Instruction Manual for the YHL90360S(A) Intrinsically Safe Electronic Geological Compass for Mining

Precautions:

1 , In complex ambient magnetic fields, the accuracy of compass measurement data can be affected.

2 This product is protected by multiple patents; unauthorized imitation is strictly prohibited, and violators will be held legally accountable!

3 This product is intrinsically safe for mining use. Without the manufacturer’s permission, unauthorized repair or replacement of components is prohibited, and the manufacturer shall not be liable for any resulting consequences.

4 This product is equipped with a laser. Direct exposure of the laser beam to the eyes is strictly prohibited to prevent eye burns.

5 Do not replace the battery when explosive gases may be present.

6 , manufactured solely by Nantong NanZhuo Electronic Technology Co., Ltd. PL123450/3.7V/1.6Ah Lithium manganese oxide lithium-ion battery.

7 Do not charge in hazardous locations.

8. Use only the manufacturer-supplied XY-0033B charger for charging.

Data meaning:

Azimuth It is the horizontal angle measured clockwise from the north direction line at a given point to the target direction line.

Roll angle: When the instrument is placed horizontally and rotated about its longitudinal central axis, the resulting angle is the roll angle. In other words, with the instrument positioned in its normal horizontal orientation, the roll angle is the angle formed by tilting the instrument to the left or to the right.

Pitch angle : When the instrument is placed horizontally and rotated about its transverse central axis, the resulting angle is the pitch angle. Specifically, with the instrument in its forward-facing horizontal position, the pitch angle is the angle formed when the instrument tilts in the fore-and-aft direction.

Magnetic declination : The angle of deviation between geographic azimuth and magnetic azimuth; the magnetic declination varies depending on the geographic location.

Atmospheric pressure, altitude, temperature : Refers to the instrument’s current environmental parameters.

Relative height : Operate the instrument to set its current position to 0 The elevation datum, followed by the elevation difference resulting from the instrument being moved upward or downward.

I. Quick Usage

1.1 Open the instrument’s top cover.

1.2 Continue to press Key appointment 3 seconds, the instrument can be turned on, LCD It will display in sequence: Factory Logo, Main Menu, Data.

1.3 According to The key allows switching between the pages of three sets of real-time data.

1.4 In < Azimuth > On the display page, press key, can < Point laser >/< Line laser >/< Turn off the laser > Switch among three modes. Use laser dot (or line) targeting to achieve non-contact measurement, making it particularly well-suited for low-light environments.

1.5 In < Azimuth > On the display page, press Key, can < Maintain >/< Refresh > Current data.

1.6 With the instrument turned on, continuously press and hold Key appointment 3 Seconds, the instrument can be turned off.

II. Functions and Uses

This product is a portable, intrinsically safe, three-dimensional laser electronic geological compass that provides real-time displays of azimuth, roll angle, and pitch angle. To facilitate field measurements, it also features auxiliary measurements of atmospheric pressure, altitude, and temperature, making it an essential tool for geologists.

This product features tilt-compensated azimuth measurement, enabling accurate measurements even when the device is not held in a perfectly horizontal position.

This product features a low-power design that extends battery life; its enclosure is dust- and moisture-proof and includes additional auxiliary measurement functions; and its streamlined menu layout, user-friendly software settings, and versatile features such as laser spot and line marking provide a convenient and intuitive user experience.

Standard number for this product: Q/HGY 29-2024 ，GB/T3836.1-2021 Explosive Atmospheres Part 1 Section: General Requirements for Equipment, GB/T3836.4-2021 Explosive Atmospheres Part 4 Section: Composed of intrinsically safe “ I “Protected devices,” MT209-1990 Coal Mine Communication . Detection . General technical requirements for the control of electrical and electronic products.

III. Product Features

3.1 Simple operation and clear, easy-to-read measurement data.

3.2 The azimuth measurement feature includes tilt compensation, so absolute horizontal alignment is not required when measuring azimuth.

