Toxic and harmful gas detectors are also used in the same way as other analytical testing instruments. They are measured using a relatively simple method: First, a zero gas and a standard concentration of gas are used to calibrate the instrument. The calibration curve is 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 the accurate gas concentration value.
Therefore, zero calibration of the instrument at any time, and regular calibration of the instrument is an indispensable task to ensure accurate measurement of the instrument. It should be noted that at present, many gas detectors can replace the detection sensors. However, this does not mean that one detector can be equipped with different detector probes at any time.
Whenever a probe is replaced, the instrument must be recalibrated in addition to a certain sensor activation time. In addition, it is recommended to respond to the standard gas of the instrument before using it to ensure that the instrument really protects the instrument. Shanghai Wusi Instruments Co., Ltd. makes the following analysis:
1) Prevent the gas detector from falling or being violently shaken from a height;
2) It should be used in places where there is no corrosive gas, smoke, dust and rain;
3) Do not allow the gas detector to constantly contact high concentrations of gas with a concentration higher than the detection range. Do not collide and disassemble the sensor. Otherwise, the working life of the sensor will be lost.
4) If the machine has no reaction for a long time, please turn off the power and restart;
5) In order to ensure the measurement accuracy, the machine should be calibrated regularly, and the verification period must not exceed one year;
6) Under the normal working environment, the working life of the sensor is more than two years;
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