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

Model Number:MQ131 MQ-131
Minimum Order Quantity:1PCS
Delivery Time:5-8 work days
Payment Terms:L/C, D/A, D/P, T/T, Western Union, MoneyGram
Place of Origin:CN
Price:Negotiable
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Location: Shenzhen Guangdong China
Address: Room 3306AB 33rd Floor, SEG Plaza,Huaqiang North Road, Futian District, Shenzhen Guangdong Province 518028
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Product Details

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 VoltageVc5 ± 0.1VAC or DC
Heater VoltageVh5 ± 0.1VAC or DC
Load ResistanceRLAdjustable--
Heater ResistanceRh34 ± 3ΩRoom temperature
Heater Power ConsumptionPh≤ 900mW-
Detection Range-10 - 1000ppbOzone
SensitivitySRs (in air)/Rs (in 200 ppb O₃) ≥ 2--
Output Voltage△Vs≥ 1.0VIn 200 ppb O₃
Concentration Slopeα≤ 0.6-R₅₀₀ ppb/R₁₀₀ ppb O₃
Operating TemperatureTao-20 - 50-
Storage TemperatureTas-20 - 70-
Relative HumidityRH≤ 95%-
Pre - heat Time-≥ 48h-
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



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

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

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