MQ-135 (Air Quality Control Gas Sensor) Original price was: ₨550.00.Current price is: ₨500.00.
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MQ-3 (Alcohol ethanol Gas sensor) Original price was: ₨400.00.Current price is: ₨360.00.

MQ-137 (Ammonia (NH3) Sensor Module)

Original price was: ₨5,500.00.Current price is: ₨5,150.00.

Sensitive material of MQ-137 gas sensor is SnO2, which acts as lower conductivity in clean air. When the target combustible gas exist, the sensor’s conductivity is more higher along with the gas concentration rising. Please use simple electrocircuit, Convert change of conductivity to correspond output signal of gas concentration.
MQ137 gas sensor has high sensitivity to Ammonia, also to other organic amine. The sensor could be used to detect different gases which are contained Ammonia. It is a low cost module and suitable for different environmental protective application.

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Description

Specifications:  

  • Model No.: MQ137
  • Sensor Type: Semiconductor
  • Standard Encapsulation: Bakelite (Black Bakelite)
  • Detection Gas: Ammonia
  • Concentration: 5-500ppm (Ammonia)

CIRCUIT:

  • Loop Voltage(Vc): ≤24V DC
  • Heater Voltage(VH): 5.0V±0.2V AC or DC
  • Load Resistance(RL): Adjustable

CHARACTER:

  • Heater Resistance(RH): 31Ω±3Ω Room Temp
  • Heater consumption(PH): ≤900mW
  • Sensing Resistance(Rs): 2KΩ-15KΩ(in 50ppm NH3)
  • Sensitivity(S): Rs(in air)/Rs(5000ppm CH4)≥5
  • Slope(α): ≤0.6(R100ppm/R50ppm NH3)

CONDITION:

  • Tem. Humidity: 20℃±2℃;65%±5%RH
  • Standard test circuit: Vc:5.0V±0.1V; VH: 5.0V±0.1V
  • Preheat time: Over 48 hours
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