MQ-137 Ammonia Gas Detection Sensor
The MQ137 Ammonia (NH3) Gas Sensor is tailor-made for NH3 gas detection tasks, serving in NH3 gas alarms, industrial NH3 gas leakage alarms, and portable NH3 gas detectors. Crafted with a sensitive SnO2 material, the sensor demonstrates lower conductivity in clean air. However, upon encountering NH3 gas, its conductivity escalates in direct correlation with increasing gas concentrations. This conductivity shift can be translated into an output signal representing the gas concentration through a straightforward circuit setup. Renowned for its heightened sensitivity to NH3 gas, the MQ137 sensor is adept at monitoring organic amines like trimethylamine and cholamine. Furthermore, its capability extends to detecting various gases, rendering it a versatile and economical choice for an extensive array of applications necessitating gas detection capabilities.
Features
- You can use it as both digital sensors and analog sensors.
- This sensor operates in an analog voltage range of 0V to 5V. In the case of digital voltages, the output voltage is either 0 or 5V.
- It has high sensitivity to ammonia and organic amines.
- It provides a stable operation along with fast response.
- You can change the digital pin sensitivity by connecting a potentiometer and varying its resistance.
- It provides a feature of preheating duration over 24 hours.
Specification:
Model | MQ137 | ||
Sensor Type | Semiconductor | ||
Standard Encapsulation | Bakelite, Metal cap | ||
Target Gas | Ammonia Gas(NH3) | ||
Detection range | 5~500ppm NH3 |
Package Include:
1 x MQ-137 Ammonia Gas Detection Sensor
Reviews
There are no reviews yet.