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The use of gas detector
2024-10-12
2. When you get a new toxic gas detector, you must carefully read the instruction manual and install the steps of the instruction manual to operate. You must not press it at will without understanding the meaning of the operation menu and modify the internal data at will. When you don't know how to operate the required function, pay attention to the operation process of this function in the manual.
2. Daily maintenance and maintenance needs attention, because it is toxicGas detectorMany of them are electrochemical sensors with a fixed amount of drift every month, so it is necessary to make a good calibration plan and calibrate on time.
The calibrated equipment needs to be used in accordance with the specified requirements, such as the standard gas in the calibration equipment. The use of standard gas must be safe operation, flow, pressure must be controlled and adjusted. After the instrument is used, the sensor needs to be restored in a clean air environment, especially the detector absorbed by the pump. More clean air should be pumped to replace the gas path and sensor gas chamber of the gas detector after the toxic gas is measured, and the sensor gas chamber should be shut down after 2-3 minutes of full replacement. The purpose of this is also to protect the service life of the internal gas circuit and sensors of the instrument.
3. Toxic gas detector is divided into portable and fixed, portable toxic gas detector is relatively simple to use, but the fixed toxic gas detector in use also involves the installation position, circuit wiring problems.
The installation position needs to determine the height according to the specific gravity of the gas. This specific gravity problem mainly means that the gas we are testing is compared with the specific gravity of the air. If it is heavier than the air, we need to install it off the ground.30-60cm height distance, lighter than the proportion of air we should be installed above the leak point or the highest position in the room. If the specific gravity is close to the air, look at the position of the leakage source parallel to it or choose the human breathing height to install it. For another problem, the circuit wiring needs to pay attention to the positive and negative poles of the power supply. The power supply needs to use DC24V DC power supply, and the line uses 3-core 2.5 square meter mm shielded wire.
4. The service life of the toxic gas detector should be replaced in time once it expires. The sensor life of the toxic gas detector according to the standard general electrochemical principle is two years.
5. When using a toxic gas detector, pay attention to whether the measuring range of the machine is appropriate. If the concentration of the gas to be measured exceeds the maximum range of the sensor, working for a long time in this environment will damage the sensor, resulting in no response to the measurement, or the problem of large zero drift.
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