Can a methane detector detect other gases?

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. TDLAS technology targets the specific infrared absorption wavelength of methane molecules, eliminating false alarms from other gases.

Is laser radiation hazardous to the eyes?

The measurement laser is completely safe, corresponding to Class 1 under IEC60825-1:2014 standard. The guide laser (green pointer) is Class 3R and requires standard precautions - never look directly into the laser emission aperture.

Does the remote laser detector work at night, in rain, fog and snowfall?

Yes, the instrument works in all weather conditions. The TDLAS technology operates at a specific infrared wavelength that is not affected by ambient light conditions, precipitation, or fog.

Is there impact of water vapor on the measurements?

No, there is no impact. The laser wavelength (1653 nm) is specifically tuned to methane absorption lines and does not overlap with water vapor absorption bands, ensuring accurate measurements in humid conditions.

Do I need to calibrate detectors before commissioning?

No. The detector contains a reference cell with methane inside and calibration is performed automatically at each start-up and during operation. This ensures accurate and reliable gas leak detection without manual calibration procedures.

Why is a laser detector better than a common sniffer?

Laser detectors work remotely from distances up to 100 meters, meaning there is no direct contact with the hazardous environment. This allows operators to inspect hard-to-reach areas, elevated equipment, and fenced-off zones without entering potentially dangerous spaces, significantly improving safety during inspections.

Which models comply with EU Methane Regulation 2024/1787?

All explosion-proof models (LM Smart, LPD M-30, LPD M-60, LM-100, SELMA Smart) meet the requirements for LDAR Type 2 surveys under EU Methane Regulation 2024/1787. The LM Smart specifically complies with Type 2 LDAR requirements for both above-ground and underground inspections, with a minimum detection limit of 5 ppm·m or 0.5 g/hr.

How do I choose between 30m, 60m, and 100m detection range?

Select based on your typical inspection distances. The 30m range (LPD M-30, LM Smart) suits most pipeline walks and facility inspections. Choose 60m (LPD M-60) for elevated equipment and medium-sized facilities. The 100m range (LM-100) is ideal for across-fence surveys, large industrial sites, and situations where maximum standoff distance improves safety.

Can I connect the detector to mobile devices?

Yes. LM Smart connects via the LeakFinder app (iOS/Android) for leak quantification, GPS positioning, and cloud data storage. LPD M-30, LPD M-60, and LM-100 support Bluetooth data logging and transfer for documentation and compliance reporting.

Handheld Laser Methane Detectors

Handheld laser methane detectors use TDLAS technology to instantly detect natural gas leaks from a safe distance (up to 100 m). These portable devices allow operators to pinpoint CH4 concentrations through glass and in hard-to-reach areas without entering hazardous zones. EU Methane Regulation compliant.

Choose a detector

Handheld Laser Methane Detectors for Demanding Industries

From natural gas and energy to utilities and infrastructure, many industries rely on portable methane detectors to keep their operations safe and efficient. Pergam’s laser-based solutions meet this need with precision, speed, and proven reliability. Powered by TDLAS technology, they detect methane remotely and selectively even at low concentrations. Built for demanding field conditions, Pergam detectors feature Bluetooth connectivity, integrate with the LeakFinder app, and can be mounted on vehicles or trolleys for large-area inspections, depending on the model.

Handheld laser methane detectors key features and advantages

Compact and lightweight build

for convenient everyday carrying
Fast response and large measurement range

for efficient leak detection
TDLAS technology

for methane-selective, interference-free measurements
Explosion-proof design (LM Smart, LPD M-30/60, LM-100, SELMA Smart)

for safe use in hazardous environments
High sensitivity

detects methane concentrations as low as 5 ppm×m
Wavelength locking (SELMA Smart)

ensures long-term stability without regular calibration
Dust- and moisture-proof construction

for reliable outdoor operation
LeakFinder app (LM Smart)

for online leak quantification
Bluetooth connectivity (LPD M-15/30/60, LM-100)

for data logging and transfer

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.

Laser methane detectors use TDLAS (Tunable Diode Laser Absorption Spectroscopy) technology to provide precise methane detection with a tunable diode laser. The laser emits a narrow beam of light at a wavelength that matches methane’s absorption profile. As the beam passes through the gas, some of the light is absorbed by the molecules. A sensor then captures the reflected light, and by analyzing how much is absorbed, the system calculates the methane concentration.

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 laser methane detectors work

Applications for handheld laser methane detectors

Portable laser methane detectors are designed for operative monitoring of methane and 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

Applications for handheld laser methane detectors

Portable laser detectors are designed for operative monitoring of methane and 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

CHOOSE YOUR DETECTOR

Compare handheld TDLAS models by range (15–100 m), response time, Ex/IP rating, and data workflow (app, Bluetooth, storage).

