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Semiconductor hydrogen gas sensor
Main feature: It has good sensitivity to hydrogen gas over a wide concentration range
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Main Features
l Has good sensitivity to hydrogen gas over a wide concentration range;
l Long lifespan and low cost;
l A simple driving circuit is sufficient;
l Household gas leak alarm;
l Industrial combustible gas alarm;
parameter Instructions detection concentration 100-1000ppm(Hydrogen gas) Circuit voltage (Vc) ≤24V DC Heating voltage (VH) 5.0V±0.2V AcorDC Load resistance (RL) adjustable Heating resistor (RH) 31Ω±3Ω(Room temperature) Heating power consumption (PH) ≤900mW Surface resistance of sensitive body (Rs) 2KΩ-20KΩ(in 1000ppm H2) Sensitivity (S) Rs(in air)/Rs(1000ppmHydrogen gas) ≥ 5 Concentration slope (α) ≤0.6(R5000ppm/R3000ppm CH4) temperature humidity 65%±5%RH Standard Test Circuit Vc:5.0V±0.1V； VH: 5.0V±0.1V； warm-up time Not less than 48 hours
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