How to effectively maintain and extend the service life of toxic gas detectors
1. Pay attention to regular calibration and testing
Toxic gas detectors are also measured in a relatively comparative manner, as are other analytical instruments: the instrument is first calibrated with zero gas and standard concentration gas, and the standard curve is stored in the instrument. During the measurement period, the instrument compares the electrical signal generated by the concentration of the gas to be measured with the electrical signal of the standard concentration, and calculates the accurate gas concentration value. Therefore, zero calibration of instruments at any time and regular calibration of instruments are fundamental tasks to ensure accurate measurement of instruments. Whenever the probe is replaced, in addition to the activation time of a certain sensor, the instrument must also be recalibrated. In addition, it is recommended that the instrument respond to the instrument before use to ensure its actual protection.
2. Pay attention to detection interference between various sensors
Usually, each sensor corresponds to a specific test gas, but any toxic gas detector is not absolutely unique. Therefore, when selecting a gas sensor, it should be as close as possible to the detection interference of other gases on the sensor to ensure accurate detection of specific gases.
3. Pay attention to the concentration measurement range of the testing instrument
All types of toxic and harmful gas detectors have their own fixed detection range. Only when the measurement is completed within the measurement range can it be guaranteed. Accurate measurement with instruments. If the measured value is exceeded for a long time, it may cause permanent damage to the sensor.
4. Pay attention to the service life of various detectors
All types of gas detectors have a certain lifespan, that is, lifespan. Generally speaking, in portable instruments, LEL sensors have a long lifespan and can be used for about three years; The lifespan of the photoionization detector is four years or more; Electrochemical specific gas sensors have a relatively short lifespan. Within one to two years; The lifespan of oxygen sensors is the shortest, about one year. The lifespan of electrochemical sensors depends on the dryness of the electrolyte, so if left unused for a long time, it can be extended to lower temperature environments to extend its lifespan. Due to the relatively large size of fixed instruments, the lifespan of sensors is also longer. Therefore, sensors should be tested as much as possible during their service life, and if they fail, please replace them promptly.
