GM-802B Ammonia Gas Sensor

The MEMS ammonia gas sensor is composed of a Si-based micro-hot plate made of MEMS technology and a metal-oxide-semiconductor material with low conductivity in clean air. When the detected gas exists in the ambient air, the conductivity of the sensor changes. The higher the concentration of the gas, the higher the conductivity of the sensor. The change in conductivity can be converted into an output signal corresponding to the gas concentration using a simple circuit.

share

Related Products

 
 

Sensor characteristics
This product adopts MEMS technology, with firm structure and high sensitivity to smoke and propane; It has the advantages of small size, low power consumption, high sensitivity, fast response recovery, simple driving circuit, good stability and long service life.


Main application
It is widely used in gas detection of refrigerators, ammonia leakage of refrigerators and ventilation control of agricultural breeding.


Technical indicators

Product model

GM-802B

product type

MEMS ammonia gas sensor

Standard package

Ceramic packaging

detect gas

Ammonia, etc

Detection concentration

1ppm~300ppm(NH3)

Standard circuit conditions

Loop voltage

VC

≤24V DC

Heating voltage

VH

2.0V±0.1V AC or DC

Load resistance

RL

可调

Gas sensor characteristics under standard test conditions

Heating resistance

RH

80Ω±20Ω(room temperature)

Heating power consumption

PH

≤45mW

sensitive body
resistance

RS

1KΩ~30KΩ(in 50ppm NH3)

Sensitivity

S

Ro(in air)/Rs(in 50ppmNH3)≥3

Concentration slope

α

≤0.9(R200ppm/R50ppmNH3)

Standard Test Conditions

temperature humidity

20℃±2℃;55%±5%RH

Standard Test Circuit

VC:5.0V±0.1V;
  V:2.0V±0.1V


Note: Product parameters are subject to change without prior notice

production workshop

 

patent certificate

You can contact us through the online message and online customer service on the right, or you can call our national service hotline: 0371-60932951.

 

our service: