years; the life of the oxygen sensor is the shortest, about one year. The life of the electrochemical sensor depends on the dryness of the electrolyte, so if it is not used for a long time, sealing it in a lower temperature environment can prolong its service life. Due to the relatively large size of the fixed instrument, the life of the sensor is also longer. Therefore, it is necessary to test the sensor at any time, use it within the validity period of the sensor as much as possible, and replace it in time if it fails.

4. Pay attention to the concentration measurement range of the detection instrument

All kinds of toxic and harmful Gas Detectors have their fixed detection range. Only when the measurement is completed within its measurement range can the instrument be accurately determined. If the measurement is carried out beyond the measurement range for a long time, it may cause permanent damage to the sensor.