3.3 The digital display also retains some of the functionality of a mechanical compass, making it more versatile.

3.4 Measurement of auxiliary air pressure, altitude, temperature, and relative height yields more comprehensive data.

3.5 The tilt angle can be zeroed.

3.6 Low-power design, for daily use 1~2 Hours, can work approximately 15 Heaven.

3.7 Delayed automatic shutdown time setting: 30s~999s Adjustable, Note: Set to 0s , the instrument will remain in operating mode. 。

IV. Product Classification

4.1 Model

4.1.1 Model Meaning

Example: YHL90/360S denotes a mine-use intrinsically safe electronic geological compass with a pitch and roll measurement range of 0 to ±90° and an azimuth measurement range of 0 to 360°.

4.1.2 Explosion-proof type: intrinsically safe for mining use; Explosion-proof marking: Ex i b IMb

4.1.3 External dimensions: 80mm times 70mm times 37.5mm ; Weight: 270 g ; Housing material: aluminum alloy 6061T6

4.2 Structure

V. Operating Environment

5.1 Ambient temperature: 0°C to +40°C;

5.2 Relative humidity: ≤95% RH (+25°C);

5.3 Ambient atmospheric pressure: 80 kPa to 106 kPa;

5.4 In underground coal mine environments containing a mixture of explosive gases (methane) and coal dust;

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

5.6 Pollution level: Level 3;

5.7 Use in an environment containing ferromagnetic materials may affect measurement accuracy.

VI. Main Performance and Basic Functions

6.1 Main Performance

6.1.1 Intrinsically Safe Parameters: Battery specifications: 1 PL123450 lithium manganese oxide lithium-ion battery, 3.7 V, 1.6 Ah; U ₀ : 4.3V I ₀ : 1.2A.     

6.1.2 Rated operating voltage: 3.7 V; operating current: ≤50 mA.

6.1.3 The battery for this product is manufactured by Nantong NanZhuo Electronic Technology Co., Ltd. and is model: PL123450 Lithium Manganese Oxide Lithium-Ion Battery （ Single Festival 3.7V/1.6Ah), Equipped with dual overcurrent and overvoltage protection circuits, rated voltage 3.7V . Use single-component, room-temperature-vulcanizing silicone rubber 704 Stick The compound pouring and sealing process is fixed, with a pouring and sealing thickness greater than  1mm。

6.1.4 Measuring Azimuth

Measurement range: 0–360°

Measurement error: ±1.5°

6.1.5 Measuring Pitch and Roll Angles

Measurement range: -90° to 90°

Measurement error: ±0.5° for the range of -60° to +60°.

Measurement error at 60°–90°: ±1.0°

-90° to -60° measurement error: ±1.0°

6.1.6 Laser type: 650nm (Red visible light)

6.1.7 Projection distance:

Longitudinal laser spot: 0–50 m; at 50 m, the diameter of the infrared spot shall not exceed 25 mm (in the short-axis direction). Clearly visible 。

Horizontal laser scribing: 0–20 m; at 20 m, the infrared beam width shall not exceed 10 mm. Clearly visible 。

6.2 Basic Functions

6.2.1 Can display azimuth, pitch angle, roll angle, temperature, atmospheric pressure, altitude, and relative height in real time;

6.2.2 Angle display resolution: 0.1 °;

6.2.3 Display size: 1.8 inch;

6.2.4 Auto-shutdown function: 30s ~ 999s Adjustable;

6.2.5 Can project a red laser dot or laser line;

VII. Operating Instructions

7.1 Key:

7.1.1 Up key / Laser. In < Azimuth > Page; tap this button to switch. < Point laser >/< Line laser >/< Turn off the laser > Three states; input is also possible in the input state. 0~9 of the data.

7.1.2 Press the key / Page through the data. Tap this key to cycle through the live data; it can also be used to move the input cursor in entry mode.

