ShenzhenYijiajie Electronic Co., Ltd.
| 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 |
| Detection Range | 5 - 500 ppm NH₃ |
| Standard Circuit Conditions | ≤ 24 V DC |
| Heater Voltage (Vh) | 5.0 V ± 0.1 V AC or DC |
| Heater Resistance (Rh) | 29 Ω ± 3 Ω |
| Heater Consumption (Ph) | ≤ 900 mW |
| Operating Temperature | - 10℃ - 45℃ |
| Model Number | MQ137 MQ-137 |
| Place of Origin | CN |
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Product Specification
| 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 |
| Detection Range | 5 - 500 ppm NH₃ | Standard Circuit Conditions | ≤ 24 V DC |
| Heater Voltage (Vh) | 5.0 V ± 0.1 V AC or DC | Heater Resistance (Rh) | 29 Ω ± 3 Ω |
| Heater Consumption (Ph) | ≤ 900 mW | Operating Temperature | - 10℃ - 45℃ |
| Model Number | MQ137 MQ-137 | Place of Origin | CN |
| High Light | MQ137 semiconductor gas sensor ，NH₃ gas alarm sensor ，domestic gas sensor with warranty | ||
MQ137 Semiconductor Gas Sensor For Domestic NH₃ Gas Alarms
Working Principle:
The sensitive material SnO₂ of the MQ137 gas sensor has lower conductivity in clean air. When ammonia gas is present, the sensor's conductivity increases with the rise of gas concentration. Users can convert the change of conductivity into a corresponding output signal of gas concentration through a simple circuit.
Applications:
| Parameter | Symbol | Value | Unit | Remarks |
|---|---|---|---|---|
| Detection Range | - | 5 - 500 | ppm | For NH₃ |
| Standard Circuit Conditions (Loop Voltage) | Vc | ≤ 24 | V DC | - |
| Heater Voltage | Vh | 5.0 V ± 0.1 V | - | AC or DC |
| Load Resistance | Rl | Adjustable | - | - |
| Heater Resistance | Rh | 29 Ω ± 3 Ω | - | At room temperature |
| Heater Consumption | Ph | ≤ 900 | mW | - |
| Sensitivity | S | Rs (in air)/Rs (50 ppm NH₃) ≥ 2 | - | - |
| Output Voltage | △Vs | ≥ 0.5 | V | In 50 ppm NH₃ |
| Concentration Slope | α | ≤ 0.6 | - | R₂₀₀ ppm/R₅₀ ppm NH₃ |
| Standard Test Temperature | - | 20℃ ± 2℃ | - | - |
| Standard Test Humidity | - | 55% ± 5% | RH | - |
| Pre-heat Time | - | Over 48 | hours | - |
| Operating Temperature | - | -10 - 45 | ℃ | - |
| Storage Temperature | - | -20 - 70 | ℃ | - |
Company Details
Business Type:
Manufacturer,Trading Company
Year Established:
2006
Total Annual:
900000-1000000
Employee Number:
50~80
Ecer Certification：
Verified Supplier
Yijiajie Electronics is a full range of silicon pressure sensors from the United States, FREESCALE/, GE, MEAS, SMI, and a full range of sensing and control products from the United States pressure, temperature and humidity, gas flow, current, Hall effect, etc., Japan HAMAMATSU flame, UV sensors, ph... Yijiajie Electronics is a full range of silicon pressure sensors from the United States, FREESCALE/, GE, MEAS, SMI, and a full range of sensing and control products from the United States pressure, temperature and humidity, gas flow, current, Hall effect, etc., Japan HAMAMATSU flame, UV sensors, ph...
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