SKU: SENS-0854
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Winsen ME3-NO2 Electrochemical Nitrogen Dioxide Gas Sensor - 0-20ppm Range

₹6,759.00 (Inclusive of all taxes)
Out of Stock

The Winsen ME3-NO2 is an electrochemical gas sensor designed for precise detection of nitrogen dioxide (NO2) concentrations from 0 to 20ppm, ideal for integration into industrial safety systems, environmental monitoring stations, and air quality analyzers.

Features

  • Electrochemical sensing principle for accurate NO2 detection from 0 to 20ppm.
  • High sensitivity of (0.78±0.42) µA/ppm with a resolution of 0.1ppm.
  • Low power consumption and excellent long-term stability (<2% drift per month).
  • Fast response time of less than 25 seconds to reach 90% of final reading.
  • Linear output signal proportional to gas concentration for straightforward calibration.

Out of stock

Description

The ME3-NO2 sensor operates on a proven electrochemical principle, where target gas molecules undergo an oxidation reaction at a working electrode within a sealed electrolytic cell. The resulting current is directly proportional to the gas concentration, following Faraday’s law, enabling precise measurement. This method provides a stable and selective response specifically for nitrogen dioxide.

Engineered for demanding applications, the sensor features robust construction to maintain performance across a wide range of environmental conditions. Its low zero drift and high repeatability ensure reliable data collection over extended periods, making it suitable for continuous monitoring systems in industrial and regulatory settings.

Key Features

  • Electrochemical sensing cell optimized for nitrogen dioxide (NO2) detection.
  • Wide linear measurement range from 0 to 20ppm with 0.1ppm resolution.
  • High-value build with excellent repeatability (<2% of output value).
  • Minimal cross-sensitivity and good anti-interference ability for stable readings.
  • Designed for low-power operation, suitable for battery-powered monitoring devices.
  • Durable construction rated for operation within standard atmospheric pressure (90-110 kPa).

Applications

  • Continuous emission monitoring in industrial stacks and exhaust systems.
  • Urban air quality monitoring networks and environmental protection stations.
  • Indoor air quality assessment in parking garages, tunnels, and industrial facilities.
  • Portable gas detectors for occupational health and safety compliance.
  • Integration into HVAC control systems for demand-controlled ventilation.

Technical Specifications

Model NumberME3-NO2
Detection GasNitrogen Dioxide (NO2)
Measurement Range0–20 ppm
Sensitivity(0.78 ± 0.42) µA/ppm
Resolution0.1 ppm
Response Time (T90)<25 seconds
Load Resistance10 Ω
Repeatability<2% of output value
Stability (Drift/Month)<2%
Zero Drift (-20°C to 40°C)0.2 ppm
Output LinearityLinear
Working Pressure90–110 kPa
Storage Temperature-20°C to 50°C
Storage Humidity15% to 90% RH

Frequently Asked Questions

What is the operating principle of the ME3-NO2 sensor?

The ME3-NO2 utilizes an electrochemical sensing principle. Nitrogen dioxide gas undergoes an electrochemical oxidation reaction at a working electrode inside the sensor's electrolytic cell. The current generated by this reaction is directly proportional to the gas concentration, allowing for precise measurement.

What is the required load resistance for this sensor?

The sensor requires an external load resistance of 10 ohms. This resistor is typically placed across the sensor's output terminals to convert the generated current signal into a measurable voltage for your data acquisition system or microcontroller ADC input.

How fast does the sensor respond to changes in NO2 concentration?

The sensor has a response time (T90) of less than 25 seconds. This means it will reach 90% of its final reading value within 25 seconds after being exposed to a step change in NO2 gas concentration, making it suitable for real-time monitoring applications.

Does the sensor require calibration?

Yes, like all electrochemical sensors, periodic calibration is recommended to maintain accuracy. The sensor provides a linear output, simplifying the calibration process typically to a zero point adjustment in clean air and a span adjustment using a known concentration of NO2 calibration gas.

Package Includes

  • 1 x Winsen ME3-NO2 Gas Sensor

Additional Information

Weight 0.01 kg
Dimensions 7 × 5 × 3 cm