G22-CH2O Formaldehyde Gas Sensor
The G22-CH2O formaldehyde gas sensor is designed for precise and reliable detection of formaldehyde gas concentrations in the air. Using solid-state electrochemical sensing technology, this sensor provides excellent performance with fast response times, low zero drift, and strong anti-interference capability, making it ideal for various air quality monitoring applications.
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Description
Key Features
- Solid-State Electrochemical Sensing Technology
- Utilizes proton membranes instead of traditional electrolytes to measure formaldehyde gas concentrations through electrochemical reactions, ensuring high accuracy and reliability.
- Good Repeatability and Low Zero Drift
- Offers consistent performance with minimal signal drift over time, ensuring stable readings in various conditions.
- Fast Response Time
- The sensor’s response time (T90) is less than 15 seconds, allowing for quick detection and response to changes in formaldehyde concentration.
- Strong Anti-Interference
- The sensor is designed to perform reliably in environments with potential interference from other gases, making it suitable for a wide range of applications.
- Safety and Durability
- The sensor housing is made from PC V0 fireproof material, providing durability and safety in harsh environments.
- Wide Working Voltage Range
- The sensor operates within a voltage range of DC 5V to 24V, making it compatible with various systems.
- Output Signal Options
- Provides NPN and high/low level output signals for easy integration into control systems or detection equipment.
Technical Specifications
| Parameter | Details |
|---|---|
| Input Voltage | DC 5V – 24V |
| Load Current | <100mA |
| Quiescent Current | <10mA |
| Gas Detected | Formaldehyde (CH₂O) |
| Resolution | 0.01ppm |
| Repeatability | <2% output value |
| Threshold Value | 0.06ppm |
| Max Load Concentration | 20ppm |
| Response Time (T90) | <15s |
| Zero Output (20°C) | -0.10ppm ~ 0.02ppm |
| Sample Mode | Diffusion type |
| Output Method | NPN, high & low level |
Working Conditions
| Parameter | Details |
|---|---|
| Pressure Range | 1 ± 0.1 standard atmospheric pressure |
| Expected Service Life | 3 years (in air) |
| Storage Temperature | +10°C ~ +30°C |
| Operating Temperature | Continuous: -10°C ~ +50°C Discontinuous: -10°C ~ +55°C |
| Working Humidity | 15% RH ~ 90% RH |
| Stability | <2% signal value per month |
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
- Commercial and Civil Formaldehyde Detection
- Suitable for monitoring formaldehyde levels in both commercial and residential settings to ensure air quality and safety.
- Portable Formaldehyde Detection Instruments
- Can be used in handheld detection devices to monitor indoor air quality, particularly in areas prone to formaldehyde contamination (e.g., new furniture, construction materials).
- Fixed Point Formaldehyde Detectors
- Ideal for continuous monitoring of formaldehyde levels in enclosed spaces such as offices, schools, and hospitals, providing real-time alerts when concentrations exceed safe thresholds.
Usage Instructions
- Calibration: The sensor has a resolution of 0.01ppm and should be calibrated periodically for optimal performance. Zero output typically ranges from -0.10ppm to 0.02ppm at 20°C.
- Installation: The G22-CH2O features a hidden thread for concealed mounting and a 4-hole screw fixation, making it easier and more stable to install in various applications.
- Power Supply: Ensure the sensor receives a DC 5V to 24V power supply. Excessive voltage may damage the sensor.
- Environmental Considerations: The sensor operates best in a temperature range of -10°C to 50°C (continuous operation) and -10°C to 55°C (discontinuous operation). It can withstand humidity levels from 15% RH to 90% RH.
Conclusion
The G22-CH2O Formaldehyde Gas Sensor is a reliable and efficient solution for detecting formaldehyde gas in various environments. With its fast response time, excellent repeatability, and low drift, it’s an ideal choice for both portable and fixed-point air quality monitoring systems. Whether used in residential, commercial, or industrial applications, this sensor ensures accurate and timely detection of harmful formaldehyde concentrations, contributing to a healthier and safer environment.
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