Handheld portable long-distance laser remote sensing methane detector

Handheld portablelong-distanceLaser remote sensing methane detector

JK40-CH4-YRS

1 Overview

The handheld remote methane telemetry instrument adopts TDLAS (laser spectroscopy) technology, which quantitatively measures the methane gas concentration in the target area by absorbing specific wavelength lasers through methane gas, and quickly monitors the methane gas concentration in the area. The handheld device can be carried by the inspection personnel and can flexibly and dynamically detect the methane concentration in the inspection area.

Due to its obvious advantages in operating distance, detection sensitivity, and endurance, it is suitable for inspecting methane leaks in large-scale industrial scenarios such as oil and gas.

The standard for this product is:

n GB3836.1-2021Explosive Environment 1 Part: General Requirements for Equipment

n GB3836.4-2021Explosive Environment 4 Part: Made of intrinsic safety type“i”Protected Equipment

1.1 Product specifications and models

The model composition of this product is:JK40-CH4-YRS

n The operation of this product will not cause harmful interference.

n The operation of this product is to some extent unaffected by external interference, even adverse interference.

2. Structural characteristics and working principle

2.1 Product Composition

As shown in the figure 2- 1 As shown.

image 2- 1 Product Composition Diagram

2.2 Working principle

The working principle of this product is that when the instrument is in operation, it emits a specific wavelength range to the outside (the measured gas is different, and the center wavelength is also different)The detection laser of the same type encounters reflective objects such as the ground, valves, etcDiffuse reflection occurs after pipes, walls, etc., partially stimulatingThe light returns to the detection unit of the instrument. If there is a measured gas within the beam pathThe air mass formed by the leakage will have an impact on the detection laserGenerating absorption, the ratio of unabsorbed light to absorbed light is proportional to the concentration of the air massThe degree is proportional to the function, and by calculating the ratio, the inverse is obtainedIntroduce the concentration of air masses. As shown in the figure 2-2 As shown.

image 2-2Schematic diagram of working principle

Note:

n The detection value of this product is the overall concentration of the gas being measured within the beam path, measured in units of ppm·m, i.e. gas concentration（ppm） And the size of the air mass（m）The product of.

n The material and angle of the reflector will affect the amount of light returned, which in turn will affect the size of the detection value.

n The distance between this product and the reflector will affect the amount of light returned, which in turn will affect the size of the detection value.

n Weather factors such as wind, rain, and snow can affect the amount of light returned, which in turn can affect the size of the detection value.

3 Main Performance and Technical Indicators

3.1 Mechanical indicators

3.2 Electrical specifications

3.3 Main performance indicators for testing (Taking methane as an example)

3.4 Size and Weight

3.4.1 Product Dimensions

Product dimensions as shown in the diagram 3- 1 As shown.

image 3-1 Product Dimensional Drawing

3.4.2 Product weight

Unit weight:600g(Net weight)

Transport weight:1500g(Gross weight)

4 unboxing

Please check the integrity of the packaging before opening the box.

After opening the box, please follow the table 4- 1 Check and confirm the content.

table 4-1 Checklist for unboxing contents

Application Scenario: