SKU: SENS-0893
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Winsen MG812 Mini Solid Electrolyte CO2 Gas Sensor - Metal Shell

₹1,009.00 (Inclusive of all taxes)
Out of Stock

The Winsen MG812 is a solid electrolyte electrochemical CO2 gas sensor designed for direct carbon dioxide concentration measurement. It provides a millivolt-level EMF output signal proportional to CO2 levels, suitable for integration into air quality monitors, HVAC systems, and industrial safety equipment.

Features

  • Solid Electrolyte Electrochemical Sensing Principle for CO2
  • Detection Range from 350 to 10,000 ppm CO2
  • Output Signal: ≥25 mV per 1000 ppm CO2 (EMF)
  • Low Power Heater: 5.0V ±0.1V, ~90mA (~450mW)
  • Compact Metal Shell Construction for Durability

Out of stock

Description

The Winsen MG812 operates on a solid electrolyte cell principle. When exposed to carbon dioxide, an electrochemical reaction generates an electromotive force (EMF) between its sensitive electrode and reference electrode. This output voltage is directly proportional to the CO2 concentration, providing a stable and selective measurement signal.

Engineered for reliable performance, the sensor features an integrated heater for optimal operating conditions, ensuring consistent sensitivity and minimal drift from ambient temperature and humidity variations. Its metal shell provides mechanical robustness for integration into fixed installations and portable monitoring devices.

Key Features

  • Solid Electrolyte Electrochemical CO2 Sensing Technology
  • High Sensitivity & Excellent Selectivity for Carbon Dioxide
  • Minimal Performance Impact from Temperature & Humidity Fluctuations
  • Stable Output & High Repeatability for Long-Term Monitoring
  • Compact, Durable Metal Housing for Industrial & Commercial Use
  • Low Power Consumption Heater Circuit for Energy-Efficient Operation

Applications

  • Indoor Air Quality (IAQ) Monitoring & Demand-Controlled Ventilation Systems
  • Greenhouse & Agricultural CO2 Enrichment Level Monitoring
  • Industrial Process Monitoring & Combustion Efficiency Analysis
  • Portable & Fixed CO2 Safety Monitors for Confined Spaces
  • HVAC System Integration for Smart Building Management

Technical Specifications

Model NumberMG812
Target GasCarbon Dioxide (CO2)
Detection Range350 – 10,000 ppm CO2
Output Signal≥25 mV / 1000 ppm CO2 (EMF)
Heater Voltage (VH)5.0 V ±0.1 V
Heater Resistance (RH)56.0 Ω ±3 Ω
Heater Current (IH)90 mA ±10 mA
Heater Power (PH)450 mW ±50 mW
Operating Temperature-20°C to 50°C
Storage Temperature-20°C to 70°C
Housing MaterialMetal Shell

Frequently Asked Questions

What is the output signal of the MG812 CO2 sensor and how do I read it?

The MG812 provides an analog electromotive force (EMF) output signal. The voltage is proportional to CO2 concentration, with a sensitivity of ≥25 mV per 1000 ppm CO2. You will need a high-impedance analog input on a microcontroller or data acquisition system to measure this millivolt-level signal accurately, typically requiring a signal conditioning or amplification circuit.

What are the power requirements for the MG812 sensor's heater?

The integrated heater requires a stable 5.0V DC ±0.1V supply. Under typical conditions, it draws approximately 90mA, resulting in a heater power consumption of about 450mW. This heater is essential for maintaining the solid electrolyte at its optimal operating temperature for consistent and accurate readings.

Can this sensor be used for outdoor or industrial environments?

Yes, the MG812 is suitable for controlled industrial and commercial environments within its operating temperature range of -20°C to 50°C. Its metal housing offers durability. However, for harsh outdoor conditions, additional protective enclosures may be necessary to shield it from direct moisture ingress and extreme temperatures beyond its specified limits.

Package Includes

  • 1 x Winsen MG812 Mini Solid Electrolyte CO2 Gas Sensor

Additional Information

Weight 0.01 kg
Dimensions 4 × 3 × 1 cm