We Invent to Prevent.
We Invent to Prevent.
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Via Lorenzo Bernini 12, 25010 San Zeno Naviglio BS
LMS Open-Path
Remote laser methane detector with retroreflector for monitoring pipelines in hard-to-reach areas and gas storage tanks
Continuous monitoring of pipelines leaks
The LMS Open-Path is an advanced laser methane detector for pipelines and gas storage facilities. Traditional open path systems use separate transmitters and receivers to detect gas leaks by sending an infrared beam between them, and the target gas in between triggers an alarm. LMS Open-Path simplifies this by combining both components into one unit and using a retroreflector to reflect the laser beam back. This smart design provides a detection range of up to 1 km.
LMS Open-Path key features and advantages
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Fully automatic
LMS Open-Path operates autonomously and does not require a separate power source. -
Fast detection
Detects gas leaks faster than conventional methods. Detection time 0.1 sec. -
Non-stop operation
LMS Open-Path works 24 hours a day all year round. -
Sensitive to methane only
The LMS is precisely calibrated to detect methane and ignores other gases, providing accurate readings without false alarms. -
Network monitoring
LMS Open-Path can be integrated into a mesh network with centralized control, allowing the operator to receive real-time data from all connected devices. -
Dust and rain protection
LMS Open-Path meets the IP66 protection standard and safe from harsh weather conditions like rain, snow, or sandstorms. -
Receiver and transmitter self-test mode
To ensure accurate methane detection. -
High sensitivity
LMS Open-Path determines the leakage of any mixture in which 1% methane is present. -
Various useful features
Availability of heated optics, non-volatile memory, real time clock, auto-zero and built-in signal processing algorithm
How LMS Open-Path works
LMS Open-Path utilizes TDLAS technology
TDLAS (Tunable Diode Laser Absorption Spectroscopy) is a technology that enables precise gas detection using a tunable diode laser. The laser emits a narrow beam of light at a wavelength that matches the absorption profile of the target gas. As the beam passes through the gas, some of the light is absorbed by its molecules. A sensor then captures the reflected light, and by analyzing how much was absorbed, the system determines the gas concentration.
Operating principle of the LMS Open-Path
How LMS Open-Path works
LMS Open-Path utilizes TDLAS technology. TDLAS (Tunable Diode Laser Absorption Spectroscopy) enables precise gas detection using a tunable diode laser.
The laser emits a narrow beam of light at a wavelength that matches the absorption profile of the target gas.
As the beam passes through the gas, some of the light is absorbed by its molecules.
A receiver then captures the reflected light, and by analyzing how much was absorbed, the system determines the gas concentration.
The laser emits a narrow beam of light at a wavelength that matches the absorption profile of the target gas.
As the beam passes through the gas, some of the light is absorbed by its molecules.
A receiver then captures the reflected light, and by analyzing how much was absorbed, the system determines the gas concentration.
As the beam passes through the gas, some of the light is absorbed by its molecules.
A sensor then captures the reflected light, and by analyzing how much was absorbed, the system determines the gas concentration.
A sensor then captures the reflected light, and by analyzing how much was absorbed, the system determines the gas concentration.
LMS Open-Path utilizes TDLAS technology. TDLAS (Tunable Diode Laser Absorption Spectroscopy) enables precise gas detection using a tunable diode laser.
The laser emits a narrow beam of light at a wavelength that matches the absorption profile of the target gas.
The laser emits a narrow beam of light at a wavelength that matches the absorption profile of the target gas.
Where LMS Open-Path applies
LMS Open-Path is designed for continuous monitoring of pipelines and other gas infrastructure facilities, such as:
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Underground gas storages
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Gas distribution stations
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Gas processing plants
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Gas compression stations
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Transportation gas tankers
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Gas storages
Where LMS Open-Path applies
LMS Open-Path is designed to detect leaks along remote sections of main gas pipelines and to monitor gas storage tanks.
The oil and gas industry constantly deals with the challenge of spotting gas leaks in remote sections of major pipelines. Since these pipelines often run through hard-to-reach areas, it’s crucial to detect leaks automatically and from a distance to keep operations safe and running smoothly.
Another key challenge in the industry is detecting and controlling leaks from storage tanks. The LMS Open-Path is perfectly suited for this task. One example of how the device can be used for tank monitoring is shown below.
Another key challenge in the industry is detecting and controlling leaks from storage tanks. The LMS Open-Path is perfectly suited for this task. One example of how the device can be used for tank monitoring is shown below.
LMS Open-Path application for tank monitoring
Four sensors installed around the storage tank roof measure methane concentration along the entire laser path, fully covering the tank’s perimeter. This setup not only detects the presence of methane, but also helps determine the direction and spread of the gas cloud. When used together with level and flow detectors, the system can estimate the probability of the cloud reaching an explosive concentration as it moves away from the tank. All data is shown in real time on the operator’s workstation.
Underground
gas storages
gas storages
Gas distribution
stations
stations
Gas processing
plants
plants
Gas compression
stations
stations
Gas
storages
storages
Transportation gas tankers
Why leak detection matters
Continuous methane monitoring is essential not only for safety but also for environmental protection. Methane is one of the most potent greenhouse gases, trapping heat much more efficiently than carbon dioxide. Even small leaks, if undetected, can increase and have a serious impact on the climate. This is why 24/7 monitoring is important: it helps to detect leaks as soon as they occur, prevent dangerous situations and control emissions in accordance with environmental regulations.
FAQ
Honest answers to important questions
No, each device is designed to detect a specific gas. This provides a 100% probability of leak detection of methane and not any other gas.
Laser radiation is completely safe, it corresponds to class 3R.
Yes, the instrument works in all weather conditions.
No, there is no impact.
No. The detector contains a reference cell with methane inside and calibration is performed at each start-up and during operation.
It works remotely. There is no direct contact with the hazardous environment.
Direct range of the LMS laser detector is 492 feet (150 meters); 196 feet (60 meters) for LMS mini. This distance can be increased using special repeaters to 1093 yards (1,000 meters) and 656 yards (600 meters) respectively.
Yes, because glass allows the transmission of infrared radiation.
LMS Open-Path is not explosion-protected.
Contact us
You can order the equipment or ask questions here