UNI-T UT373 Non-Contact Laser Tachometer

UNI-T UT373 Non-Contact Laser Tachometer in Sri Lanka

Handheld Optical RPM Meter with Reflective Tape

The UNI-T UT373 Non-Contact Laser Tachometer measures rotational speed without touching the moving part. Aim its laser at a reflective tape marker on a shaft, pulley, fan or motor, and the meter displays RPM from a safe distance. It is a practical choice for automotive workshops, maintenance teams and industrial users in Sri Lanka who need quick speed checks without stopping equipment.

Browse our full range of tachometers and RPM meters in Sri Lanka for contact, non-contact and dual-mode options.

The UT373 measures from 10 to 99,999 RPM and can also display revolution count. Its compact body, data-hold function and MAX/MIN readings make it convenient for routine motor, fan and small-engine diagnostics. For best results, apply reflective tape to the rotating surface and keep the meter within its 50–200 mm target distance.

Technical Specifications

Measurement Type

Non-contact optical laser tachometer

RPM Range

10.0–9,999.9 RPM; 10,000–99,999 RPM

Resolution

0.1 RPM (10.0–9,999.9 RPM); 1 RPM (10,000–99,999 RPM)

Accuracy

±(0.04% + 2 digits)

Target Distance

50–200 mm

Measuring Angle

±30° from perpendicular

Refresh Rate

1–7 seconds; 1 second above 120 RPM

Display

5-digit LCD with backlight; RPM/count and time dual display

Measurement Functions

RPM, revolution count, MAX/MIN, data hold

Power Supply

3 × 1.5 V AAA (R03) batteries

Size and Weight

Compact handheld design; approximately 85 g excluding batteries

Key Features

Contactless Measurement

Measures rotating surfaces using a laser and reflective tape, without physical contact

Wide RPM Range

Suitable for slow machinery through high-speed motors up to 99,999 RPM

RPM and Revolution Count

Displays rotational speed or total revolutions, depending on the application

MAX/MIN and Data Hold

Review highest and lowest readings or freeze the current value for recording

Backlit LCD

Improves visibility in workshops and low-light inspection areas

Auto Power-Off

Helps conserve battery life during intermittent use

Applications

• RPM checks on electric motors, fans and blowers
• Small-engine speed verification in automotive and generator service
• Pulley, shaft and rotating-disc speed measurement
• HVAC fan commissioning and maintenance checks
• General machinery diagnostics where reflective tape can be applied

Important Buying Guidance

This is a non-contact-only tachometer. It requires a reflective tape marker on the rotating target and is best used within 50–200 mm of the surface. If you need direct shaft contact, surface-speed measurement, or access to recessed rotating parts, choose a dual-mode model such as the UNI-T UT372D Contact & Non-Contact Tachometer.

Package Includes

• 1 × UNI-T UT373 Non-Contact Laser Tachometer
• Reflective tape
• 3 × 1.5 V AAA batteries
• English user manual

Downloads

📄 Download UNI-T UT373 Data Sheet
📄 Download UNI-T UT373 User Manual