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Categories | Gas Sensor |
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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% |
Company Info. |
ShenzhenYijiajie Electronic Co., Ltd. |
Verified Supplier |
View Contact Details |
Product List |
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
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 |
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