We Invent to Prevent.
We Invent to Prevent.
+39 030 353-14-23
Via Lorenzo Bernini 12, 25010 San Zeno Naviglio BS
 

SELMA Smart
Laser Methane Detector With Pump-Driven Sampling

SELMA Smart is a laser methane detector with active pump-driven sampling and wavelength locking technology for calibration-free CH4 detection in gas distribution networks.
 

Versatile, Easy-to-Use, Low-Maintenance Design

SELMA Smart is a laser methane detector with active pump-driven sampling engineered for reliable leak detection in gas distribution networks and field operations. Based on wavelength-locked TDLAS technology, it provides stable, methane-specific measurements without regular calibration. This reduces maintenance workload and keeps the instrument in continuous field service. The device can be installed on trolleys, electric carts, or vehicles to support mobile surveys across large areas.

Explosion-proof rating Ex ib IIC T3 Gb

SELMA Smart Key Features

  • TDLAS technology

    for stable and precise methane detection.

  • Wavelength locking

    for calibration-free operations.

  • Short response time

    for rapid detection of changes in methane concentration.

  • Low detection limit

    for detecting even small amounts of methane.

  • IP66-rated enclosure

    for dependable operation in demanding outdoor environments.

  • ATEX certified

    for use in hazardous areas.

SELMA Smart Main Specifications

  • TDLAS

    Detection technology

  • CH₄

    Target gas

  • 1 ppm

    Methane detection limit

  • 0.1 s

    Response time

  • IP66

    Protection rating

  • Ex ib IIC T3 Gb

    Ex marking

  • Up to 10 hours

    Battery life

  • -20 to +50 °C

    Operating temperature
View full specs

Why Choose SELMA Smart

  • Fast Methane Leak Detection

    Detect methane concentrations quickly and respond to changes in the measured environment without waiting for a long stabilization period.

  • Reliable Field Measurements

    SELMA Smart is designed for field use where measurements need to remain consistent across changing operating conditions.

  • No Routine Calibration

    Wavelength locking technology eliminates the need for routine calibration, reducing the time required to keep the instrument ready for use.

  • Built for Hazardous Areas

    The explosion-proof design allows SELMA Smart to be used in hazardous areas where conventional measurement equipment may not be suitable.

  • Long Operating Time

    A battery life of up to 10 hours supports extended field work without frequent recharging.

  • Flexible Deployment

    The compact instrument can be used as a portable detector or installed on a trolley, electric cart, or vehicle for mobile surveys.
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.
The SELMA Smart combines advanced TDLAS laser technology with an active pump system to deliver fast and reliable methane detection. It draws in air samples and passes a laser beam through the gas. Thanks to wavelength locking, the laser remains precisely tuned to methane’s absorption profile. As methane molecules absorb part of the laser light, a sensor measures the change and calculates the concentration of methane in the air sample.
The SELMA Smart combines advanced TDLAS laser technology with an active pump system to deliver fast and reliable methane detection. It draws in air samples and passes a laser beam through the gas. Thanks to wavelength locking, the laser remains precisely tuned to methane’s absorption profile. As methane molecules absorb part of the laser light, a sensor measures the change and calculates the concentration of methane in the air sample.
SELMA Dome G5 utilizes TDLAS (Tunable Diode Laser Absorption Spectroscopy) 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.

How SELMA Smart works

How SELMA Smart works
Laser
Mirror
Air sample intake
Air sample exhaust
Built-in TDLAS module

SELMA Smart applications

SELMA Smart is designed for operative monitoring of natural gas leaks in urban environments as well as at gas storage facilities and along pipelines
Gas Distribution
System
Gas Distribution
Station
Gas Processing
Plant
Gas Compression
Station
Gas
Storage
Transportation Gas Pipeline

SELMA Smart applications

SELMA Smart is designed for operative monitoring of natural gas leaks in urban environments as well as at gas storage facilities and along pipelines

  • Gas Distribution System

  • Transportation Gas Pipeline

  • Gas Distribution Station

  • Gas Processing Plant

  • Gas Compression Station

  • Gas Storage

Why leak detection matters

Methane monitoring, especially in urban areas, is essential not just for safety, but also for protecting the environment. Methane is a potent greenhouse gas, trapping heat much more effectively than carbon dioxide. Even small leaks, if left undetected, can grow and seriously impact the climate. Regular monitoring helps detect leaks early, prevent dangerous situations, and control emissions in accordance with environmental regulations including the EU Methane Regulation.
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