SKU: SENS-0855
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Winsen ME3-NH3 Electrochemical Ammonia Sensor - 0-50 ppm Range

₹6,279.00 (Inclusive of all taxes)
Out of Stock

The Winsen ME3-NH3 is an electrochemical ammonia (NH3) gas sensor module designed for industrial and environmental monitoring systems. It provides a linear current output proportional to gas concentration from 0 to 50 ppm, featuring low power consumption and stable performance for integration with data loggers, PLCs, and air quality control units.

Features

  • Electrochemical sensing principle for precise NH3 detection from 0 to 50 ppm
  • High sensitivity of (0.10 ± 0.05) µA/ppm with a resolution of 0.5 ppm
  • Fast response time (T90) of ≤90 seconds and excellent long-term stability
  • Low power consumption and wide linear output range for easy signal conditioning
  • Robust construction suitable for industrial and environmental protection applications

Out of stock

Description

The ME3-NH3 sensor operates on a proven electrochemical principle. Target gas molecules diffuse into the sensor’s electrolytic cell and undergo an oxidation reaction at the working electrode. The resulting current is directly proportional to the gas concentration, following Faraday’s law, enabling accurate ppm-level measurement.

Engineered for reliability, the sensor features a 10Ω load resistance and maintains output linearity across its specified range. It is designed to operate within standard atmospheric pressures (90-110 kPa) and offers good anti-interference capability against common cross-sensitive gases, ensuring dependable performance in mixed-gas environments.

Key Features

  • Electrochemical sensing cell for selective ammonia (NH3) detection
  • Wide measurement range of 0-50 ppm with a resolution of 0.5 ppm
  • High sensitivity and precision with minimal zero drift across operating temperatures
  • Fast response time (T90 ≤ 90s) for real-time monitoring applications
  • Excellent repeatability (<10% of output value) and monthly stability (<10%)
  • Low power consumption design suitable for continuous monitoring systems
  • Robust performance across a working pressure range of 90-110 kPa
  • Linear output signal simplifies interface with microcontrollers and transmitters

Applications

  • Industrial safety monitoring in refrigeration, fertilizer production, and chemical processing plants
  • Environmental air quality monitoring stations and urban pollution detection networks
  • Agricultural facility monitoring for livestock barns and waste management systems
  • HVAC and indoor air quality control systems in commercial buildings
  • Portable gas detectors and fixed-point leak detection systems

Technical Specifications

Item TypeGas Sensor
Model NumberME3-NH3
Detection GasAmmonia (NH3)
Measurement Range0 ~ 50 ppm
Sensitivity(0.10 ± 0.05) µA/ppm
Resolution0.5 ppm
Response Time (T90)≤ 90 seconds
Load Resistance10 Ω
Repeatability< 10% of output value
Stability< 10% per month
Output LinearityLinear
Zero Drift-3 ~ 10 ppm (-20°C to 40°C)
Storage Temperature-20°C ~ 50°C
Storage Humidity15% ~ 90% RH
Working Pressure90 - 110 kPa

Frequently Asked Questions

What is the output signal of the ME3-NH3 sensor and how do I interface with it?

The ME3-NH3 provides a linear current output proportional to the NH3 concentration. The sensitivity is (0.10 ± 0.05) µA/ppm across a 0-50 ppm range. To read it, you typically use a transimpedance amplifier or a precision resistor (load resistance is 10Ω) to convert the current signal into a measurable voltage for your microcontroller, PLC, or data acquisition system.

What is the response time and how often does this sensor require calibration?

The sensor has a T90 response time of ≤90 seconds to reach 90% of the final reading upon gas exposure. For maintaining accuracy, periodic calibration is recommended. The sensor exhibits excellent stability (<10% drift per month), but best practices for critical industrial monitoring involve calibration checks every 3 to 6 months using certified calibration gas.

What are the operating environment limits for this ammonia sensor?

The ME3-NH3 is designed for standard atmospheric conditions. It operates effectively within a working pressure range of 90-110 kPa. While the specified storage temperature is -20°C to 50°C, continuous operation is optimal within a stable ambient temperature range to minimize zero drift, which is specified as -3 to 10 ppm between -20°C and 40°C.

Package Includes

  • 1 x Winsen ME3-NH3 Electrochemical Ammonia Sensor

Additional Information

Weight 0.01 kg
Dimensions 7 × 4 × 3 cm