A Brief Discussion on Precautions for the Use of Combustible Gas Detectors
1. Pay attention to regular calibration and testing.
Toxic and harmful gas detectors, like other analytical detectors, also measure using comparative methods. Firstly, calibrate the installation with zero gas and standard concentration gas, store the standard curve in the instrument for measurement, compare the electrical signal generated by the gas concentration in the measurement with the electrical signal of the standard concentration, and calculate the accurate gas concentration value. Therefore, calibrating the instrument to zero at any time and regularly calibrating the instrument is a necessary task to ensure accurate measurement of the instrument.
At present, many gas detectors can replace their detection sensors, but this does not mean that other detectors can be used at any time. When changing the probe at any time, not only does it require a specific sensor activation time, but it also requires recalibration and installation. In addition, before using various instruments, response tests should be conducted on the instruments to ensure that they are effectively maintained.
2. Pay attention to the detection interference between various sensors.
Generally speaking, each sensor corresponds to a specific sensing gas, but random gas detectors cannot be a special effect. Therefore, when choosing a gas sensor, it is important to understand as much as possible the detection intervention of other gases on the sensor in order to correctly detect specific gases.
3. Pay attention to the service life of various sensors.
All types of gas sensors have a certain lifespan, that is, lifespan. Generally speaking, LEL sensors on portable devices have a long lifespan, typically around 3 years of use; The lifespan of photoionization detectors is over 4 years. Electrochemical specific gas sensors have a relatively short lifespan, typically 1 to 2 years; The lifespan of oxygen sensors is the shortest, about one year. The lifespan of electrochemical sensors depends on the dryness of the electrolyte. If not used for a long time, they can still be sealed in the environment at low temperatures, extending their lifespan to a certain extent. Fixed instruments have a relatively large volume and longer sensor lifespan. Therefore, always check the sensor and use it within its effective period as much as possible. If there is a problem, please replace it in a timely manner.
4. Pay attention to the measurement range of concentration of testing equipment
Various toxic and harmful gas detectors have a certain detection range. Measurement must be completed within the measurement range in order to be accurate. If the measurement exceeds the measurement range, the sensor may be permanently damaged.
