Winsen MQ137 Ammonia Gas Sensor - 5-500 ppm NH₃ Detection, SnO₂ Semiconductor
The Winsen MQ137 is a semiconductor ammonia (NH₃) gas sensor module with a detection range of 5–500 ppm, operating on a 5V DC/AC supply. It is designed for integration into gas alarms, leakage detectors, and portable monitoring systems compatible with standard microcontroller interfaces.
Features
- Semiconductor SnO₂ sensing element for ammonia (NH₃) detection.
- Wide detection range from 5 to 500 ppm.
- Operates on 5.0 V DC/AC with low-power heater consumption.
- High sensitivity and stable performance for continuous monitoring.
- Also responsive to organic amines like trimethylamine.
Out of stock
The Winsen MQ137 Ammonia Gas Sensor utilizes a tin dioxide (SnO₂) semiconductor sensing element. In clean air, the sensor’s conductivity is low. Upon exposure to ammonia gas, the conductivity increases proportionally to the gas concentration, enabling measurement through a simple signal conditioning circuit.
Designed for reliable operation in standard conditions, the sensor features a low-power heater to maintain optimal sensing temperature. Its robust construction and stable output make it suitable for integration into safety-critical monitoring systems, from residential alarms to industrial leak detection setups.
Additional Information
| Weight | 0.008 kg |
|---|---|
| Dimensions | 8 × 10 × 3 cm |
