G22-CO Carbon Monoxide Gas Sensor
The G22-CO carbon monoxide gas sensor is designed to detect and measure CO concentrations in various environments. It utilizes a fuel cell sensor, where carbon monoxide undergoes an oxidation-reduction reaction, producing a current that is proportional to the concentration of CO. This sensor offers excellent repeatability, stability, and fast response times, making it ideal for both commercial and residential applications.
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Description
Key Features
- Fuel Cell Technology
- The sensor uses a fuel cell where CO reacts with oxygen on electrodes to generate a current, which is directly proportional to the CO concentration.
- Good Repeatability and Low Zero Drift
- Provides stable and consistent readings over time with minimal drift, ensuring reliable performance in long-term monitoring applications.
- Fast Response Time
- The sensor has a response time (T90) of <15 seconds, enabling quick detection of carbon monoxide levels.
- Strong Anti-Interference
- Designed to minimize interference from other gases, ensuring that CO readings are accurate even in complex environments with multiple potential pollutants.
- Safety and Durability
- The sensor’s PC V0 fireproof material housing enhances its safety and stability, making it suitable for use in various industrial and residential settings.
- Wide Working Voltage Range
- Operates within a power supply range of DC 5V to 24V, making it versatile and compatible with a variety of systems.
- Output Signal Options
- Offers NPN and high/low level output signals, making it easy to integrate with control and monitoring systems.
Technical Specifications
| Parameter | Details |
|---|---|
| Input Voltage | DC 5V – 24V |
| Load Current | <100mA |
| Quiescent Current | <10mA |
| Gas Detected | Carbon Monoxide (CO) |
| Maximum Load Concentration | 1000ppm |
| Repeatability | <2% output value |
| Threshold Value | 20ppm |
| Response Time (T90) | <15s |
| Zero Output | <±2ppm |
| Sample Mode | Diffusion type |
| Output Method | NPN, high & low level |
Working Conditions
| Parameter | Details |
|---|---|
| Pressure Range | 1 ± 0.1 standard atmospheric pressure |
| Service Life | 8 years (in air) |
| Storage Temperature | +10°C ~ +30°C |
| Operating Temperature | Continuous: -10°C ~ +50°C Intermittent: -10°C ~ +55°C |
| Working Humidity | 15% RH ~ 90% RH |
Chiasma Interference (Cross Sensitivity)
The G22-CO sensor can respond to certain gases in addition to CO. The following table lists typical responses to common interfering gases and their equivalent CO concentration at specified concentrations:
| Gas | Concentration (ppm) | Equivalent CO Concentration (ppm) |
|---|---|---|
| Hydrogen Sulfide | 100 | 0 |
| Sulfur Dioxide | 20 | 0 |
| Hydrogen | 200 | 40 |
| Vinyl | 100 | 80 |
| Nitric Oxide | 35 | 6 |
| Nitrogen Dioxide | 5 | 0 |
| Ethanol | 1000 | 0 |
| Isopropyl Alcohol | 200 | 0 |
| Acetone | 1000 | 0 |
| Ammonia | 50 | 0 |
Note: While the sensor is designed to minimize interference, the actual response may vary depending on the specific application and environment. It is important to calibrate the sensor accordingly.
Physical Properties
| Parameter | Details |
|---|---|
| Size | L 30.35mm x W 47.4mm x H 47.4mm |
| Cable Length | 50cm ±10mm (customizable for bulk orders) |
| Shell Material | Black PC V0 fireproof material |
| Safety Certificate | CE certified |
Applications
- Carbon Monoxide Detection in Commercial and Residential Settings
- Ideal for detecting carbon monoxide in both residential homes and commercial buildings to ensure occupant safety.
- Portable Carbon Monoxide Detectors
- Perfect for handheld CO detectors, providing a compact and reliable tool for personal safety and environmental monitoring.
- Fixed Point Carbon Monoxide Detectors
- Suitable for continuous monitoring of CO levels in areas such as factories, parking garages, and tunnels, ensuring a safe environment for workers and the public.
Usage Instructions
- Calibration: The sensor provides reliable performance with <2% repeatability. Ensure periodic calibration for consistent accuracy, especially in environments with potential interference.
- Installation: The G22-CO sensor features hidden thread for concealed mounting and 4-hole screw fixation for easy and secure installation.
- Power Supply: The sensor operates within a DC 5V to 24V voltage range. Ensure that the power supply matches the required specifications to avoid damage.
- Environmental Considerations: The sensor operates best in temperatures ranging from -10°C to +50°C (continuous operation) and can tolerate humidity levels from 15% RH to 90% RH.
Conclusion
The G22-CO Carbon Monoxide Gas Sensor is a highly reliable and accurate solution for detecting CO in various environments. With its fast response time, strong anti-interference capabilities, and long service life, it is an excellent choice for both portable and fixed-point carbon monoxide detection systems. The sensor’s versatility, ease of installation, and safety features make it an essential component for ensuring a safe environment in commercial, industrial, and residential applications.
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