MQ-131 MQ131 Ozone Sensor Oxygen Sensor Gas Sensor Module For Ozone Concentration Exceeded Alarm 10ppm-1000ppm Output MQ 131

Category : Electronic Components & Supplies | Active Components

USD 12.17USD 16.23

MQ-131 MQ131 Ozone Sensor Oxygen Sensor Gas Sensor Module For Ozone Concentration Exceeded Alarm 10ppm-1000ppm Output MQ 131

Description
Specification

Description

Product description:

The gas sensing material used in the MQ131 ozone sensor is a semiconducting metal oxide with a high electrical conductivity in clean air. When ozone is present in the environment in which the sensor is located, the conductivity of the sensor decreases as the concentration of ozone gas in the air increases. The change in conductivity can be converted to an output signal corresponding to the gas concentration using a simple circuit.

The MQ131 ozone sensor has high sensitivity to ozone, and has certain sensitivity to strong oxidizing gases such as chlorine and nitrogen dioxide, and reacts organic interference gas in the opposite direction to ozone.

Features:

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

Application:

It is widely used in household ozone concentration exceeding alarms, industrial ozone concentration exceeding alarms and portable ozone concentration detectors.

Parameter:

Product Type : Semiconductor Gas Sensor
Standard package: bakelite, metal cover
Detection gas: ozone
Detection concentration: 10～1000ppm ozone
Loop voltage Vc: ≤24V DC
Heating voltage VH : 5.0V ± 0.1V AC or DC
Load resistance RL: adjustable
Heating resistance RH : 31 Ω ± 5 Ω (room temperature)
Heating power consumption PH: ≤900mW
Sensitivity S : Rs (in 200ppm O3) / Rs (in air) ≥ 2
Output voltage △Vs : ≥1.0V (in 200ppm O3)
Concentration slope α : ≤ 0.6 ( R10ppm / R100ppm O3)
Temperature, humidity: 20 °C ± 2 °C; 55% ± 5% RH
Standard test circuit: Vc: 5.0V ± 0.1V; VH: 5.0V ± 0.1V
Warm-up time: no less than 48 hours
Oxygen content: 21% (not less than 18%, (oxygen concentration will affect the initial value, sensitivity and repeatability of the sensor, please consult when using at low oxygen concentration)
Life expectancy: 5 years

Note: The figure above shows the basic test circuit for the MQ131 sensor. The sensor requires two voltages to be applied: heater voltage (VH) and test voltage (VC). The VH is used to provide a specific operating temperature for the sensor, either DC or AC. The VRL is the voltage across the load resistor (RL) of the sensor in series. VC is the voltage for testing the load resistor RL and requires a DC power supply.