The high quality NH3 gas sensor is designed for accurate detection in the 0-100ppm range. The gas sensor operates at 5V ± 0.5V DC and consumes as little as ≤1W, making it ideal for domestic and industrial gas detection. It operates efficiently over a wide temperature range of -20°C to 50°C and relative humidity of 15% to 95% without condensation. Utilizing natural diffusion and an electrochemical tri-electrode, it has a resolution of 1 ppm and an error of ≤±3%. Communication is via the UART interface at a baud rate of 9600 in accordance with the Modbus-RTU protocol and features a 0-2V analog output. The gas sensor is lightweight (10 grams) and requires only 30 seconds to warm up, ensuring reliable and efficient detection of ammonia.

Specification

Module Features

• NH3 gas sensor can be operated with electric hotplugging and unplugging.
• Factory calibrated accurately, no need to re-calibrate for use.
• Simultaneous digital (UART) and analog outputs for ease of use.
• Standard MODBUS communication protocol.
• Compatible with infrared, electrochemical, catalytic, semiconductor and other sensors.

Structure

Note: Tolerance range ±0.25mm

Working Principle

Application

Tips: How to maintain the ammonia (NH3) gas sensor?

1. Turn Off the Power: For safety, always turn off the power before starting maintenance.
2. Periodic Calibration: Calibrate the sensor periodically to maintain accuracy. Follow the manufacturer's instructions for calibration procedures.
3. Clean Environment: Keep the sensor free of dust and contaminants. Use a soft brush or compressed air to clean the sensor surface.
4. Check Connections: Check electrical connections for any signs of wear or corrosion. Make sure all connections are secure.
5. Avoid Moisture: Ensure that the sensor is not exposed to excessive moisture during maintenance to prevent damage.
6. Replacement Parts: Use only genuine replacement parts recommended by the manufacturer to ensure compatibility and reliability.
7. Documentation: Keep a log of maintenance activities, including calibration dates and any repairs performed.

Following these steps will help ensure the longevity and accuracy of your NH3 gas sensor.