VQ631M/2

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Gas sensors play an important role in the detection technology of harmful gas. With the rapid development of gas detection technology, more and more different kinds of gas sensors have came into being. Among them, VQ631M/2 series capacitive gas sensors are widely used in gas detection and alarm systems. This is because VQ631M/2 series capacitive gas sensors have the features of high accuracy, fast response, stability, and low cost.

The VQ631M/2 series capacitive gas sensors are mainly used in household gas leakage alarm system. This device uses a proprietary cost-effective high-integration low-power sensor cell design, the adoption of advanced low-power MCU, ultra-low average operating current of only 5μA, and non-preheating structure, all of which make the VQ631M/2 series capacitive gas sensors very suitable for household gas leakage alarms.

In terms of working principle, VQ631M/2 series capacitive gas sensors are based on the fact that the capacitance of a sensing element changes when it is exposed to the external environment, then the equivalent capacitance of the circuit changes correspondingly. The capacitive gas sensor comprises a sensing element and a compensation capacitor. The sensing element is configured to sense the gas concentration by sensing the changes in the equivalent capacitance of the circuit. When the gas concentration is adjusted by adding or removing the gas, the equivalent capacitance of the circuit changes, which is proportional to the gas concentration. The change in capacitance of the sensing element is then converted into a digital signal and is passed to the MCU via the signal acquisition module, then the MCU processes the signal and provides intelligence output.

The VQ631M/2 series capacitive gas sensors adopt the high-integration of the multi-function core engine for their programmable parameters. Under specific conditions, the sensors will adjust their parameters to meet the various environmental conditions, achieving excellent performance in accuracy and stability. At the same time, it provides self-diagnosis function and self-supervision functions, making the overall performance of the sensor more reliable and stable.

In summary, VQ631M/2 series capacitive gas sensors are widely used in household gas leakage alarm system. The working principle of the sensor is to detect the change in capacitance when exposed to external gas, and convert the change into a digital signal. It features high accuracy, fast response, stability, and self-diagnosis functions. Therefore, it has become popular choice for many gas-sensing applications.

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