SKU: SENS-0853
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Winsen ME3-SO2 Electrochemical SO2 Gas Sensor - 0-20ppm Range

₹9,869.00 (Inclusive of all taxes)
Out of Stock

The Winsen ME3-SO2 is an electrochemical gas sensor designed for precise detection and measurement of sulfur dioxide (SO2) concentrations from 0 to 20ppm. It provides a linear current output proportional to gas concentration, making it suitable for integration into industrial safety monitors, environmental protection systems, and air quality control panels.

Features

  • Electrochemical sensing principle for accurate SO2 detection from 0-20ppm.
  • High sensitivity of (0.55±0.15) µA/ppm with a resolution of 0.1ppm.
  • Fast response time of less than 30 seconds (T90) to concentration changes.
  • Excellent long-term stability with less than 2% signal drift per month.
  • Low power consumption and linear output for easy system integration.

Out of stock

Description

The ME3-SO2 sensor operates on a proven electrochemical principle. Target gas molecules undergo an oxidation reaction at the working electrode within the sensor’s internal electrolytic cell. The current generated by this reaction is directly proportional to the gas concentration, following Faraday’s law, allowing precise concentration measurement through current sensing.

Engineered for reliability in demanding settings, the sensor features minimal zero drift across an operating temperature range of -20°C to 40°C and maintains performance under working pressures of 90-110 kPa. Its robust design ensures consistent readings with a repeatability of less than 2% of the output value, making it a dependable component for continuous monitoring applications.

Key Features

  • Electrochemical sensing cell for specific SO2 detection with high selectivity.
  • Wide linear measurement range ensures accurate readings across the 0-20ppm scale.
  • Superior anti-interference ability minimizes cross-sensitivity to other common gases.
  • Stable performance with low monthly drift guarantees long-term measurement integrity.
  • Compact form factor facilitates integration into portable and fixed installation devices.
  • Low operational power requirement suits battery-powered monitoring solutions.

Applications

  • Continuous emission monitoring systems (CEMS) for industrial smokestacks and exhaust streams.
  • Ambient air quality monitoring stations in urban and industrial perimeter networks.
  • Workplace safety and occupational health monitors in chemical processing and smelting facilities.
  • Portable gas detectors for environmental inspection and leak detection surveys.
  • Ventilation control and indoor air quality management in laboratories and manufacturing plants.

Technical Specifications

Model NumberME3-SO2
Detection GasSulfur Dioxide (SO2)
Measurement Range0–20 ppm
Sensitivity(0.55 ± 0.15) µA/ppm
Resolution0.1 ppm
Response Time (T90)< 30 seconds
Load Resistance10 Ω
Repeatability< 2% of output value
Stability< 2% per month
Output LinearityLinear
Zero Drift≤ 0.2 ppm (-20°C to 40°C)
Working Pressure90–110 kPa
Storage Temperature-20°C to 50°C
Storage Humidity15% to 90% RH

Frequently Asked Questions

What is the output signal of the ME3-SO2 sensor and how do I interface with it?

The ME3-SO2 sensor provides a linear current output proportional to the SO2 concentration. It requires an external load resistor (typically 10Ω) to convert the current signal into a measurable voltage. This analog voltage can then be read by a microcontroller's ADC or a dedicated signal conditioning circuit for further processing and concentration calculation.

What is the recommended operating voltage and power consumption for this sensor?

The ME3-SO2 is an electrochemical sensor that operates on a bias voltage applied across its electrodes, typically in the range of a few hundred millivolts, as specified in its full datasheet. Its power consumption is very low, making it suitable for battery-operated portable devices. Always consult the official Winsen datasheet for the exact potentiostatic circuit requirements.

How often does the ME3-SO2 sensor require calibration, and what is its lifespan?

For critical applications, periodic calibration is recommended to maintain accuracy, influenced by exposure conditions and usage. The sensor exhibits excellent long-term stability with less than 2% signal drift per month. The typical operational lifespan of electrochemical sensors like the ME3-SO2 is several years under normal atmospheric conditions and within specified concentration ranges.

Can this sensor be used outdoors or in harsh environments?

The ME3-SO2 sensor can be used in controlled outdoor environments but requires proper housing to protect it from direct rain, condensation, and extreme temperatures beyond its specified storage range (-20°C to 50°C). For harsh industrial environments with particulates or corrosive vapors, an additional protective membrane or enclosure with appropriate filtration is necessary.

Package Includes

  • 1 x Winsen ME3-SO2 Gas Sensor

Additional Information

Weight 0.01 kg
Dimensions 7 × 4 × 2 cm