YBJ-500C, YBJ-800, and YBJ-1200 Explosion-Proof Laser Designators for Mining – Instruction Manual

YBJ-500C YBJ-800   YBJ-1200

Implementation Standard:   Q/HGY 22-2022

Publication Date: 2022

Safety Certification Number : MAK130007(YBJ-800) , MAK090019 (YBJ-500C)

MAK130005(YBJ-1200)

Explosion-proof certificate number : CMExC22.1761

I. Overview

1 ．Product Features

YBJ The explosion-proof laser pointer for mining is an instrument that integrates electronics, optics, precision mechanics, and other technologies. It features an aesthetically pleasing appearance, compact size, light weight, and explosion-proof characteristics. The instrument is installed in a fixed configuration and can be quickly secured to anchor bolts using a suspension assembly. The instrument is capable of 360° The range can be coarsely adjusted arbitrarily and finely tuned with high accuracy; adjustment is convenient, and braking is reliable. The product features a self-developed optical system and supports both red and green light sources, with spot size and effective range tailored to meet the requirements of underground mining operations. The instrument is equipped with an AC/DC switching power supply module that accepts a wide-range AC input. 127 V Power supply with protection function.

2 ．Implementation Standards

GB /T 3836-20 21 MT 870-2000 Q/HGY22-20 22 Enterprise Technical Requirements    Coal Mine Safety Regulations

3 ．Main Uses and Scope of Application

   The instrument is primarily used in underground coal mine roadways to provide precise positioning of the center and waist lines, as well as directional alignment for the installation of transport pipelines, conveyor belts, ventilation ducts, water pipes, and cable routes. It can also provide straight-line guidance for tunneling operations in subways, highways, railways, bridges, tunnels, culverts, oil pipelines, and drainage projects.
4 ．Instrument Model Definition

Note: YBJ-XXX Explosion-proof Laser Pointer for Mining

5 ．Operating Environment

Atmospheric pressure: 86kPa~110kPa

    Ambient temperature: 0 degrees Celsius ~+40 degrees Celsius

    Relative humidity: ≤95%RH (+25 degrees Celsius time)

    In the underground environment of coal mines containing a mixture of explosive gases (methane) and coal dust

    In an environment free of gases or vapors that would visibly degrade the insulation

    Pollution Level: 3 Level

II. Structural Features and Operating Principle

1 ．Structural features:

The instrument integrates the power supply module, optics, and precision mechanics into a single unit, featuring an aesthetically pleasing appearance, compact size, and lightweight construction.

Instrument coarse adjustment uses 360° The rotatable locking mechanism features a fixing rod and a suspension assembly with a locking device, enabling more convenient and quicker instrument fixation. The instrument can be finely adjusted via a micro-adjustment mechanism through an angle of no less than 1.5°. Make fine horizontal and vertical adjustments within the scope.

2 ．Working principle:

Connect the instrument to the supply voltage. AC127V Subsequently, the power supply module converts the input power into a DC voltage to energize the laser tube, generating a laser beam. This beam is then directed over long distances via an optical system, with a maximum range of 500. Rice, 800 Rice, 1200 Rice.

III. Basic Parameters and Performance Requirements

1 1. Basic parameters:

Installation method: Fixed

Explosion-proof type: Mine-used flameproof   Explosion-proof marking: Ex   d b I   Mb

Laser pointer operating mode: continuous operation

Rated supply voltage: AC 127V ( Voltage is in 85%~110% The instrument can operate normally during fluctuations.)

Input cable specifications: 3 times 1.0mm²

PE Size of the grounding conductor Not less than 1.5mm²

Operating current: ≤90mA （ YBJ-500C/ YBJ-800 ) ， less than or equal to 100mA （ YBJ-1200 )

Size: 265 mm× 73.5 mm×130mm

Weight: 3.4kg （ YBJ-500C/ YBJ-800 ), 3.5kg （ YBJ-1200 )

2 , Performance Requirements:

YBJ-1200 Laser pointer effective range: 1,200 m , at 1200m The diameter of the illuminated spot shall not exceed 80 mm. , the spot drift shall not exceed 10 mm. 。

YBJ-800 Laser pointer effective range: 800 m , at 800m The diameter of the illuminated spot shall not exceed 60 mm. , the spot drift shall not exceed 10 mm. 。

YBJ-500C Laser pointer with an effective range of 500 m , at 500m The diameter of the illuminated spot shall not exceed 50 mm. , the spot drift shall not exceed 10 mm. 。

The lateral and longitudinal adjustment ranges of the laser pointer’s fine-adjustment mechanism shall be no less than 1.5°

Optical power: not greater than 150 milliwatt

IV. Installation, Adjustment, and Use

1 ．Installation

Power Connection: Ensure that the supply voltage is within the AC voltage range specified on the nameplate; under no circumstances is it permissible to open the enclosure while energized in underground operations. Connect the instrument’s mining cable and grounding wire to the correct terminals, verify that all connections are secure and there are no loose or shorted circuits, then tighten all securing screws before applying power to illuminate the display.

（ 1 ) Perform coarse adjustments of the instrument in the vertical and horizontal directions as required by the orientation of the measuring instrument.

