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  • Address: 469 Xinsheng Road, Gaoxin District, Chengdu, China
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Winsen Nh3 Sensor MQ137 Specification:
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 ACorDC
Load Resistance: RL Adjustable
Character:
Heater Resistance:RH31Ω±3Ω(Room Tem.)
Heater consumption:PH≤900mW
Sensing Resistance:Rs2KΩ-15KΩ(in 50ppm NH3 )
Sensitivity: S Rs(in air)/Rs(5000ppm CH4)≥5
Slope: α ≤0.6(R100ppm/R50ppm NH3)
Condition:
Tem. Humidity: 20°C±2°C;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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Winsen Nh3 Sensor MQ137- A&S Automation Co., Ltd

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