The Industrial & Commercial Point-Type Combustible Gas Detector is a high-performance gas monitoring device designed for hazardous environments such as petroleum, chemical, gas, environmental protection, and industrial production facilities.
Utilizing advanced TDLAS laser detection technology, the detector provides high accuracy, strong stability, and fast response, enabling real-time monitoring of combustible gas concentrations. The device supports multiple alarm modes to ensure timely alerts and enhanced operational safety.
It supports simultaneous detection of 1–6 gases and enables remote wireless communication via GPRS, 4G, NB-IoT, LoRa, or Bluetooth, making it suitable for long-term monitoring in complex industrial environments.
Key Features
Waterproof, dustproof, explosion-proof, vibration-resistant, and corrosion-resistant design
Intrinsically safe structure with anti-static and anti-electromagnetic interference protection
IP68 protection rating
Ultra-low power consumption design with battery operation, standby time over 5 years
Fully sealed waterproof structure preventing damage caused by flooding
Built-in pump-suction sampling (diffusion type optional)
Large-capacity data storage
Adjustable alarm thresholds with low alarm, high alarm, interval alarm, and weighted average alarm
Supports GPRS / 4G / NB-IoT / LoRa / Bluetooth wireless communication
Supports liquid level sensor, enabling automatic switching and water immersion alarm
Supports GPS / BeiDou positioning, movement alarm, tilt alarm, and location tracking
Real-time battery level display
Pump blockage detection to prevent gas path blockage and enable automatic switching
Optional high-precision temperature and humidity measurement
Simultaneous detection of 1–6 gases
Measurement units: PPM, mg/m³, Vol%, LEL%
Automatic zero tracking and multi-point calibration
Technical Specifications
| Parameter | Specification |
| Target Gases | Combustible gases, optional oxygen, toxic gases, CO₂, etc. Up to 6 gases can be combined |
| Detection Range | 0–100%LEL, 20%, 50%, 100%Vol optional, other ranges customizable |
| Resolution | 0.1%LEL, 0.01%Vol |
| Detection Principle | TDLAS Laser |
| Detection Frequency | Adjustable, standard once every 30 minutes |
| Accuracy | ≤ ±3% F.S (customizable) |
| Linearity | ≤ ±2% |
| Repeatability | ≤ ±2% |
| Uncertainty | ≤ ±2% |
| Response Time | T90 ≤ 20 s |
| Recovery Time | ≤ 20 s |
| Operating Environment | Temperature: -20°C to +70°C |
| Humidity | 0–99% RH |
| Temperature & Humidity Monitoring | Optional: Temp -40°C to +70°C; Humidity 0–100% RH |
| Power Supply | 4.2V high-capacity rechargeable Li-polymer battery or optional 3.6V lithium battery |
| Sampling Method | Built-in pump suction |
| Communication | GPRS / 4G / NB-IoT / LoRa / Bluetooth |
| Communication Frequency | Normal data: once every 24 hours; abnormal data: once per minute |
| Data Storage | Large-capacity storage |
| Protection Level | IP68 |
| Explosion Protection | Intrinsically Safe |
| Dimensions | Diameter 180 mm |
| Weight | Approx. 3 kg (varies depending on gas configuration) |
Standards
GBT 3836.1—2021 Electrical apparatus for explosive gas atmospheres – General requirements
GBT 3836.4—2021 Intrinsically safe equipment “i”
GB/T 50493-2019 Design standard for combustible and toxic gas detection and alarm in petrochemical industry
GB 15322.1-2019 Point-type combustible gas detectors for industrial and commercial use
Applications
Petroleum and petrochemical industry
Natural gas and gas distribution systems
Chemical plants and production workshops
Oil & gas storage and transportation facilities
Environmental monitoring systems
Industrial safety monitoring
Underground utility tunnels and confined spaces
