UNI-T LM320 Series Angle Meter User Manual

LIMITED WARRANTY AND LIABILITY

UNI-T guarantees the product is free from defects in material and workmanship for one year from the purchase date. This warranty does not cover damages caused by accident, negligence, misuse, modification, contamination, or improper handling. Dealers are not authorized to provide any other warranty on behalf of UNI-T. For warranty service, please contact an authorized service center or return the product with a problem description. This warranty is the sole compensation. UNI-T is not responsible for special, indirect, incidental, or consequential damages. Limitations of liability may not apply in all regions.

Product Structure

The Angle Meter features several key components:

• 1. Laser ON/OFF Button: (Only for LM320E, LM320F) Controls the laser emission.
• 2. -/+ Display Icon: Indicates measurement direction or status.
• 3. Angle Direction Icon: Shows the direction of the measured angle.
• 4. Absolute/Relative Value Switch: Toggles between absolute and relative measurement modes.
• 5. Unit Switch: Allows selection of units (e.g., degrees, percentage, mm/m, in/ft).
• 6. Angle Display: Shows the measured angle.
• 7. Absolute/Relative Value Display: Indicates whether the displayed value is absolute or relative.
• 8. Unit Switch/Sound ON/OFF: Switches units or toggles sound indication.
• 9. Battery Display: Shows the remaining battery level.
• 10. Mute Icon: Indicates if the sound is muted.
• 11. Data-Hold Display: Shows when data is locked.
• POWER/Data Lock Button: Powers the device on/off and locks/unlocks data.
• Laser Emission Hole: (Only for LM320E, LM320F) Where the laser beam is emitted from.
• Type-C Charging Port: For charging the device.

Operations

Power On/Off:

Long press the POWER button to turn the device on or off.

Laser ON/OFF:

• LM320E: Short press the Laser ON/OFF button to turn all lasers on. Subsequent short presses turn off the right-side laser, then the left-side laser, and finally all lasers.
• LM320F: Short press the Laser ON/OFF button to turn all lasers on. Subsequent short presses turn off the top laser, then the left-side laser, and finally the right-side laser, and then all lasers off.

Angle Measurement:

Place the device on an inclined plane. The displayed value represents the angle between the plane and the horizontal plane.

REF (Relative Value Mode):

Short press the REF button to set the current measurement as the reference (0 degrees). Short press again to exit this mode and return to absolute measurement.

Calibration Mode:

1. Place the device on an absolute horizontal surface.
2. Press the CAL button three times continuously. 'CAL0' will flash.
3. Short press the CAL button to confirm and enter auto-zero calibration.
4. Rotate the device 90 degrees. 'CAL1' will flash. Short press the CAL button to confirm.
5. Rotate the device another 90 degrees. 'CAL2' will flash. Short press the CAL button to confirm.
6. Rotate the device another 90 degrees. 'CAL3' will flash. Short press the CAL button to confirm.
7. The device will display 'PASS' upon successful calibration and return to normal use after powering on.

Data Lock:

Short press the Data Lock button to lock the current measured data. Short press again to unlock.

Unit Switch & Sound ON/OFF:

• LM320E/LM320F: Long press the Unit Switch/Sound ON/OFF button to cycle through units: degrees (default), mm/m, %, in/ft. In in/ft mode, the display may show '+' or '-' to indicate fractions of an inch. For example, '11.7/8' means 11 and 7/8 inches.
• LM320D: Short press the UNIT button to switch units.
• For LM320E/LM320F and LM320D, short press the button to toggle sound indication on/off.

Charging:

When the low battery icon (<0xF0><0x9F><0x94><0x8B>) appears, charge the device using the provided Type-C cable. The battery is fully charged when the icon stops flashing and disappears.

Technical Parameters

Materials: Al-alloy frame + ABS

Power Supply: 3.7V 1000mAh Lithium battery

Working Temperature: 0°C ~ +50°C

Laser Class: Class 2

Laser Wavelength: 630-670nm, <1mW

Laser Life: Not specified

Battery Life: LM320D: 14h, LM320E: 8h, LM320F: 6h

Size: 83.5*70*35.5mm

Package Contents: Angle Meter*1, Type-C Cable*1, Gift Box*1, User Manual*1

Cautions:

• Do not use organic solvents to clean the precision equipment. Keep away from water and corrosives.
• Avoid damaging the device surface; use a soft cloth to wipe dust for accuracy.
• For power saving, the device automatically powers off after 5 minutes of inactivity.

Laser Safety Information

LASER RADIATION
DO NOT STARE INTO BEAM
CLASS 2 CONSUMER LASER PRODUCT
Compliance with IEC/EN 60825-1, EN 50689.

Product Labels

LM320E:

• Name: Angle Meter
• Model: LM320E
• Magnetic Base: Two-Sided
• Resolution: 0.05°
• Measurement Range: 4*90°
• Accuracy: ±0.2°
• Battery: 3.7V 1000mAh
• Laser Lines: 2
• Maximum Output Power: 1mW
• Wavelength: 630nm~670nm
• Certifications: IEC 60825-1:2014, EN 60825-1:2014/A11:2021, EN 50689:2021
• Classification: Consumer Laser Product

LM320F:

• Name: Angle Meter
• Model: LM320F
• Magnetic Base: Four-Sided
• Resolution: 0.05°
• Measurement Range: 4*90°
• Accuracy: ±0.2°
• Battery: 3.7V 1000mAh
• Laser Lines: 3
• Maximum Output Power: 1mW
• Wavelength: 630nm~670nm
• Certifications: IEC 60825-1:2014, EN 60825-1:2014/A11:2021, EN 50689:2021
• Classification: Consumer Laser Product

Notes

The manual is subject to change without prior notice. Due to different production batches, product materials and details may vary slightly from the graphic information. Please refer to the actual product received. Experimental data provided is from UNI-T's internal laboratory and should not be used as a reference for customer orders. For any questions, please contact customer service.