Master toxicgas detectorand maintenance methods. Whenever the probe is replaced, the instrument must be recalibrated in addition to a certain amount of sensor activation time. In addition, it is recommended to test the response of standard gases before using various instruments to ensure that the instruments are truly protective.
Use and Maintenance of Toxic gas detectors: Pay attention to frequent calibration and detection.
Toxic and harmfulgas detectorAs with other analytical and testing instruments, the relative comparison method is used: first, the instrument is calibrated with zero gas and the standard concentration of gas, and the standard curve is obtained and stored in the instrument. During the measurement process, the instrument compares the electrical signal generated by the measured gas concentration with the electrical signal of the standard concentration to calculate the accurate gas concentration. Therefore, it is necessary to zero the instrument at any time and calibrate the instrument regularly to ensure the accuracy of instrument measurement. It should be noted that many gas detectors can replace the detection sensor, but this does not mean that one detector can be equipped with different detector probes at any time. Simultaneous interpretation of interference between different sensors.
In general, each sensor corresponds to a specific detection gas, but eithergas detectorNone of them can be absolute special effects. Therefore, when choosing a gas sensor, you should try to understand the detection interference of other gases on the sensor to ensure its accurate detection of specific gases.
Pay attention to the lifespan of various sensors:
variousGas sensorBoth have a certain service life, that is, the service life. Generally speaking, in portable instruments, LEL sensors have a longer lifespan and can be used for about 3 years; The lifespan of the photoionization detector is 4 years or more; The lifespan of electrochemical specific gas sensors is relatively short, generally 1 to 2 years; The oxygen sensor has the shortest lifespan, about 1 year a year. The lifespan of an electrochemical sensor depends on how dry the electrolyte is, and if it is not used for a long time, sealing it in a low-temperature environment can extend its life. Due to the relatively large size of the fixed instrument, the service life of the sensor is also relatively long. Therefore, sensors must be detected at all times, used within the validity period of the sensor as much as possible, and replaced in time in case of failure.
Note the concentration measurement range of the detector:
All kinds of toxic and harmfulgas detectorAll have a fixed detection range. Accurate measurements can only be made when the measurement is completed within the measurement range. If the measured value is out of the measurement range for an extended period of time, it can cause permanent damage to the sensor. For example, if the LEL detector is inadvertently used in an environment with more than 100% LEL, it may completely burn out the sensor.
The above is correctToxic gas detectorsAnalysis using maintenance methods, toxicgas detectorWorking at high concentrations for long periods of time can also cause damage.