Hanwei HRLD Series Handheld Laser Methane Detectors PDF
Document Details
Uploaded by StimulatingSitar
Tags
Summary
This document provides information on Hanwei's handheld laser methane detectors, including their features, specifications, and applications. The document details the use of these devices for remotely measuring methane gas leaks in various industries like gas pipelines, oil refineries, and chemical plants. Diagrams illustrate the detection process, highlighting the emission, reflection, and detection of the laser beams in relation to the gas leaks.
Full Transcript
# Handheld Laser Methane Detectors ## Main Application - City gas pipeline - Gas pipeline in alley - Gas transmission pipeline ## Features - Small size and lightweight design, easy to carry - Good selectivity, response only to methane - Sensitivity of 5ppm.m - Fast response, no alarm delay -...
# Handheld Laser Methane Detectors ## Main Application - City gas pipeline - Gas pipeline in alley - Gas transmission pipeline ## Features - Small size and lightweight design, easy to carry - Good selectivity, response only to methane - Sensitivity of 5ppm.m - Fast response, no alarm delay - Selectable unit of PPM.M, LEL.M and VOL.M - Adopts spotter beam to improve visibility of long distance - Self-test function - Low voltage alert - Low consumption ## Application It's used to remotely check the methane gas leakage in the industries of municipal gas pipeline, oil refineries, chemical plants in petroleum and petrochemical industry, metallurgical industry, power industry etc. ## Specifications | Feature | Value | | --- | --- | | Measuring gas | Methane | | Detection range | 0~100000ppm.m | | Sensitivity | 5ppm.m | | Response time | HRLD200: T90<0.1s HRLD300: T90<0.1s HRLD600: T90<0.05s | | Humidity| ≤99%RH | | Working temperature | HRLD200: -20°C~50°C HRLD300/ HRLD600: -30°C~50°C | | Power supply | Rechargeable Lithium battery | | Display | LCD screen | | Alarm mode | Audible, visual and vibration alarm | | Penetration | Objects that can be penetrated by light without affecting detection | | Ingress protection | IP66 | | Ex grade | Ex ib IIB T4 Gb | | Detection distance (can be OEM) | HRLD200: 0~50m HRLD300: 0~100m HRLD600: 0~150m | ## Detection - The handheld laser methane detectors can be used to detect gas leaks from a distance. - It works by emitting a laser beam towards the potential leakage point. - The beam is reflected back to the detector. - If the gas concentration is high enough, the reflected beam will change in a way that the detector can recognize it. - It is common that the detector is equipped with a display that shows the gas concentration, the location data and a visual alarm to alert the user. ## Diagram Details - The diagram shows a handheld laser methane detector being used to detect a gas leak. - The detector emits a laser beam towards the pipeline. - This is called the "emission beam". - The laser beam then interacts with the gas molecules, and the detector can detect the gas molecules. - This is called a "background reflector". - The laser beam will then be reflected back to the detector. - The detector measures the amount of reflection, it can tell if there is a gas leak. - This is called the "reflected beam". - The red lines in the diagram represents the laser from detector to leaking pipeline. - The yellow lines represent the pipeline. - The gray line represents the ground which the pipeline is located on. - The oval shapes show the emitted gas. The numbers represent the concentration of the gas.
