
MQ137 Ammonia Gas Sensor
SKU: ENV-01216
MQ137 Ammonia Gas Sensor (NH3 Gas Sensor). Key specifications: Model: MQ137; Sensor Type: Semiconductor; Standard Encapsulation: Bakelite, Metal cap; Target Gas: Ammonia Gas(NH3); Detection range: 5~500ppm NH3.
- Model
- MQ137
- Sensor Type
- Semiconductor
- Standard Encapsulation
- Bakelite, Metal cap
- Target Gas
- Ammonia Gas(NH3)
- Detection range
- 5~500ppm NH3
- Loop Voltage Vc
- 5.0V+/-0.1V DC
- Heater Voltage VH
- 5.0V+/-0.1V AC or DC
- Load resistance RL
- Adjustable
- Heater Resistance RH
- 30ohm+/-3ohm (room temp.)
- Heater consumption PH
- <=950mW
- Sensitivity S
- Rs(in air)/Rs(50ppmNH3)>=2
- Output Voltage
- >=0.5V (in 50ppm NH3)
- Concentration Slope
- <=0.6(R200ppm/R50ppmNH3)
- Preheat time
- Over 48 hours
- Size
- dia19x24.2mm








