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MQ135 gas sensor for air quality control
MQ135 gas sensor for air quality control

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MQ-135 original manufacturer
Listed company in Shenzhen
Fast delivery and service
Small order acceptable
Competitive price

 

MQ135  Semiconductor Sensor for Air Quality Control

Sensitive material of MQ135 gas sensor is SnO2, which with lower conductivity in clean air. When the target combustible gas exist, The sensors 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.

MQ135 gas sensor has high sensitity to Ammonia, Sulfide and Benze steam, also sensitive to smoke and other harmful gases. It is with low cost and suitable for different application.

Character                                            Configuration                                                                                                   

* Good sensitivity to Harmful gases in wide range                                                 

* High sensitivity to Ammonia, Sulfide and Benze                                      

* Long life and low cost                                          

* Simple drive circuit

Application                        

* Domestic air pollution detector

* Industrial air pollution detector

* Portable air pollution detector

 

 

 

Technical Data                                      Basic test loop

Model No.

MQ135

Sensor Type

Semiconductor

Standard Encapsulation

Bakelite (Black Bakelite)

Detection Gas

Ammonia, Sulfide, Benze steam

Concentration

10-10000ppm
(Ammonia, Benze, Hydrogen)

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±3ΩRoom Tem.

Heater consumption

PH

≤900mW

Sensing Resistance

Rs

2KΩ-20KΩ(in 100ppm NH3 )

Sensitivity

S

Rs(in air)/Rs(100ppm NH3)≥5

Slope

α

≤0.6(R100ppm/R50ppm NH3)

Condition

Tem.  Humidity

20±265%±5%RH

Standard test circuit

Vc:5.0V±0.1V

    VH: 5.0V±0.1V

Preheat time

Over 48 hours

 

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