Vertical coarse adjustment: Loosen the set screw, rotate the instrument along the anchor bolt to align the laser beam in the vertical direction to the desired position (at the mid-chest line), then tighten the set screw.

Horizontal coarse adjustment: Loosen the bolt, slide the instrument along the mounting rod to align the laser beam horizontally to the desired position (at the midline), then tighten the bolt.

（ 2 ) Then, precisely adjust the direction of the laser beam according to the project requirements, as follows:

Horizontal adjustment: First lock the vertical adjustment screw, then simultaneously rotate the left and right horizontal adjustment screws in the same direction to move the light spot horizontally. Once properly adjusted, lock both horizontal adjustment screws.

Vertical adjustment: First lock the horizontal adjustment screw, then rotate the upper and lower vertical adjustment screws in the same direction to move the light spot vertically. Once properly adjusted, lock both screws.

   Please note: After the spot has been accurately adjusted in both the horizontal and vertical directions, the adjustment screws must be locked simultaneously. The instrument is factory-calibrated to ensure the spot remains within the specified range, so no on-site adjustment is required by the user. If adjustment is nevertheless necessary, please follow the procedures outlined in the troubleshooting section.

V. Safety Warnings

1 ．Do not look directly at the light-emitting window!

2 ．Do not open while energized!

VI. Description of Flame Pathway Dimensions

VII. Maintenance, Servicing, and Precautions

1 . When the instrument is not used for an extended period, it should be stored in a dry, non-corrosive environment.

2 ．The optical system is calibrated before the instrument leaves the factory; do not disassemble it arbitrarily. During transportation, handle with care to avoid severe vibration.

3 ．The instrument shall be operated at the specified input power voltage. Grounding screws are provided on both the inner and outer surfaces of the enclosure; reliable grounding must be ensured during installation. 。

4 ．Live maintenance is prohibited; when it is necessary to open the enclosure for maintenance, such work must be performed in a safe location.

5 ．The window glass of the laser output port should be regularly wiped with lens paper or a soft cloth to ensure the surface is clean and free of dust.

6 . During maintenance and repair, the instrument must never be opened while energized! Damage to the flameproof joint surfaces is strictly prohibited! Use yield stress. greater than or equal to 640 MPa (8.8 Level) fasteners; The model, specifications, and parameters of components must not be altered at will; care must be taken to prevent explosion hazards (note: do not Do not damage the flameproof surfaces or the fastening of the junction box cover; ensure that the sealing rings in the cable entry devices are not lost, and tighten the compression screws appropriately. During installation of the flameproof surfaces, apply anti-rust oil; verify that the adjustment mechanisms operate smoothly and that locking is secure; inspect the sealing-ring fasteners, and replace any damaged components promptly.

7. Applicable cable diameter: ø 8.0mm- ø 10.0mm；

8. When performing on-site grounding, the lead wires connected to the external terminal blocks shall be securely fastened, with an electrical clearance of not less than 4 mm, Creepage distance shall be no less than 5mm. Secure and properly route the connection cables; do not bend them to prevent strain or damage.

9. Avoid installation, storage, and use near heat or cold sources!

10. Regularly inspect the grounding connection to ensure it is reliable and that all screws are securely tightened and free from loosening. If the cable sealing grommet shows signs of aging, it should be replaced promptly.

11. Keep the equipment clean to prevent the accumulation of coal dust and other debris on the equipment surface and at the cable exit points; the surface temperature of the enclosure shall not exceed 150 degrees Celsius

VIII. Fault Analysis and Troubleshooting

“ “The instrument is not working.” Please inspect your instrument according to the table below. If the instrument still does not function properly after inspection, please contact maintenance.

Contact the branch or the manufacturer.

IX. Maintenance Services

1 . In principle, the maintenance of explosion-proof electrical products shall be carried out by the product manufacturer. If maintenance is performed independently, the maintenance entity must possess the necessary inspection and testing facilities, and may only proceed with maintenance after obtaining the consent of the product manufacturer. Following maintenance, explosion-proof parameter measurements and inspections shall be conducted, and the results must comply with GB /T3836 Only after meeting the requirements stipulated herein may it be put into use. The party responsible for product maintenance shall bear the corresponding liabilities following such maintenance.

2 ．The instrument is under warranty for 12 months from the date of invoice issuance. months, with lifetime maintenance and calibration after-sales service.

3 . Device failures arising from manufacturing defects during the warranty period will be replaced free of charge.

4 . During the warranty period, any damage not caused by product quality issues shall be subject to appropriate charges.

X. Product Packing List

1 ．Laser pointer 1 Taiwan 2 ．Fixed rod 1 One 3 ．Suspension Group 1 set

4 ．Hex key 1 One 5 ．Instrument case 1 One 6 ．Product Manual 1 portion

7 ．Product Certificate of Conformity 1 Part (the suspension assembly includes a screw plug, a retaining ring, and a locking seat)

Harbin Optical Instruments Factory Co., Ltd.

HARBIN OPTICAL INSTRUMENT FACTORY LTD.

ground   Address: Jingwei Third Road, Daoli District, Harbin City 32 Number

Post   Editor: 150010

Electricity   Words: 400-030-0319         0451-84286338      

network   Address: www.hrboptical.com           

E-mail： hopt@hopt.cn