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MQ131 MQ-131 Ozone Semiconductor - type Gas Sensor For Domestic Ozone Concentration Alarms

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MQ131 MQ-131 Ozone Semiconductor - type Gas Sensor For Domestic Ozone Concentration Alarms

Model Number : MQ131 MQ-131

Place of Origin : CN

MOQ : 1PCS

Price : Negotiable

Payment Terms : L/C, D/A, D/P, T/T, Western Union, MoneyGram

Supply Ability : 5000PCS

Delivery Time : 5-8 work days

Packaging Details : Standard packaging

Operating Temperature : -20 - 50 ℃

Storage Temperature : -20 - 70 ℃

Relative Humidity : ≤ 95%

Pre - heat Time : ≥ 48H

Standard Test Temperature : 20 ± 2℃

Standard Test Humidity : 55 ± 5%

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MQ131 Ozone Semiconductor - type Gas Sensor For Domestic Ozone Concentration Alarms

Sensitive Material:

The sensitive material of the MQ131 gas sensor is WO₃, which has lower conductivity in clean air. When ozone gas is present, the sensor's conductivity decreases as the gas concentration increases.

Features

  • It has good sensitivity to ozone in a wide range.
  • It has the advantages of long lifespan, low cost, and a simple drive circuit.
  • It has fast response and recovery characteristics and high sensitivity.
  • It has long - term working stability.

Working Principle:

Users can convert the change of conductivity into an output signal corresponding to the gas concentration through a simple circuit. The sensor is also sensitive to strong oxidizing gases such as Cl₂ and NO₂, and reacts in the opposite direction to organic interference gases compared with ozone.

Application Fields:

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

Parameter

Symbol

Value

Unit

Remarks
Loop Voltage Vc 5 ± 0.1 V AC or DC
Heater Voltage Vh 5 ± 0.1 V AC or DC
Load Resistance RL Adjustable - -
Heater Resistance Rh 34 ± 3 Ω Room temperature
Heater Power Consumption Ph ≤ 900 mW -
Detection Range - 10 - 1000 ppb Ozone
Sensitivity S Rs (in air)/Rs (in 200 ppb O₃) ≥ 2 - -
Output Voltage △Vs ≥ 1.0 V In 200 ppb O₃
Concentration Slope α ≤ 0.6 - R₅₀₀ ppb/R₁₀₀ ppb O₃
Operating Temperature Tao -20 - 50 ℃ -
Storage Temperature Tas -20 - 70 ℃ -
Relative Humidity RH ≤ 95 % -
Pre - heat Time - ≥ 48 h -
Standard Test Temperature - 20 ± 2 ℃ -
Standard Test Humidity - 55 ± 5 % -
Oxygen Content - ≥ 18 %

21% is optimal, which will affect the initial value,

sensitivity and repeatability of the sensor

MQ131 MQ-131 Ozone Semiconductor - type Gas Sensor For Domestic Ozone Concentration Alarms


Product Tags:

MQ131 ozone gas sensor

      

semiconductor gas sensor for ozone

      

domestic ozone concentration alarm sensor

      
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