Complex of LaserMethane Smart detector & LeakFinder app

Quantify Leak Flow Rates and Generate Persuasive Evidence with the LeakFinder App

Laser Methane Smart features

Measuring sound and light blinking increase the visibility of the measuring point
Stable measurement results with constant monitoring of oscillation wavelength by a built-in gas cell
Remote, high-speed and selective methane detection up to 30 m (98.4 ft) with 0.1 s response time even at low concentrations thanks to TDLAS
Self-testing and calibration, operates on standard rechargeable AA batteries instead of costly custom ones
The LeakFinder app makes it easy to locate natural gas leaks with laser detectors and quantifies methane emissions online at the facility in grams per hour

Learn more

Palm-sized remote laser methane detector

LPD M-15 – a compact and lightweight solution for professional methane detection. Small enough to take anywhere, yet strong enough to detect leaks instantly from up to 20 meters away. Powered by advanced TDLAS technology, it delivers ultra-fast response and highly selective measurements that react only to methane, even through glass. With a rugged aluminum body, IP65 protection, and long battery life, the LPD M-15 makes methane monitoring fast, accurate, and hassle-free.

LPD M-15 features

Durable aluminum alloy housing
Detection distance up to 20 meters
Small size and weight
Explosion-proof housing II 3 (1) G EX ic [op is Ga] IIA T4 Gc
Impact, moisture and dust resistance (IP65)
Fast response and large measurement range
Bluetooth data transmission

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Small and robust remote laser methane detector with detection range up to 20 m

Compact yet powerful methane detector for harsh environments. Its IP66 rating allows reliable operation in dusty and wet conditions, while its 5 ppm×m sensitivity, enabled by modern TDLAS technology, ensures accurate leak detection results. This makes the LPD-20M well-suited for natural gas facilities where reliability and precision are critical.

LPD-20M features

Durable aluminum alloy housing
Detection distance up to 20 meters
Small size and weight
Up to 8 hours of battery life
Impact, moisture and dust resistance (IP66)
Fast response and large measurement range

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Handheld explosion-proof remote laser methane detector with detection range of up to 30 m

The LPD M-30 detects methane at distances of up to 30 meters using reliable TDLAS technology. Its explosion-proof construction ensures safe use in hazardous locations, reducing the need to approach potential leak sources directly. Built-in Bluetooth enables convenient data logging and wireless transfer, so inspection records are easy to capture and share. Durable, precise, and straightforward to use, the LPD M-30 helps teams work safer and faster in demanding field environments.

LPD-M30 features

Explosion-proof housing Ex II 3 (1) G EX ic [op is Ga] IIA T4 Gc
Detection distance up to 30 meters
Small size and weight
Powerful battery
Impact, moisture and dust resistance (IP65)
Fast response and large measurement range
Bluetooth recording and data transfer function
Simple and clean user interface

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Handheld explosion-proof remote laser methane detector with detection range of up to 60 m

The LPD M-60 is built for situations where distance and safety matter. It detects methane at ranges up to 60 meters using reliable TDLAS technology, making it easy to check elevated, fenced-off, or hard-to-access areas without getting too close. Its explosion-proof design allows safe use in hazardous locations, and Bluetooth capability streamlines data logging and wireless reporting. With extended reach and straightforward operation, the LPD M-60 helps field teams work safely and efficiently.

LPD M-60 features

Explosion-proof housing Ex II 3 (1) G EX ic [op is Ga] IIA T4 Gc
Detection distance up to 60 meters
Small size and weight
Powerful battery
Impact, moisture and dust resistance (IP65)
Fast response and large measurement range
Bluetooth recording and data transfer function
Simple and clean user interface

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Handheld, explosion-proof laser methane detector with 100 m detection range

The LM-100 detects methane from up to 100 meters away using reliable TDLAS technology, allowing operators to inspect hard-to-reach areas without approaching the source. The device is explosion-proof and supports Bluetooth data logging and transfer. With its long detection range and user-friendly operation, the LM-100 helps teams work safely and efficiently during routine and emergency inspections.

LM-100 features

Explosion-proof housing Ex II 3 (1) G EX ic [op is Ga] IIA T4 Gc
Detection distance up to 100 meters
Small size and weight
Powerful battery
Impact, moisture and dust resistance (IP65)
Fast response and large measurement range
Bluetooth recording and data transfer function
Simple and clean user interface

Learn more

Pump-suction laser methane detector with wavelength locking

The SELMA Smart is a pump-suction laser methane detector 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 the need for regular calibration. This reduces maintenance workload and keeps the instrument in continuous field service instead of frequent workshop visits. The device can be installed on trolleys, electric carts, or vehicles to support mobile surveys across large areas. The result is higher efficiency, longer operational life, and a more streamlined leak detection workflow for utility teams.

SELMA Smart features

Advanced wavelength locking technology for calibration-free operation
Up to 10 hours of operation on a single battery charge
Explosion-proof housing Ex ib IIC T3 Gb
Small size and weight
Moisture and dust resistance (IP66)
Fast response time 0.1 s

Handheld Laser Methane Detectors

Handheld Laser Methane Detectors for Demanding Industries

Handheld laser methane detectors key features and advantages

Compact and lightweight build

Fast response and large measurement range

TDLAS technology

Explosion-proof design (LM Smart, LPD M-30/60, LM-100, SELMA Smart)

High sensitivity

Wavelength locking (SELMA Smart)

Dust- and moisture-proof construction

LeakFinder app (LM Smart)

Bluetooth connectivity (LPD M-15/30/60, LM-100)

How laser methane detectors work

Applications for handheld laser methane detectors

Applications for handheld laser methane detectors

Gas Distribution System

Transportation Gas Pipeline

Gas Distribution Station

Gas Processing Plant

Gas Compression Station

Gas Storage

Specifications

FAQ