Sale!

Front view of the UNI-T UT373 mini digital non-contact laser tachometer displaying 0.0 RPM on its LCD screen.

A person safely using the UNI-T UT373 laser tachometer to measure the RPM of a spinning industrial cutting machine from a distance.

UNI-T UT373 tachometer screen with LCD backlight turned on, showing clear reading capabilities in dark or harsh industrial environments.

Detailed graphic showing the UNI-T UT373 tachometer's laser target distance of 50 to 200mm and its compartment for 3 AAA batteries.

Hand holding the compact and ergonomic UNI-T UT373 mini tachometer, demonstrating its portable pocket-sized design.

Graphic demonstrating the UNI-T UT373 tachometer surviving a 1-meter drop test against a rocky background, highlighting its rugged and damage-resistant shell.

Features & Details

⚡ 10-99,999 RPM RANGE	Measures rotational speed non-contact from 10 up to 99,999 RPM with 0.1 RPM high resolution.
🎯 LASER SENSING TARGET	Projects a visible laser target point onto reflective tape at distances from 50mm to 200mm.
📊 MAX/MIN & DATA HOLD	Captures peak maximum and minimum rotational speeds with one-touch data hold on LCD screen.
🔋 PORTABLE ERGONOMICS	Compact palm-sized body operates on 3× AAA batteries with auto power-off after 15 minutes.

About this item

Product specification

Technical Specifications

Feature	Description
Measurement Type	Optical / Non-Contact Laser
RPM Range	10.0 ～ 99,999 RPM
Counting Range	0 ～ 99,999 counts
Resolution	0.1 RPM (10~9999.9) / 1 RPM (≥10000)
Target Distance	50mm ～ 200mm (approx. 2 to 8 inches)
Durability Rating	1-Meter Drop Resistant
Screen Type	Digital LCD with Backlight
Smart Functions	Data Hold, Auto Power Off (15 mins)
Power Supply	3 x 1.5V AAA Batteries (Not Included)
What’s in the Box	• 1 x UNI-T UT373 Compact Laser Tachometer • 1 x Roll of Reflective Tape (Essential for optical measurement) • 1 x Comprehensive User Manual

Note: Please ensure the target surface is clean before applying the reflective tape for the most accurate laser reading.

Environmental Auditing & Facility Diagnostics

UT373 Mini Non-Contact Laser Tachometer, Optical RPM Speed Gauge for Motor & Machinery Professional Series

Ensuring dependable accuracy during daily operations requires professional equipment engineered to withstand demanding laboratory and industrial environments. The UNI-T UT373 Mini Non-Contact Laser Tachometer, Optical RPM Speed Gauge for Motor & Machinery (10-99,999 RPM) provides verified stability, user-friendly operation, and certified safety compliance across standard maintenance protocols. Discover our complete line of diagnostic and testing instruments in the Environmental Tester catalog.

Real-Time Peak & Average Hold

Instantly locks minimum, maximum, and average values over time, simplifying noise, lighting, and air velocity surveys.

Fast Sampling Response

High-speed internal ADC samples fluctuations multiple times per second, ensuring transient surges and draft changes are captured.

💡

Environmental Insight: Calibration & Spectral Standards

Accurate acoustic and optical meters incorporate specialized weighting curves (such as A-weighting for human ears and photopic filters for human vision) to mirror standard compliance metrics.

Ordering & Model Verification

Please check measuring range and probe accessories before adding this environmental meter to your cart in the right-side box.

Related technical collections:
Environmental Tester |
Electrical Measuring Instruments

high contrast backlit lcd display on non contact laser tachometer

optical targeting red laser tracking module alignment

hardware parts diagram and retail package of laser tachometer

Use Cases

High Speed Rotation Industrial Maintenance Non-Contact Testing Pocket Size Portable

FAQs

Q1: How does the non-contact laser measurement work?

A: This tachometer utilizes a high-precision laser beam to detect rotations. You simply apply a small piece of reflective tape (included) to the rotating object. The laser reflects off this tape back to the meter’s sensor, which accurately calculates the RPM based on the frequency of the returning light pulses.

Q2: What is the optimal measuring distance for this tachometer?

A: For the most accurate and stable readings, you should maintain a distance of 50mm to 200mm between the laser sensor and the target object. Operating within this range ensures the laser beam hits the reflective tape precisely without interference.

Q3: Is reflective tape absolutely necessary for measurement?

A: Yes, for non-contact laser measurement, the reflective tape is necessary to provide a high-contrast target for the laser beam. Without the tape, the sensor may fail to detect the rotation, especially on dark or non-reflective mechanical surfaces.

Q4: Can this device measure low speeds as well as high speeds?

A: Absolutely. The UNI-T UT373 features a wide measurement range from 10 RPM to 99,999 RPM. This makes it versatile enough for slow-moving conveyor systems as well as high-speed industrial motors and electric fans.

Q5: Is it safe to use this device on high-voltage electrical equipment?

A: Yes, it is very safe. Because this is a non-contact instrument, you do not need to touch any moving or electrified parts. It allows maintenance technicians to perform safety audits on motors and generators from a distance, significantly reducing the risk of accidental contact.

Q6: Does it track and save measurement data?

A: Yes, the UT373 is equipped with MAX/MIN tracking and a Data Hold function. You can easily record the peak and lowest rotational speeds during an equipment test cycle, and use the Data Hold button to freeze the current reading on the LCD screen for easy recording.

UNI-T UT373 Mini Non-Contact Laser Tachometer, Optical RPM Speed Gauge for Motor & Machinery (10-99,999 RPM)

Name: Non-Contact Laser Tachometer | UNI-T UT373 Digital RPM Meter
Brand: UNI-T
SKU: UT373
Price: 27.99 USD
Availability: InStock

Original price was: $35.99.Current price is: $27.99.

Extra 5% Off with code: welcome5

6–12 Month Warranty

Repair & Refund support available for most products.

Free Worldwide Shipping

Ships within 3 business days.

Taxes & Duties

Buyer responsible for local import fees.

24/7 After-Sales Support

Technical assistance & video guidance within 24h.