Low Concentration Ozone Gas Sensor MQ131 Oxygen Detector Industrial Ozone Concentration Alarm

Product Overview

Description

 

Product Description
The gas sensing material used in MQ131 ozone sensor is semiconductor metal oxide with high conductivity in clean air. When there is ozone in the environment where the sensor is located, the conductivity of the sensor decreases with the increase of the concentration of ozone gas in the air. The change of conductivity can be converted into the output signal corresponding to the gas concentration by using a simple circuit.
MQ131 ozone sensor is highly sensitive to ozone, and it is also sensitive to chlorine, nitrogen dioxide and other strong oxidizing gases. It reacts to organic interfering gases in the opposite direction to ozone.

 

Sensor characteristics
The product has good sensitivity to ozone in a wide concentration range, and has the advantages of long life, low cost, simple driving circuit, etc.

 

Main applications
It is widely used in household ozone concentration alarm, industrial ozone concentration alarm and portable ozone concentration detector.

 

 

Part No.			MQ-131L
Sensor Type			Semiconductor
Target Gas			ozone
Detection Range			10~1000ppm(ozone)
Standard Circuit Conditions	Loop Voltage	VC	5.0V±0.1V DC
	Heater Voltage	VH	5V±0.1V AC or DC
	Load Resistance	RL	Adjustable
Sensor character under standard test conditions	Heater Resistance	RH	35Ω±3Ω(room temperature)
	Heater consumption	PH	≤800mW
	Output Voltage	VS	≥1.0V(in 200ppb O3)
	Sensitivity	S	Rs( in 200ppb O3)/Rs( in air)≥2
	Concentration slope	α	≤0.6(R3000ppm/R1000ppmO3)
Standard test conditions	Temp. Humidity		20℃±2℃;55%±5%RH
	Standard test circuit		VH:5V±0.1V;VC:5.0V±0.1V
	Preheat time		Over 48 hours
	O2 content		21%(not less than 18%) O2 concentration effects initial value, sensitivity and repeatability.
Lifespan			10 years