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Open Path Laser Gas Detector
An open path laser gas detector designed for area-wide leak detection and emissions monitoring across industrial sites.
Measures gas concentrations over long distances, providing early warning of leaks with reliable, low-maintenance performance.
The Open Path Laser Gas Detector is a line-of-sight gas detection system designed to monitor gas concentrations across large open areas, pipelines and site perimeters.
Using Tunable Diode Laser (TDL) technology, the system measures gas concentration along a defined path between a transmitter and reflector, enabling early detection of leaks and emissions over distances ranging from a few metres up to several hundred metres.
Unlike point detectors, open path systems provide area coverage, making them particularly effective for perimeter monitoring, leak detection and environmental compliance. The system offers fast response, high sensitivity and immunity to sensor poisoning or drift, ensuring reliable long-term performance in demanding industrial environments.
Allison Engineering supplies and supports open path gas detection systems as part of wider safety, emissions monitoring and process control solutions.
Key Features & Capabilities
- Open path (line-of-sight) gas detection across large areas
- Detection distances typically from 5 to 500 metres
- Fast response to leaks and gas releases
- High sensitivity with low detection limits
- No sensor drift or poisoning issues (laser-based measurement)
- Suitable for hazardous and industrial environments
- Flexible installation using transmitter and retro-reflector configuration
- Low maintenance and long-term stability
- Ideal for perimeter monitoring and leak detection applications
Typical Applications
- Perimeter gas leak detection
- Oil & gas facilities and pipelines
- Chemical plants and storage areas
- Biogas and landfill gas sites
- Hydrogen and hazardous gas monitoring
- Environmental emissions monitoring
- Tank farms and processing facilities
Over 45 Years in Operation
1000's of UK Installations
Supporting 100's of UK Sites
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