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Hydrogen gas sensor

Hydrogen gas sensor
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MEMS hydrogen sensor PN：S1017Y Description The MEMS combustible gas sensor uses a unique MEMS process to make a high-temperature resistant microhot plate on a Si-based substrate, and uses a self-developed gas-sensing 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, has a solid structure and 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 and long life. Detection gas type: Hydrogen: 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 is possible Product anti-smoke, anti-alcohol, anti-silicon main application: Gas detection in civil, industrial and environmental protection Internet of Things, wearable devices Smart hom

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1) Sensor calibration Sensor accuracy is affected by factors such as the difference in reference resistance, sensitivity, temperature, humidity, interfering gas, and aging time between sensors. There are nonlinear, hysteretic, and non-repeatable operating characteristics between its input and output. Therefore, for absolute concentration measurement, it must be calibrated regularly (single-point/multi-point calibration can be performed within the full range) to ensure the accurate transmission of the value, and the relative measurement does not require calibration. 2) The sensitive...

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>m view size chart (unit: mm): 0,05 Pins 2 and 3 of the sensor are connected to the heating circuit, and pins 1 and 4 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.

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Measuring circuit illustrate： VH: DC 3.5V V c: DC 3.5V RL is the load resistance. To prevent damage to the gas sensor, it is recommended that RL≥10KΩ. Precautions 1 Situations that must be avoided 1.1 Exposure to silicone vapor If silicone vapor is adsorbed on the surface of the sensor, the sensitive material of the sensor will be wrapped up, suppressing the sensitivity of the sensor and irrecoverable. The sensor should avoid being exposed to the places where silicone adhesive, hair spray, silicone rubber, putty or other silicon-containing plastic additives may exist. 1.2 Highly corrosive...

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2.2 In high-concentration gas, no matter whether the sensor is energized or not, long-term placement in highconcentration gas will affect the sensor characteristics. 2.3 Long-term storage If the sensor is stored for a long time without being energized, its resistance will produce a reversible drift. This drift is related to the storage environment. turn off. The sensor should be stored in a sealed bag with clean air and no silicone. Sensors that have been stored for a long time need to be energized for a long time before being used to stabilize them. 2.4 Long-term exposure to extreme...

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