Wobo Industrial Equipment Co., Ltd.
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Product Overview
The toxic and hazardous gas detector with alarm uses advanced electrochemical sensing technology and is specifically designed for the detection and alarm of toxic gases such as H₂S.
The device continuously monitors gas concentration with high accuracy and triggers an alarm when levels exceed preset safety thresholds, effectively protecting both personnel and the working environment. With temperature compensation and automatic zero calibration, along with a long-life sensor design, the instrument ensures stable and reliable long-term operation even in harsh conditions.
Working Principle
The detector operates based on electrochemical sensing principles. When the target gas enters the sensor, it undergoes a redox reaction at the electrode surface, generating an electrical current proportional to the gas concentration.
This signal is amplified and processed to accurately determine the concentration of gases such as H₂S. Temperature compensation and automatic zero calibration minimize the effects of environmental variations, ensuring accurate and stable measurement results.
Key Features
- High Accuracy Detection: Electrochemical sensor provides precise measurement of H₂S concentration.
- Strong Adaptability: Capable of operating in oxygen-free environments, suitable for special conditions.
- Intelligent Temperature Compensation: Automatically corrects measurement deviations caused by temperature changes.
- Long-Life Sensor: Resistant to poisoning, ensuring durability and stable performance.
- Automatic Zero Calibration: Maintains optimal detection accuracy at all times.
- Explosion-Proof Design: Rated Ex d IIC T6 Gb, suitable for high-risk environments.
Applications
- Natural Gas & Coalbed Methane Monitoring: Detects H₂S leaks during production and transportation to ensure safety.
- Landfill Sites: Monitors toxic gases generated during waste decomposition to prevent accidents.
- Wastewater Treatment Plants: Detects harmful gases to protect workers’ health.
- Anaerobic Fermentation Processes: Monitors toxic gas generation to reduce environmental and personnel risks.
| Parameter | Description |
| Measurement Component | H2S |
| Measurement Principle | ECD Electrochemical |
| Measurement Range | 0~100ppm |
| Accuracy | ±2μmol/mol or ±10% |
| Resolution | 1%LEL |
| Response Time | T90<30s |
| Preheating Time | 30s |
| Sampling Method | Diffusion type |
| Explosion Protection | Ex d ⅡC T6 Gb |
| Signal Output | RS-485 digital output, 2 relay normally open contacts, 1 4~20mA current output |
| Operating Environment | |
| Operating Temperature | (-20~60)℃ |
| Humidity | ≤95%RH |
| Storage Temperature | (-40~85)℃ |
| Electrical Parameters | |
| Power Supply | DC12~24V |
| Display | LCD display |
