UNI-T UT301D+ Infrared Thermometer – High-Precision Non-Contact Temperature Measurement

The UNI-T UT301D+ Infrared Thermometer is a professional-grade non-contact temperature measurement tool designed for fast, accurate, and safe thermal readings across a wide range of applications. Built by UNI-T, a trusted global manufacturer of electronic test and measurement instruments, the UT301D+ delivers reliable performance for industrial maintenance, electrical inspection, HVAC diagnostics, automotive servicing, and general technical use.

By using infrared (IR) sensing technology, this thermometer allows users to measure surface temperatures instantly without physical contact, making it ideal for high-temperature, hazardous, or hard-to-reach surfaces.

Advanced Infrared Measurement Technology

The UNI-T UT301D+ operates by detecting infrared energy emitted from an object’s surface and converting it into a precise temperature reading. This non-contact method improves safety and efficiency while eliminating the risk of contamination or damage to sensitive components.

Infrared thermometers are widely used in professional environments due to their speed and accuracy. For a technical explanation of how infrared thermometers work, refer to this educational resource:
https://en.wikipedia.org/wiki/Infrared_thermometer

Wide Temperature Measurement Range

The UT301D+ is designed to handle a broad temperature range, making it suitable for both low-temperature and high-temperature applications. It provides consistent and stable readings across industrial and technical environments, including electrical panels, motors, bearings, pipes, and HVAC systems.

The fast response time ensures instant readings, allowing technicians to quickly identify overheating components or abnormal temperature patterns during inspections.

Adjustable Emissivity for Higher Accuracy

One of the standout features of the UNI-T UT301D+ is its adjustable emissivity, which allows users to fine-tune the measurement based on the surface material being tested. Since different materials emit infrared radiation differently, adjustable emissivity significantly improves measurement accuracy across metals, plastics, ceramics, and painted surfaces.

For more information on emissivity and its impact on temperature measurement, you can explore this resource from Fluke:
https://www.fluke.com/en/learn/blog/temperature/what-is-emissivity

High Distance-to-Spot Ratio

The UT301D+ features a high distance-to-spot (D:S) ratio, allowing accurate temperature measurements from a safe distance. This is especially important when working with live electrical components, moving machinery, or extremely hot surfaces.

A higher D:S ratio means better precision when measuring smaller targets from farther away, making the UT301D+ suitable for professional inspection tasks.

Clear Backlit Display & User-Friendly Design

Equipped with a large backlit LCD display, the UNI-T UT301D+ ensures clear visibility even in low-light environments. The ergonomic handheld design allows comfortable one-handed operation, while intuitive controls make it easy to switch settings and measurement modes quickly.

Additional features such as MAX/MIN temperature hold, data hold, and auto power-off enhance usability and efficiency during extended use.

Durable Construction for Professional Use

The UNI-T UT301D+ is built for durability and long-term reliability. Its rugged housing is designed to withstand the demands of industrial and field environments, making it a dependable tool for technicians and engineers who require consistent performance day after day.

UNI-T instruments are widely used in industrial and technical fields worldwide. You can learn more about UNI-T’s measurement solutions here:
https://www.uni-trend.com/

Typical Applications

The UNI-T UT301D+ Infrared Thermometer is ideal for:

• Electrical panel and circuit inspection

• Preventive and predictive maintenance

• HVAC system diagnostics

• Automotive engine and exhaust testing

• Industrial equipment monitoring

• Mechanical and bearing temperature checks

Its versatility makes it suitable for both professional technicians and advanced DIY users.

Why Choose the UNI-T UT301D+ Infrared Thermometer?

• Fast and accurate non-contact temperature measurement

• Adjustable emissivity for improved accuracy

• Wide temperature measurement range

• High distance-to-spot ratio

• Clear backlit LCD display

• Durable, professional-grade design

The UNI-T UT301D+ Infrared Thermometer is a reliable and efficient tool for anyone who needs precise temperature measurement without direct contact. Whether used in industrial maintenance, electrical inspection, or technical diagnostics, it delivers accuracy, safety, and performance you can trust.