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Torch-Style Laser Methane Detector

Torch-Style Laser Methane Detector

【Introduction】50 m torch-style configuration; 7075 aluminum housing, 350 g and 5 ppm·m sensitivity.

Product model: LJY50

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Product Overview

LJY50 is a torch-style handheld laser methane detector in the 50 m configuration. It uses tunable diode laser absorption spectroscopy (TDLAS) to detect methane along the laser path, supporting remote inspection of suspected leaks. Typical field tasks include gas-network inspections, valve and regulator checks, and surveys of elevated or difficult-to-access pipework.

The transmitter and receiver share a probe. The laser is aimed at a surface beyond the inspection area, and the receiver measures the returned light. Methane in the optical path absorbs part of the laser signal. The instrument calculates a path-integrated methane reading, displayed in ppm·m.

Key Features

  • Typical response time of 0.015 s, with a specified maximum of 0.03 s.
  • Built-in reference gas cell monitors the laser wavelength for self-calibration.
  • Narrowband optical filtering helps reduce sunlight interference.
  • Automatic optical-signal adjustment accommodates changes in reflected light strength.
  • 7075 aluminum-alloy body with a hard-anodized surface; approximately 350 g.
  • Single-button operation, stored measurement records and a standard Bluetooth-connected app.
  • Optional laser ranging and spare rechargeable batteries.

Applications

  • Methane and methane-containing gas leak inspections around gas stations, distribution networks and pressure-regulation facilities.
  • Checks around valve pits, process areas, chemical and refining facilities, and overhead pipework.

Technical Specifications

ParameterSpecification
ModelLJY50
Form factortorch-style
Configured measuring distance50 m
Detection principleTDLAS
Response time0.015 s typical; 0.03 s maximum
Detection range0–100000 ppm·m
Sensitivity5 ppm·m
Operating temperature−20 to 50 °C
Operating pressure40–160 kPa
Operating humidity≤98% RH
Protection ratingIP68
Explosion-protection markingEx ib IIC T4 GB
Standby time13–17 h
Body dimensionsLength 190 mm × diameter 54 mm
Housing material7075 aluminum alloy
Weight350 g
Operating voltage4.5–5.5 V
Power consumption1.2–2.5 W
Battery capacity4 Ah
Detection laserClass I
Indicator laserClass IIIA
Basic error0–1000 ppm·m, ±50 ppm·m; above 1000 to 100000 ppm·m, ±10% of true value

Related Models

ParameterSpecification
LYJ30Torch-style, 30 m
LJY50Torch-style, 50 m
LYY50Pistol-style, 50 m
LYY100Pistol-style, 100 m
LYY150Pistol-style, 150 m
LYY200Pistol-style, 200 m

Operation and Support

Switch on the detector, aim the laser at a surface beyond the suspected leak area, and scan the inspection path while observing the methane reading. Use the Bluetooth app to review stored measurement data. Laser ranging is available as an option.

Product Enquiries

Tell our sales representative your required inspection distance, preferred instrument style and inspection environment to discuss the appropriate model.

Sales Contact: Arthur
Email: Arthur@hmdzkj.cn
Tel / WhatsApp / WeChat: +86 18353666151


Article address:https://www.environmentinstrum.com/laser-methane-detector/ljy50-laser-methane-detector.html