Description: Product description: MP-4 combustible gas sensor uses a multi-layer thick film manufacturing process in miniature A heater and a metal oxide semiconductor gas sensing layer are respectively formed on both sides of the Al2O3 ceramic substrate, and are packaged in a metal case. The conductivity of the sensor changes when there is a detected gas in the ambient air. The higher the concentration of the gas, the higher the conductivity of the sensor. This change in conductivity can be converted to an output signal corresponding to the gas concentration using a simple circuit. Features: This product has good sensitivity to methane in a wide concentration range, and has the advantages of strong anti-interference ability, low power consumption, fast response recovery, good stability, long life, low cost, and simple driving circuit. Application: 1. Combustible gas leakage monitoring device, fire/safety detection system for home, factory and commercial use. 2. Combustible gas leakage alarm, gas leak detector. Parameter: Detection gas: methane, natural gas, biogas Detection concentration: 300 ~ 10000ppm (methane, natural gas) Loop voltage VC: ≤24V DC Heating voltage VH : 5.0V ± 0.1V AC or DC Load resistance RL: adjustable Heating resistor RH: 85Ω ± 15Ω (room temperature) Heating power consumption PH : ≤350mW Sensitive body resistance RS: 1KΩ～20KΩ (in 5000ppm methane) Sensitivity S : Rs (in air) / Rs (in 5000ppm methane) ≥ 5 Concentration slope α: ≤0.6 (R5000ppm/R1000ppm methane) Temperature, humidity: 20 °C ± 2 °C; 55% ± 5% RH Standard test circuit: VC: 5.0V ± 0.1V; VH: 5.0V ± 0.1V Warm-up time: no less than 48 hours Oxygen concentration: 21% (not less than 18%, (oxygen concentration will affect the initial value of the sensor, sensitivity and repeatability, use at low oxygen concentration) Please consult when using) Life expectancy: 10 years Note: The above figure shows the basic test circuit of the MP-4 sensor. The sensor requires two voltages to be applied: heater voltage (VH) and test voltage (VC). The VH is used to provide a specific operating temperature for the sensor, either DC or AC. The VRL is the voltage across the load resistor (RL) of the sensor in series. VC is the voltage for testing the load resistor RL and requires a DC power supply.
Price: 5.21 USD
Location: ShenZhen
End Time: 2024-11-05T09:17:59.000Z
Shipping Cost: 2.99 USD
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Item Specifics
Restocking Fee: No
Return shipping will be paid by: Buyer
All returns accepted: Returns Accepted
Item must be returned within: 30 Days
Refund will be given as: Money back or replacement (buyer's choice)
Brand: Unbranded
MPN: Does not apply
