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Combustible gas sensor

Combustible gas sensor
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MEMS COMBUSTIBLE GAS SENSOR PN: S106Y Product description The MEMS combustible gas sensor uses a unique MEMS process to make a hightemperature resistant micro-heat plate on a Si-based substrate, and uses a self-developed gassensitive material nano-level metal oxide semiconductor material. When the detected gas exists in the ambient air, the conductivity of the sensor changes. The higher the concentration of the gas, the higher the conductivity of the sensor. Using a simple circuit, the change in conductivity can be converted into an output signal corresponding to the gas concentration. Sensor characteristics This product adopts MEMS technology, solid structure, high sensitivity to combustible gas; it has the advantages of small size, low power consumption, high sensitivity, fast response recovery, simple driving circuit, good stability, long life and so on. Detection gas type: Propane (CH4): 0-2000ppm; Features: ➢ High sensitivity to propane (0-2000ppm) ➢ Quick response (~15Sec.) ➢ Very low power consumption (40~45mW) ➢ Ultra-small size (3.8mm × 3.8mm × 1.5mm) ➢ Long life (~ 5 years) ➢ Long-term stability ➢ Reflow soldering possible ➢ Product anti-smoke, anti-alcohol, anti-silicon Main application: ➢ Gas testing in civil, industrial and environmental protection ➢ Internet of Things, wearable d

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1) Warm-up time If the sensor is stored for a long time without power, its resistance will have a reversible drift. Before use, the sensor needs to be preheated to achieve the internal chemical balance. The preheating voltage is consistent with its heating voltage VH. The storage time and corresponding warm-up time are recommended as follows: 1) Sensor calibration The accuracy of the sensor is affected by the difference in reference resistance, sensitivity difference, temperature, humidity, interference gas, aging time and other factors between the sensors. There are nonlinear, hysteresis...

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Package outline:

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Bottom view size drawing (unit: mm): The sensor 2 and 3 pins are connected to the heating circuit, and the 1 and 4 pins are connected to the measurement circuit. On the premise of meeting the electrical performance requirements of the sensor, heating and measurement can share the same power circuit. Measuring circuit Description: VH: DC 3.5V Vc: DC 3.5V RL is the load resistance. To prevent damage to the gas sensor, RL≥10KΩ is recommended.

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Precautions 1 Situations that must be avoided 1.1 Exposure to silicone vapor If organic silicon vapor is adsorbed on the surface of the sensor, the sensitive material of the sensor will be wrapped, inhibiting the sensitivity of the sensor, and it is irreversible. The sensor should not be exposed to the place where silicone adhesive, hair spray, silicone rubber, putty or other silicone-containing plastic additives may exist. 1.2 Highly corrosive environment Exposure of the sensor to high-concentration corrosive gases (such as H2S, SOX, Cl2, HCl, etc.) will not only cause corrosion or damage...

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stored for a long time needs to be energized for a long time before use to make it stable. 2.4 Long-term exposure to extreme environments Regardless of whether the sensor is powered on or exposed to extreme conditions for a long time, such as high humidity, high temperature, or high pollution, the performance of the sensor will be seriously affected. 2.5 Frequent vibration and excessive vibration will cause the lead of the sensitive component to resonate and break. The use of pneumatic screwdrivers/ultrasonic welding during transportation and assembly lines can generate such vibrations. 2.6...

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