🔷 What is a CO₂ Sensor?
A CO₂ sensor measures the concentration of carbon dioxide gas in air or enclosed environments. It is widely used for indoor air quality monitoring, industrial safety, HVAC systems, and environmental analysis.
Air Quality Industrial Safety HVAC IoT Ready⚙️ Working Principle
Most CO₂ sensors operate using the NDIR (Non-Dispersive Infrared) principle. CO₂ molecules absorb infrared light at a specific wavelength. The sensor measures the reduction in IR light intensity to determine CO₂ concentration.
- IR light source emits radiation
- CO₂ absorbs specific wavelength
- Detector measures remaining intensity
- Output proportional to CO₂ level
📊 Types of CO₂ Sensors
- NDIR Sensors – High accuracy, most common
- Chemical Sensors – Lower cost, less stable
- Photoacoustic Sensors – Very high precision (advanced use)
📡 Output Signals
- Analog Output: 0–5V / 4–20mA
- Digital Output: UART / I2C
- Industrial Protocols: RS485 (Modbus)
- Wireless: 4G LTE, LoRa, WiFi (via IoT Gateway)
📈 Measured Parameters
- CO₂ Concentration (ppm)
- Temperature (optional)
- Humidity (optional)
🏭 Industrial Applications
- Indoor Air Quality Monitoring
- HVAC Demand Control Ventilation
- Greenhouses (Plant Growth Optimization)
- Cold Storage & Warehouses
- Confined Space Safety Monitoring
- Hospitals & Laboratories
- Smart Buildings & Smart Cities
🌐 IoT Integration
- Real-time CO₂ monitoring dashboard
- Threshold alerts (SMS / Email)
- Ventilation automation
- Data logging & analytics
- Integration with BMS / SCADA
🚀 Hexitronics Advantage
- Plug & Play IoT Integration
- Multi-sensor data fusion
- Cloud + Edge architecture
- Secure data transmission (TLS enabled)
- Scalable deployment