Based on Non-Dispersive Infrared (NDIR) technology, the CO2 sensor features high sensitivity, good stability, low power consumption, and excellent linear output for reliable measurement performance. The NDIR CO2 sensor is suitable for HVAC systems, indoor air quality monitors, smart buildings, offices, classrooms, laboratories, greenhouses, environmental monitoring equipment.
OEM-Friendly Sensor Module
- Compact & Space: Saving Design – Small form factor for easy integration into compact monitoring equipment.
- Stable Sensor Structure: The enclosed sensing assembly and integrated circuit board provide a neat and organized module structure for reliable installation in different types of monitoring equipment.
- OEM-Friendly Sensor Module: Designed as an integrated CO₂ sensing component, it can be incorporated into CO₂ monitors, indoor air quality instruments, HVAC systems, smart building devices, environmental monitoring equipment, and industrial gas detection systems.
Metal Shielding Housing
- Metal Shielding Housing: Features a durable metal shielding enclosure that helps protect the internal sensing components and electronic circuitry during integration and operation.
- Compact Module Design: The compact structure saves installation space, making it suitable for integration into air quality monitors, HVAC equipment, environmental monitoring systems, and other gas detection devices.
- Integrated Connector Interface: Equipped with a built-in connector and wiring harness for convenient electrical connection, helping simplify installation and system integration.
- Pre-Wired for Easy Integration: The attached multi-wire cable provides a practical connection solution for OEM equipment and customized CO₂ monitoring systems, reducing wiring complexity during installation.
Applications
A CO2 Gas Sensor can be used in a wide range of applications where carbon dioxide concentration needs to be monitored, controlled, or analyzed. Common application fields include:
- Greenhouses & Agriculture: Monitoring and controlling CO₂ concentration to support plant growth and improve greenhouse environmental management.
- Laboratories: Suitable for laboratory equipment and environmental monitoring systems requiring accurate CO₂ measurement.
- Food & Beverage Industry: Used for monitoring CO₂ levels during food processing, beverage production, packaging, and storage.
- Medical & Healthcare Equipment: Integrated into certain respiratory and patient-monitoring equipment where CO₂ measurement is required.
- Automotive & Transportation: Used for monitoring cabin air quality in vehicles, buses, trains, and other enclosed transportation environments.
Greenhouses & Agriculture
Laboratories
Food & Beverage Industry
Automotive
| Model | SISCO-GS-CO2-Z16 |
| Detection Gas | CO₂ |
| Working Voltage | 5 VDC |
| Average Current | < 85 mA |
| Peak Current | 150 mA |
| Interface Level | 3.3 V (5 V Compatible) |
| Measuring Range | 0–50,000 ppm, range selectable; up to 150,000 ppm can be extended |
| Output Signal | UART / PWM |
| Preheat Time | 10 s |
| Response Time | T90 < 30 s |
| Working Temperature | -10°C to 50°C |
| Working Humidity | 0–95% RH (Non-condensing) |
| Storage Temperature | -20°C to 60°C |
Measuring range and accuracy
| Target gas | Measuring range | Solution | Accuacy | Mark |
| Carbon Dioxide (CO2) |
0~2000 ppm | 1 ppm | ± (50 ppm＋5% reading value) | Temperature compensation |
| 0~5000 ppm | ||||
| 0~10000 ppm | ||||
| 0~5% VOL | < 1% VOL reading value | |||
| 0~10% VOL | ||||
| 0~15% VOL |
Dimension (mm)
Pin Definition
| PIN NO. | Description |
| PIN 4 | Vin (Voltage Input) |
| PIN 3 | GND |
| PIN 2 | NC |
| PIN 7 | PWM |
| PIN 1 | HD (Zero Calibration, Keep Low Electrical Level for More Than 7 Seconds) |
| PIN 5 | UART (RXD) TTL electrical Level Data Input |
| PIN 6 | UART (TXD) TTL Electrical Level Data Output |
Q1: What is a CO2 sensor?
A1: A CO2 sensor is a device used to measure the concentration of carbon dioxide in the air. It converts the detected CO₂ concentration into an electrical signal that can be displayed or processed by a monitoring or control system. CO₂ sensors are widely used in indoor air quality monitoring, HVAC systems, industrial equipment, greenhouses, and environmental monitoring.
Q2: How does a CO2 sensor work?
A2: SISCO CO₂ sensors use infrared sensing technology, particularly Non-Dispersive Infrared (NDIR) technology. The sensor measures how much infrared light is absorbed by carbon dioxide molecules in the air. The amount of infrared absorption is related to the CO₂ concentration, allowing the sensor to calculate and output a corresponding reading.
Q3: Can a CO2 sensor be integrated into an existing system?
A3: Yes. Many CO₂ sensor modules are designed for integration into larger systems and electronic equipment. Depending on the specific model, available communication or output interfaces may include UART, PWM, analog output, or other digital interfaces. Users should check the sensor's specifications to ensure electrical and communication compatibility.
Tips: Why is NDIR commonly used for CO2 measurement?
NDIR (Non-Dispersive Infrared) technology is commonly used for CO₂ measurement because carbon dioxide has a distinct infrared absorption characteristic. An NDIR sensor sends infrared light through an air sample and measures how much of the light is absorbed by CO₂ molecules. The change in infrared absorption can then be converted into a CO₂ concentration reading, typically in ppm.
NDIR sensors are also well suited to continuous and long-term CO₂ monitoring because the measurement process does not require the sensor to consume the target gas. They can provide stable measurements with relatively good selectivity for CO₂ and can be designed for a wide range of applications, including indoor air quality monitoring, HVAC systems, greenhouse control, environmental monitoring, industrial equipment, and IoT devices. This combination of reliable CO₂ detection, continuous measurement capability, and easy system integration makes NDIR a popular choice for CO₂ sensing.
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- Expendable parts.
- Routine cleaning or normal cosmetic and mechanical wear.
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