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MQ131

Henan Hanwei
Part Number MQ131
Manufacturer Henan Hanwei
Description Semiconductor Sensor for Ozone
Published Feb 3, 2014
Detailed Description Henan Hanwei Electronics Co., Ltd www.hwsensor.com MQ131 Semiconductor Sensor for Ozone Sensitive material of MQ131 ga...
Datasheet PDF File MQ131 PDF File

MQ131
MQ131

Overview
Henan Hanwei Electronics Co.
, Ltd www.
hwsensor.
com MQ131 Semiconductor Sensor for Ozone Sensitive material of MQ131 gas sensor is SnO2, which with lower conductivity in clean air.
When Ozone gas exists.
The sensor’s 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.
MQ131 gas sensor has high sensitity to Ozone, also sensitive to CL2, NO2, etc.
Character * Good sensitivity to Ozone in wide range * High sensitivity to Ozone * Long life and low cost * Simple drive circuit Application * Domestic Ozone concentration overload Detector * Industrial Ozone concentration overload Detector * Portable Ozone concentration overload Detector Configuration Technical Data Model No.
Sensor Type Standard Encapsulation Detection Gas Concentration Loop Voltage Circuit Heater Voltage Load Resistance Heater Resistance Heater Character consumption Sensing Resistance Sensitivity Slope Vc VH RL RH PH Rs S α MQ131 Semiconductor Bakelite (Black Bakelite) Ozone 10-1000ppm Ozone ≤24V DC 5.
0V±0.
2V AC or DC Basic test loop Vc VRL RL VH GND Adjustable The above is basic test circuit of the sensor.
31Ω±3Ω（Room Tem.
） ≤900mW 50KΩ-500KΩ(in 50ppm O3) Rs(in air)/Rs(in 50ppm O3)≥3 (R50ppm/R10ppm O3) 20℃±2℃；65%±5%RH Vc:5.
0V±0.
1V； VH: 5.
0V±0.
1V Over 48 hours 2 2 The sensor need to be put 2 voltage, heater voltage （VH） and test voltage （VC） .
VH used to supply certified working temperature to the sensor, while VC used to detect voltage (VRL) on load resistance （RL）whom is in series with sensor.
The sensor has light polarity, Vc need DC power.
VC and VH could use same power circuit with precondition to assure performance of sensor.
In order to make the sensor with better performance, suitable RL value is needed: Tem.
Humidity Condition Standard test circuit Preheat time Power of Sensitivity body(Ps): Ps=Vc ×Rs/(Rs+RL) Resistance of sensor(Rs): Rs=(Vc/VRL-1)×RL Tel: 86-...


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