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MQ-9

Henan Hanwei Electronics
Part Number MQ-9
Manufacturer Henan Hanwei Electronics
Description Semiconductor Sensor
Published Feb 25, 2015
Detailed Description Henan Hanwei Electronics Co., Ltd www.hwsensor.com MQ-9 Semiconductor Sensor for CO/Combustible Gas Sensitive materia...
Datasheet PDF File MQ-9 PDF File

MQ-9
MQ-9

Overview
Henan Hanwei Electronics Co.
, Ltd www.
hwsensor.
com 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 sensor’s 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 Configuration Application * Domestic gas leakage detector * Industrial gas detector * Portable gas detector Technical Data Basic test loop Model No.
Sensor Type Standard Encapsulation Detection Gas Concentration Loop Voltage Vc Circuit Heater Voltage VH Heater Time TL Load Resistance RL Heater Resistance Character Heater consumption Sensing Resistance Sensitivity RH PH Rs S Slope α Tem.
Humidity Condition Standard test circuit Preheat time MQ-9 Semiconductor Bakelite CO and combustible gas 10-1000ppm CO 100-10000ppm combustible gas ≤10V DC 5.
0V±0.
2V ACorDC（High） 1.
5V±0.
1V ACorDC（Low） 60±1S（High）90±1S（Low） Adjustable 31Ω±3Ω（Room Tem.
） ≤350mW 2KΩ-20KΩ(in 100ppm CO ) Rs(in air)/Rs(100ppm CO)≥5 ≤0.
6(R300ppm/R100ppm CO) 20℃±2℃; 65%±5%RH Vc:5.
0V±0.
1V; VH（High）: 5.
0V±0.
1V； VH（Low）: 1.
5V±0.
1V Over 48 hours performance, suitable RL value is needed: Power of Sensitivity body(Ps): Ps=Vc2×Rs/(Rs+RL)2 Tel: 86-371-67169070/80 Fax: 86-371-67169090 V VR RL VH...


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