The gas detector is a sensor that can sense gas, petroleum gas and other gases. It is also widely used in our lives. The editor of this article will introduce the gas detector to you in detail.
Working principle of gas detector
Combustible gas detectors use high-quality gas sensors. The microprocessor combined with precision temperature sensors can intelligently compensate for the drift of gas-sensitive components. The environment has a wide range of adaptability and stable operation. No debugging is required. The ceiling installation method is used. The installation is simple, the wiring is convenient and extensive. It is used for safety monitoring in homes, hotels, apartments and other places where flammable gas exists. It can detect natural gas, liquefied petroleum gas and artificial gas. The working voltage of the detector is DC power supply. After the alarm, it can output a pair of relay passive contact signals (normally open, normally closed can be jumper setting), used to control ventilation equipment or provide normally open or normally closed alarm contacts for other equipment. When the concentration of combustible gas in the environment reaches the set threshold, it can send out an audible and visual alarm signal, and can output the relay passive contact signal. When the concentration of combustible gas in the surrounding environment drops below the response threshold, the detector in the alarm state will automatically return to normal working state.
Features of gas detector
1. Can sense gas, natural gas, liquefied petroleum gas.
2. The temperature-sensitive special li type sensor does not produce passivation, low power consumption, long life and strong stability.
3. Intrinsically safe design, single-chip intelligent fuzzy processing technology, automatically adjust the working state of the sensor, effectively prevent false alarms and omissions.
4. Normal temperature semiconductor sensor of nanotechnology does not need heating, fault self-check and automatic reset.
5. Power supply (220V / 110V), suitable for various domestic and overseas power supply.
6. The transmitter module and the circuit board are integrated, and the code matching method can be used with the host.
7. Independent use, wireless networking, at the same time can drive the exhaust fan, solenoid valve, on-site sound and light alarm, three parallel, safe and reliable.
8. Directly drive the exhaust fan or solenoid valve.
Installation and use of gas detector
1. First determine the specific gravity of combustible gas and air, and then install the detector at a suitable location within 1.5M of the gas source radius: A. Gas: lighter than air, floating in high places; B. Natural gas: lighter than air, floating in High place; C. LPG: heavier than air, deposited in low places;
2. After the power is turned on, the detector beeps, and the power light is always on, and the function light flashes green. It turns off in about 2 minutes, indicating that it has entered the alert state. When a gas leak is detected, it will emit a "beep, beep" alarm sound, and the function light will flash red. After the alarm is eliminated, it will automatically enter the alert state;
3. If the sensor fails, the detector will emit a long beep and the function light will be steady yellow. After the fault is removed, it will automatically enter the alert state.
From the working principle of the gas detector to the functional characteristics, and then to the installation and use, you must have a general understanding of the gas detector. I hope that everyone will be able to apply it to actual life after understanding.
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