Precautions for using electrochemical sensors of gas detectors
1. Please use within the scope allowed by the usage specifications:
2. When measuring gas sensitivity, please conduct it in a clean atmosphere;
3. When the measured gas is directly blown to the ventilation surface of the sensor for measurement, the sensitivity to the gas will be very high. When measuring gas sensitivity, avoid measuring gas blowing from the front;
4. It is forbidden to break or bend the pins;
5. The gas ventilation surface should not be blocked or contaminated. Sometimes blockage of the holes is the cause of low sensitivity;
6. No excessive impact or vibration;
7. Please do not use it if the shell is damaged;
8. It will be slow to return to the initial state after long-term use in a high-concentration gas environment;
9. The sensor should avoid contact with organic solvents, coatings, chemicals, oils and high-concentration gases;
10. Electrolyte leakage will cause damage, please do not disassemble the sensor at will;
11. When the sensor is stored, the working electrode and reference electrode should be in a short-circuit state;
12. It must be aged for no less than 24 hours before use, and soldering is prohibited during installation.
Confirm the type and concentration range of gas to be detected:
a. If there are mostly methane and other less toxic alkanes, it is undoubtedly most appropriate to choose the LEL detector. This is not only because the LEL detector has a simple principle and is widely used, but it also has the characteristics of convenient maintenance and calibration. B Humidity sensor probe, , Stainless steel electric heating tube PT100 sensor, , Cast aluminum heater, Heating ring Fluid solenoid valve
b. If toxic gases such as carbon monoxide and hydrogen sulfide are present, a specific gas detector must be selected first to ensure the safety of workers.
c. If there are more organic toxic and harmful gases, considering that the concentration that may cause human poisoning is low, such as aromatic hydrocarbons, halogenated hydrocarbons, ammonia (amines), ethers, alcohols, lipids, etc., you should choose the one introduced in the previous chapter. Do not cope with photoionization detectors using LEL detectors as this may result in casualties.
If the gas types cover the above categories of gases, choosing a composite gas detector may achieve twice the result with half the effort.
