NEW MQ137 ammonia gas sensor MQ-137B mq137 module | ABS Sensor

NEW MQ137 ammonia gas sensor MQ-137B mq137 module | ABS Sensor

If you use this series of sensors for the first time to avoid damage caused by sensor welding

Or it is convenient to debug and replace the sensor. Matching options availableSensor porcelain seat.

* High sensitivity to ammonia

* Long service life, low cost

* Simple driver circuit

Application                        

* Household ammonia alarm

* Industrial ammonia leak alarm

* Portable gas detector

Product Model

MQ137

Product Type

Semiconductor gas sensor

Standard package

Bakelite

Gas Detection

Ammonia

Detection concentration

5-500ppmAmmonia

Standard circuit conditions

Loop voltage

Vc

≤24V DC

Heating voltage

VH

5.0V±0.2V ACorDC

Load resistance

RL

Adjustable

Characteristics of gas sensors under standard test conditions

Heating resistance

RH

31Ω ± 3Ω (room temperature)

Heating power consumption

PH

≤900mW

Surface resistance of sensitive body

Rs

2KΩ-15KΩ(in 50ppm NH3)

Sensitivity

S

Rs(in air)/Rs(50ppmNH3)≥3

Concentration slope

α

≤0.6(R100ppm/R50ppmNH3)

Standard test conditions

Temperature and humidity

20℃±2℃;65%±5%RH

Standard test circuit

Vc:5.0V±0.1V;

 VH: 5.0V±0.1V

Warm-up time

No less than 48 hours