Four-Electrode Design
An auxiliary electrode compensates zero current for improved low-level measurement.
ME4-CO-E4 Four-Electrode High-Resolution CO Sensor
The ME4-CO-E4 is a four-electrode electrochemical carbon monoxide sensor developed for high-resolution atmospheric and emissions monitoring. Its auxiliary electrode compensates zero current, supporting resolution below 10 ppb and zero drift below ±100 ppb.
BrandWinsen
Sensing PrincipleElectrochemical
Target GasCO
Product TypeFour-Electrode CO Sensor
Gas Sensing for OEM Integration
Product Overview
A four-electrode CO sensor for urban atmosphere, enterprise emissions and high-resolution environmental monitoring.
The additional auxiliary electrode compensates zero-current effects and improves low-concentration measurement performance.
Its strong signal level, low zero current and wide linear range support environmental networks, emergency monitoring and emissions assessment.
Designed for Reliable Integration
Key Features
Resolution Below 10 ppb
Designed for high-resolution atmospheric carbon monoxide monitoring.
Low Zero Drift
Specified zero drift below ±100 ppb from -20°C to 40°C.
Wide Pressure Range
Specified for operation from 80 to 120 kPa.
Fast Response
T90 response is specified below 30 seconds.
Environmental Monitoring Focus
Developed for ambient air, enterprise emissions and emergency monitoring.
Typical Use Cases
Applications
Urban Atmospheric Monitoring
Enterprise Environmental Monitoring
Emission Gas Monitoring
Emergency Environmental Assessment
Official Product Parameters
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | ME4-CO-E4 |
| Detected Gas | Carbon monoxide (CO) |
| Detection Range | 0–1000 ppm |
| Maximum Range | 2000 ppm |
| Sensitivity | 0.3–0.5 µA/ppm |
| Resolution | <10 ppb |
| Response Time (T90) | <30 s |
| Recommended Load Resistance | 33–100 Ω |
| Output Linearity | Linear |
| Stability | <10% per month |
| Zero Drift (-20°C to 40°C) | <±100 ppb |
| Temperature Range | -30°C to 50°C |
| Humidity Range | 15–90% RH |
| Pressure Range | 80–120 kPa |
| Dimensions | Ø32 × 14.5 mm |
| Expected Life | 2 years in air |
Specifications are based on the official Winsen product page or product manual. Confirm the latest datasheet, calibration requirements, communication protocol and mechanical drawing before final product design.
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