Price: 1
Brand Name: Winsen
Model Number: MQ9
Country/Region: China
Post Date: Mar 29,2012

Product Description: MQ9 CO and CNG LPG gas sensor


MQ-9  Semiconductor Sensor for CO/Combustible Gas

Sensitive material of MQ-9 gas sensor is SnO2, which with lower conductivity in clean air. It make detection by method of cycle high and low temperature, and detect CO when low temperature (heated by 1.5V). The sensors conductivity is more higher along with the gas concentration rising. When high temperature (heated by 5.0V), it detects Methane, Propane etc combustible gas and cleans the other gases adsorbed under low temperature. Please use simple electrocircuit, Convert change of conductivity to correspond output signal of gas concentration.

MQ-9 gas sensor has high sensitity to Carbon Monoxide, Methane and LPG. The sensor could be used to detect different gases contains CO and combustible gases, it is with low cost and suitable for different application.

Character                                                                                                                                               

* Good sensitivity to CO/Combustible gas                                               

* High sensitivity to Methane, Propane and CO                                      

* Long life and low cost                                          

* Simple drive circuit

Application                        

* Domestic gas leakage detector

* Industrial gas detector

* Portable gas detector

Technical Data                                                                          

Model No.

MQ-9

Sensor Type

Semiconductor

Standard Encapsulation

Bakelite

Detection Gas

CO and combustible gas

Concentration

10-1000ppm CO

100-10000ppm combustible gas

Circuit

Loop Voltage

Vc

≤10V DC

Heater Voltage

VH

 5.0V±0.2V ACorDCHigh

1.5V±0.1V ACorDCLow

Heater Time

TL

60±1SHigh90±1SLow

Load Resistance

RL

Adjustable

Character

Heater Resistance

RH

31Ω±3ΩRoom Tem.

Heater consumption

PH

≤350mW

Sensing Resistance

Rs

2KΩ-20KΩ(in 100ppm CO )

Sensitivity

S

Rs(in air)/Rs(100ppm CO)≥5

Slope

α

≤0.6(R300ppm/R100ppm CO)

Condition

Tem. Humidity

20±265%±5%RH

Standard test circuit

Vc:5.0V±0.1V

VHHigh: 5.0V±0.1V

VHLow: 1.5V±0.1V

Preheat time

Over 48 hours

Supplier Details:

Henan Hanwei Electronics Co., Ltd.

Sales:Ms. Angel Ms

Contact Phone:86-371-67169080

Main Products:Sensors

Business type:Manufacturer

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User Reviews: MQ9 CO and CNG LPG gas sensor