MQ-137 Ammonia Gas NH3 Sensor Module - Gas Sensor

MQ-137 Ammonia Gas NH3 Sensor Module The MQ-137 Ammonia Gas NH3 Sensor Module is an effective tool for detecting and sensing gases such as ammonia (NH3) and carbon monoxide (CO). This sensor module is compatible with digital pins, making it easy to connect with microcontrollers, like Arduino boards. Designed for versatility and high sensitivity, it is capable of detecting ammonia concentrations ranging from 5 to 200 ppm, ensuring safety and maintaining environmental standards in various applications.

Key Features - MQ-137 Ammonia Gas NH3 Sensor Module

• Wide detecting scope with a detection range of 5 – 200 ppm for Ammonia gas
• Fast response time (less than 1s) and quick recovery
• High sensitivity to ammonia and stable performance (3%)
• Long lifespan
• Simple analog voltage output
• Operating Voltage: DC5V
• Detects NH3, Ammonia

Applications

This versatile sensor is highly effective for air quality monitoring and gas leak alarms, incorporating devices such as a mass flow meter gas. It is suitable for a variety of applications, including gas leak detection systems and ensuring compliance with safety standards in sensitive environments like hospitals.

Technical Specifications

How to Use - MQ-137 Ammonia Gas NH3 Sensor Module

• Power it with a 5V DC supply and allow the sensor to preheat for around 20 seconds.
• Connect the analog pin (AOUT) to an analog input of a microcontroller.
• Read the analog output voltage, which varies in proportion to the concentration of ammonia gas detected.
• Use the digital output (DOUT) for direct gas threshold alarming if integrated with a microcontroller.
• Adjust the potentiometer for precise calibration under specific conditions.

Package Includes

MQ-137 Ammonia Gas NH3 Sensor Module - Gas Sensor x 1

Additional Resources

Video Tutorials