When choosing a suitable measuring instrument, it helps to understand the differences between the options. The main product, Non-contact tachometer Unit UT373, is a portable non-contact tachometer designed for measuring the rotational speed of rotating parts. It is compared with similar tachometers such as Uni-T UT372 Non-Contact Tachometer, Unit UT371 Digital Contactless Tachometer 10-99999 RPM, and Unit UT372D 2-in-1 Digital Tachometer and Contactless Speedometer, as well as with a different type of device, the non-contact infrared thermometer Infrared Thermometer Unit UT320T. While the tachometers focus on diagnosing shafts and motors, the UT320T thermometer is designed exclusively for surface temperature measurement.
⚙️ The table below compares device types, intended use, and measurement ranges to clarify practical differences.
| Parameter | Non-contact tachometer Unit UT373 | Uni-T UT372 | Unit UT371 | Unit UT372D | Infrared Thermometer Unit UT320T | Practical conclusion |
|---|
| Device type | Non-contact tachometer | Non-contact tachometer | Digital non-contact tachometer | 2-in-1 digital tachometer | Infrared thermometer | Devices are split between rotational tachometers and temperature thermometers. |
| Intended use | Measuring rotational speed of shafts and motors | Industrial maintenance and diagnostics | Industrial RPM monitoring | Measuring rotation and speed | Non-contact temperature measurement | Models UT373, UT372, UT371, and UT372D serve mechanical tasks, while UT320T serves thermal ones. |
| Measurement range | 0.5–19999 RPM | Not specified | 10–99999 RPM | Not specified | -40 to 300°C | Model UT371 covers a broader upper RPM range. |
| Measurement method | Non-contact | Non-contact | Non-contact | Contact and non-contact | Non-contact IR | UT372D offers greater versatility by combining two methods. |
◎ The suitability table below evaluates which product matches specific use cases and buyer needs.
| Use case | Recommended product | Why |
|---|
| Quick check of motors and fans | Non-contact tachometer Unit UT373 | Provides simple and safe non-contact measurement within a standard range. |
| Professional machinery diagnostics | Uni-T UT372 Non-Contact Tachometer | Engineered for precise speed monitoring in industrial and automotive diagnostics. |
| High-RPM mechanism control | Unit UT371 Digital Contactless Tachometer 10-99999 RPM | Features an extended measurement range up to 99999 RPM. |
| Versatile mechanical measurements | Unit UT372D 2-in-1 Digital Tachometer and Contactless Speedometer | Combines contact and non-contact methods for various engineering tasks. |
| Surface and HVAC temperature checks | Infrared Thermometer Unit UT320T — Non-contact IR thermometer, measurement range -40 to 300°C, IP54 protection | Suited for checking heat levels as it measures temperature rather than rotational speed. |
The main product Non-contact tachometer Unit UT373 is well-suited for everyday maintenance tasks and routine checks of rotating parts. If you require a wider measurement range, contact measurement versatility, or temperature checking instead of speed, alternative models from the lineup will be more appropriate.
