UNI-T UT373 Mini Digital Tachometer - Non-Contact Laser RPM Meter

Specifications

• Measurement Type: Non-contact Infrared Laser

• RPM Range: 10 to 99,999 RPM

• Resolution: 0.1 RPM (below 1000 RPM); 1 RPM (above 1000 RPM)

• Targeting: Integrated Laser pointer for precision alignment

• Display: 99,999-count LCD with high-contrast backlight

• Modes: RPM measurement and Count mode

• Data Functions: MAX / MIN / AVG tracking and Data Hold

Key Applications and Projects

• Motor Maintenance: Verifying the actual speed of electric motors against their manufacturer specifications.

• HVAC Systems: Checking the rotational speed of fan blades and belt-driven pulleys to ensure optimal airflow and prevent slippage.

• Production Line Monitoring: Counting the passage of items on a conveyor or measuring the speed of rotating shafts in manufacturing gear.

Unlock New Capabilities (Project Evolution)

• Efficiency Upgrade: Transition from mechanical contact tachometers to this non-contact laser model to measure dangerous high-speed machinery safely without needing to stop the equipment.

• Analytical Upgrade: Use the Count mode to track production cycles or shaft rotations over a specific time period for efficiency reporting.

Downloads:

• UT373-DataSheet
• UT373 -User Manual

Package Includes:

• 1 x UNI-T UT373 Mini Digital Tachometer

• 1 x Reflective Tape Strip

• 1 x Operating Manual

FREQUENTLY ASKED QUESTIONS (FAQ)

1. Do I need to touch the moving part to measure it? No, the UT373 uses a laser for non-contact measurement, allowing you to stay a safe distance from rotating parts.

2. How do I get an accurate reading? Apply a small piece of the included reflective tape to the rotating object and point the laser at it during operation.

3. What is the benefit of the backlit display? It allows for clear reading of RPM data in dark or poorly lit industrial environments.

4. Can it measure the average speed? Yes, it features a mode to display the average RPM recorded during the test session.

5. What does "Data Hold" mean? This feature freezes the current measurement on the screen for easy recording after you pull the device away.

6. Can it count objects? Yes, the device has a "Count" mode for tallying rotations or passing items.

7. What batteries does it require? It typically uses 3x standard 1.5V AAA batteries.

8. Is it safe for high-speed engines? Yes, it can measure speeds up to 99,999 RPM, making it suitable for almost any industrial or automotive engine.

9. Does it have a laser pointer? Yes, it includes a laser indicator to help you align the sensor with the reflective tape.

10. Does it have an auto-off feature? Yes, it automatically powers down after a period of inactivity to preserve battery life.

11. What is the "MAX/MIN" function? It identifies and displays the highest and lowest RPM values captured during the measurement period.

12. Is the housing durable? Yes, it features the signature UNI-T ruggedized black and red housing designed for field use.

13. How fast is the response time? It provides a nearly instantaneous reading, updating the display several times per second.

14. What is the measurement distance? It is typically accurate from a distance of 50mm to 200mm.

15. Does the laser stay on? You can toggle the laser targeting on or off using the dedicated button on the front panel.

16. Can I use it on shiny metal? For best results, always use a piece of reflective tape on shiny surfaces to prevent false readings.

17. What happens if the battery is low? A low-battery indicator icon will appear on the LCD screen.

18. Is it CE certified? Yes, it complies with European safety and quality standards.

19. What color is the display digits? The high-contrast display features large, easy-to-read black digits on a white backlit background.

20. Is this suitable for home hobbyists? Yes; while professional-grade, its simple interface makes it excellent for checking RC engines, lathes, or DIY motor projects.