The new multi-perpose portable sniffer SELMA Duo for walking and vehicle surveys (Methane + Ethane)
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We Invent to Prevent.
We Invent to Prevent.
+39 030 353-14-23
Via Lorenzo Bernini 12, 25010 San Zeno Naviglio BS

SELMA MPB

High-precision laser methane detector for vehicle bumper mounting
 
 
 

Vehicle-mounted laser methane sniffer

Need maximum sensitivity for detecting natural gas leaks in urban environments? SELMA MPB is the perfect solution. This highly accurate, laser-based detector identifies methane in the air with a sensitivity of 0.1 ppm. It’s ideal for inspecting gas networks, detecting leaks, and monitoring locations such as gas stations, industrial facilities, and underground parking areas. SELMA MPB supports micro-leak detection, environmental monitoring, GPS tracking, and seamless integration with electronic maps. For broader coverage, SELMA MPB can be paired with SELMA Dome or SELMA Mini, ensuring full control at every stage of inspection.

SELMA MPB key features and advantages

  • Methane detection sensitivity 0.1 ppm

  • Max vehicle speed 60 km/h

  • Internal memory for saving inspection data

  • Fully automated inspection process

  • Integrated software for leak monitoring, route mapping, and easy data reporting

  • Built-in GPS receiver for accurate leak location

  • Mount to any type of chassis

  • Can be used together with SELMA Dome or SELMA Mini remote laser methane detectors

  • No calibration required

Laser beam
Air sample
Mirrors

How SELMA MPB works

SELMA MPB 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.
Stage one: air intake delivered to the optical unit.
Stage one: a bumper-mounted air intake system collects and filters air samples, which are then delivered to the optical unit.
Stage two: an infrared laser is repeatedly reflected from two mirrors to detect methane in the air sample.
Stage two: inside the SELMA MPB optical unit, an infrared laser is repeatedly reflected from two mirrors to detect methane in the air sample.
Air intake system
TDLAS uses a laser with a specific wavelength to detect gas by measuring how much light is absorbed as it passes through it. The system then calculates the concentration of the gas based on this absorption.

Where SELMA MPB applies

SELMA MPB is designed for monitoring natural gas leaks in urban environments as well as on gas storage facilities and pipelines

  • City inspections

  • Countryside inspections

  • Underground gas storages

  • Transportation gas pipelines

Where SELMA MPB applies

SELMA MPB is designed for monitoring natural gas leaks in urban environments as well as on gas storage facilities and pipelines
Underground
gas storages
Countryside inspections
Transportation gas pipelines
City
inspections

Why leak detection matters

Continuous methane monitoring, especially in urban areas, 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 regular monitoring is important: it helps to detect leaks as soon as they occur, prevent dangerous situations and control emissions in accordance with environmental regulations.
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