This infrared CO2 sensor supports multiple signal output modes, including UART, PWM, and 0.4–2 V analog output. With its compact design and convenient interfaces, the infrared carbon dioxide sensor is suitable for HVAC systems, indoor air quality monitoring, industrial process and safety monitoring, agricultural and livestock environments, fresh-air systems, ventilation equipment, and carbon dioxide detection devices, making it suitable for OEM equipment and integrated CO₂ monitoring applications.
High Sensitivity & Long Lifespan
- High Sensitivity & Resolution: Provides sensitive detection and high-resolution measurement of CO₂ concentration changes, ensuring accurate and reliable monitoring performance.
- Long Lifespan: Designed for long-term operation with excellent stability, reducing the need for frequent sensor replacement and maintenance.
- Low Power Consumption: Operates with low power consumption while maintaining stable CO₂ detection performance, making it suitable for continuous monitoring and embedded systems.
- 5V Constant Power Supply: Supports a stable 5V power supply for reliable operation in gas monitoring equipment and industrial control systems.
Flexible Output & Fast Response
- Multiple Output Methods: Supports serial port and DAC (0.4V–2V) outputs, providing flexible signal transmission for different monitoring and control systems.
- Quick Response & Recovery: Responds rapidly to changes in CO₂ concentration and quickly returns to normal measurement conditions after concentration changes, supporting real-time monitoring.
- Temperature Compensation: Automatically compensates for temperature variations to maintain stable measurement performance and excellent linear output across changing environmental conditions.
- Anti-Poisoning & Anti-Vapor Interference: Provides strong resistance to common interfering gases and water vapor, helping maintain reliable detection performance in demanding industrial environments.
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-FS4NDIR |
| Detection Gas | CO₂ |
| Detection Principle | Non-Dispersive Infrared Absorption Detection (NDIR) |
| Working Voltage | DC 3.6–5.0 V |
| Working Current | ≤85 mA (5 V power supply) |
| Measuring Range | 0–2000 ppm |
| Resolution | 1 ppm |
| Data Accuracy | ±50 ppm ±3% FS |
| Default Output Mode | Serial Port |
| Reserved Output Mode | DAC (0.4–2 V), default closed |
| Response Time | T90 ≤120 s |
| Detection Frequency | Once per second (default) |
| Service Life | 10 years (in air) |
| Working Temperature | -20°C to 70°C |
| Storage Temperature | -30°C to 60°C |
| Working Humidity | 0–95% RH, non-condensing |
| Storage Humidity | 0–95% RH, non-condensing |
| Pressure Range | 75–120 kPa |
Dimension
Sensor Working Principle
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: How to choose an industrial infrared CO₂ sensor?
When choosing an industrial infrared CO₂ sensor, consider the measurement range, accuracy, response time, operating temperature and humidity, output interface, and long-term stability. Make sure the sensor’s specifications match your application environment and control system.
For industrial applications, also look for temperature compensation, anti-interference performance, low power consumption, and long service life to ensure reliable CO₂ monitoring.
Thank you for buying industrial test and measurement equipment on SISCO.com, all products sold by SISCO and the partner cover a 12 months warranty, effective from the date of receiving the products.
What is covered?
SISCO is responsible for providing free spare parts, and free technical support to assist the customer to repair the defective products until the problem is solved.
What is not covered?
- Product purchased from anyone other than a SISCO store or a SISCO authorized reseller.
- Expendable parts.
- Routine cleaning or normal cosmetic and mechanical wear.
- Damage from misuse, abuse or neglect.
- Damage from use of parts other than SISCO approved.
- Damage from use outside the product’s usage or storage parameters.
- Damage from use of parts not sold by SISCO.
- Damage from modification or incorporation into other products.
- Damage from repair or replacement of warranted parts by a service provider other than a SISCO authorized service provider.
- Damage caused by the application environment not meeting the product usage requirements and the failure to perform preventive maintenance.
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