7.1.3 Confirm / Maintain. < Confirm > Function; in < Azimuth > Page; tap this button to switch. < Maintain >/< Refresh > Current data.

7.1.4 Power on, power off / Return. Press and hold this key for about 3 Press and hold for a few seconds to power the device on or off; you can also tap this button to return to the previous menu level.

7.2 , Measurement:

7.2.1 After powering on, the system automatically enters the real-time data display page. Press Press the key to turn the page, press Turn on the laser, press Can retain data, according to You can return to the main menu.

7.2.2 Azimuth measurement: Place the instrument horizontally (a rough level is sufficient), use the collimator or a laser pointer for aiming, rotate the instrument in the horizontal plane to align it with the target azimuth, and then read the displayed value. The collimator is suitable for long-distance measurements in bright lighting conditions, while the laser pointer is better suited for low-light environments.

7.2.3 Roll angle measurement: Using the instrument’s base as the reference plane, pivot the instrument about its longitudinal central axis in the left–right direction to measure the angle between the instrument and the horizontal plane.

7.2.4 Pitch angle measurement: Using the instrument’s base as the reference plane, pivot the instrument about its transverse central axis to measure the angle between the instrument and the horizontal plane.

7.2.5  Barometric pressure measurement   ： According to Press the key to enter the barometric pressure display page, where the current ambient pressure, temperature, and altitude are shown in real time.

7.2.6  Relative height   ： According to Press the key to enter the relative height display page. On the current page, press Press the key to set the instrument’s current height as the reference height; as you move the instrument upward or downward, the display will show the elevation difference relative to the reference.

7.3 Settings:

7.3.1 Magnetic Declination Setting: Used to set the deviation angle between geographic north and magnetic north. Return to the main menu, then navigate to the “Parameter Settings” page and subsequently to the “Magnetic Declination Setting” page. Key change “ Plus minus "number and " 0~9 “Number,” The key changes the cursor position. Press the key to confirm the modification. Press Cancel to return.

7.3.2 Standby time: Used to set the instrument’s automatic shutdown delay time. Return to the main menu, then navigate to “Parameter Settings” and select the “Standby Duration” page. Key change “ 0~9 “Number,” The key changes the cursor position. Press the key to confirm the modification. Press the key to cancel and return. The minimum value that can be set is 15s , the maximum value is 360s . Note: When set to 0s During this time, the instrument remained in operation.

7.3.3 Inclination zero point : Used to set the zero point for the tilt angle. Return to the main menu, then navigate to “Parameter Settings” and subsequently to the “Tilt Zero Calibration” page. Place the instrument’s base on a level surface and press Press the key and wait for the setup to complete.

7.3.4 Factory Calibration: This function is used for factory-default parameter calibration and requires a password to operate; it is not accessible to users.

VIII. Maintenance and Servicing

8.1 Perform regular maintenance and keep equipment clean.

8.2 If the instrument is stored for an extended period, it should be charged regularly, every 3 Perform a charge-discharge cycle once a month: the red light indicates charging, while the green light indicates either standby or that the battery is fully charged.

8.3 This instrument is equipped with a timer shutdown function; however, it can be set to remain operational continuously for special applications. Therefore, be sure to confirm that the instrument has been turned off after each use to conserve battery power.

8.4 Charging underground is strictly prohibited.

8.5 During maintenance, the model, specifications, and parameters of product components shall not be altered at will.

8.6 If the instrument malfunctions, it must not be repaired by non-professionals.

8.7 Strong magnetic interference in the working environment or the presence of an unstable magnetic field can lead to significant measurement errors.

8.8 Only the batteries specified in the instruction manual may be used.

Harbin Optical Instruments Factory Co., Ltd.

HARBIN OPTICAL INSTRUMENT FACTORY LTD.

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

Postal Code: 150010

Telephone: 400-030-0319 0451-84286338

Website: www.hrboptical.com           

E-mail： hopt@hopt.cn