UNI-T UT373 Non-Contact Laser Tachometer

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

Handheld Optical RPM Meter with Reflective Tape for Contactless Speed Measurement

The UNI-T UT373 Non-Contact Laser Tachometer delivers fast, accurate, and completely contactless rotational speed measurement using a focused laser beam and reflective tape. Designed for maintenance engineers, automotive technicians, and industrial professionals across Sri Lanka, this handheld optical tachometer lets you safely measure RPM on rotating shafts, pulleys, fans, and small engines without stopping the machine or touching any moving part.

Discover our complete selection of Tachometers & RPM Meters — contact, non-contact, laser, and digital types available in Sri Lanka!

With a wide measurement range of up to 99,999 RPM and a safe laser sensing distance, the UT373 is the ideal contactless tachometer for applications where physical contact is hazardous, impractical, or where reflective tape can be conveniently applied to the rotating target. The instrument stores last, maximum, and minimum readings for convenient comparison and diagnostics during field service.

Technical Specifications

Measurement Type: Non-contact optical laser tachometer

RPM Range: 10 ~ 99,999 RPM

Resolution: 0.1 RPM (10~999.9 RPM); 1 RPM (≥1000 RPM)

Accuracy: ±(0.05% + 1 digit)

Sensing Distance: 50mm ~ 500mm (recommended)

Sampling Time: 0.8s (≥60 RPM); 2s (< 60 RPM)

Display: 5-digit LCD

Memory: Last, MAX, MIN value storage

Laser Class: Class II laser (< 1mW)

Power Supply: 3 × 1.5V AAA batteries

Dimensions: Compact handheld form factor

Key Features

Contactless Laser Sensing: No physical contact with the rotating target — safe for high-speed and hazardous measurement environments

Wide RPM Range: Covers slow machinery and high-speed motors in a single instrument (10–99,999 RPM)

MAX / MIN / LAST Memory: Capture and review peak and minimum speed values for trending and diagnostics

Reflective Tape Included: Works with standard reflective tape strips applied to the rotating shaft or surface

Single-Hand Operation: Ergonomic pistol grip with trigger-style operation for comfortable one-handed field use

Auto Power-Off: Extends battery life during infrequent use cycles

Applications

Non-contact RPM measurement on electric motors, fans, and blowers

Optical tachometer testing for small engine speed verification

Pulley and belt drive speed ratio confirmation in industrial machinery

Propeller and shaft RPM measurement where contact is unsafe

HVAC fan speed checking and commissioning

Package Includes

1 × UNI-T UT373 Non-Contact Laser Tachometer

Reflective tape strips

3 × AAA batteries (installed)

Carrying case

English user manual

If your application also requires direct shaft contact measurement with wheel and cone adapters, consider the UNI-T UT372D Contact & Non-Contact Tachometer RPM Gauge for dual-mode contact and non-contact flexibility.

Downloads

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