UNI-T UT309E Professional Infrared Thermometers
- Wide Temperature Range: -35°C to 850°C
- Adjustable Emissivity: 0.1 to 1.0
- High Optical Ratio: 20:1 D:S
- Dual Lasers for Precise Targeting
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Description
Pioneering Technology for Reliable Temperature Measurement Worldwide
The UNI-T UT309E Professional Infrared Thermometer stands at the forefront of surface temperature measurement technology, providing unmatched precision and reliability for professionals across a wide range of industries. Designed as part of UNI-T’s esteemed UT309 Series, this advanced handheld thermometer leverages cutting-edge infrared technology to analyze the energy radiated from a target surface, instantly translating it into precise temperature readings. Whether assessing the conditions of electrical equipment, checking HVAC system efficiency, or ensuring machinery safety on the manufacturing floor, the UT309E is engineered to meet the highest expectations. Combining a robust, ergonomic design with an intuitive user interface and highly sensitive dual-laser targeting, this device ensures both accuracy and safety in every measurement scenario, even in the most demanding environments.
Exceptional Durability with IP65 and Drop Certification
Ruggedness is a defining feature of the UT309E. UNI-T equips this thermometer with a sturdy exterior rated at IP65 for dust and water resistance, making it highly suitable for industrial, outdoor, or challenging workshop conditions. The UT309E easily withstands the rigors of everyday technical work, thanks also to its 3-meter drop-proof construction—a testament to its durability and UNI-T’s unwavering commitment to product longevity. These resilient attributes make the UT309E a trusted companion for technicians in both routine maintenance and emergency interventions, ensuring reliable operation regardless of accidental knocks, drops, or exposure to the elements. This durability minimizes downtime and enhances productivity, allowing users to focus on diagnosis and safety rather than equipment failure.
Advanced Features Empowering Technical Professionals Daily
The UNI-T UT309E is not just about robust construction—it comes packed with sophisticated features that empower engineers and technicians to operate with confidence and efficiency. Its large, bright LED display with adjustable backlight ensures optimal visibility even in poorly lit environments, while a fast 250ms response time guarantees accurate spot readings in real time. The device offers a comprehensive suite of measurement functions, including MAX, MIN, AVG, and DIFF modes, to capture and analyze essential temperature data over time. Equipped with high/low temperature alarms with LED visual indication, it instantly alerts users to deviations, enabling rapid on-site decisions and preventative maintenance. The lock measurement function, display hold, and auto power-off features further enhance usability and conserve battery life during extended fieldwork.
Industry-Leading Precision and Flexible Measurement Options
Precision is at the heart of the UT309E infrared thermometer. It boasts a remarkable temperature measurement range from -35°C up to an impressive 850°C (-31°F to 1562°F), accommodating everything from cold-chain logistics to high-temperature industrial processes. With its adjustable emissivity range (0.1 to 1.0), users can fine-tune the instrument for accurate readings across a wide variety of materials, whether shiny metals or dull surfaces. The 20:1 distance-to-spot (D:S) optical ratio—much higher than typical consumer-grade models—allows for safer, more precise measurement from longer distances, ideal for hazardous or hard-to-reach systems. Dual targeting lasers further refine accuracy by clearly defining the measurement area, avoiding errors and remeasurements.
Versatile Applications Across Diverse Industrial Sectors
The UNI-T UT309E Professional Infrared Thermometer is indispensable for professionals operating in a diverse array of technical fields. In electrical distribution inspections, its non-contact temperature sensing enables rapid detection of overheated connections, loaded transformers, and circuit breakers, mitigating fire risk and ensuring infrastructure reliability. For HVAC service technicians, the UT309E streamlines air conditioning maintenance and ductwork analysis by accurately identifying airflow irregularities and thermal leaks. Transport and fleet maintenance specialists use the device for checking braking systems, tire temperatures, and engine components, preventing malfunctions and improving safety. Instrument repair engineers and production teams depend on the UT309E’s high-temperature range and precise targeting to monitor process control systems, calibrate sensitive devices, and enhance quality assurance—all without physical contact or contamination.
Effortless Operation and Convenient Accessories Included
Simplicity is a key aspect of the UT309E’s appeal; its user-friendly design ensures that professionals of all experience levels can harness its full capabilities with ease. The ergonomic handle comfortably fits most hands while remaining lightweight at just 292g, reducing user fatigue during lengthy inspections. Operated via a standard 9V battery, it offers excellent autonomy in the field. The clear control interface enables fast °C/°F switching, laser activation, display holds, and quick access to data modes with minimal training required. Standard accessories—including a PC software CD for data management, a rugged carrying bag, and comprehensive multilingual manuals—round out the package. For added flexibility, a tripod mounting hole is provided, supporting stable hands-free operation during continuous monitoring or while documenting critical temperature trends.
Global Excellence: Authenticity and Delivery by tpt24
When sourcing professional measurement equipment, trust and reliability are paramount. The UNI-T UT309E Professional Infrared Thermometer is available from tpt24, the world’s leading global online retailer for UNI-T products and other advanced technical instruments. tpt24 stands out not only for its vast inventory and competitive prices but, more importantly, for its guarantee of authenticity and product quality. Purchasing from tpt24 ensures that every UT309E thermometer is 100% original, covered by international quality assurance, and shipped securely to any country worldwide—no matter where your work takes you. Customers benefit from responsive support, up-to-date resources, and a seamless shopping experience, knowing their investment is fully protected by the market leader in precision tools.
Specifications
| Specifications | UT309A | UT309C | UT309E |
| Temperature range | -35°C~450°C | -35℃~650℃ | -35℃~850℃ |
| -31°F~842°F | -31℉~1202℉ | -31℉~1562℉ | |
| Accuracy | ≥0°C: ±1.8°C or ±1.8% | ||
| <0°C: ±(1.8°C+0.1°C/°C) | |||
| ≥32°F: ±3.6°F or ±1.8% | |||
| <32°F: ±(3.6°F+0.1°F/°F) | |||
| Resolution | 0.1°C/0.1°F | ||
| D:S ratio | 10:1 | 12:1 | 20:1 |
| Response time | 250ms (95% of reading) | ||
| Emissivity | 0.95 | 0.1~1 adjustable | 0.1~1 adjustable |
| Number of lasers | Single laser | Dual lasers | Dual lasers |
| Laser type | Class 2 | ||
| Laser power | <1mW | ||
| Laser wavelength | 630nm~670nm | ||
| Spectral response | 8μm~14μm | ||
| Features | |||
| °C/°F selection/Laser switch | √ | ||
| Display hold(s) | 8 | ||
| Data hold/Auto power off | √ | ||
| Low battery indication | √ | ||
| Lock measurement | √ | ||
| MAX/MIN/AVG/DIFF mode | √ | ||
| High alarm (red LED) | √ | ||
| Low alarm (blue LED) | √ | ||
| LCD backlight | √ | ||
| Tripod mounting hole | √ | ||
| General Characterisitics | |||
| Power | 9V battery (6F22) | ||
| Display | 32mm x 29mm | ||
| Product color | Red and grey | ||
| Product net weight | 292g | ||
| Product size | 189mm x 118mm x 55mm | ||
| Standard accessories | PC software CD, carrying bag | ||
| Standard individual packing | Gift box, blister, English manual (UT309A/C only: German, French, Spanish optional) | ||
| Standard quantity per carton | 10pcs | ||
| Standard carton measurement | 430mm x 335mm x 330mm | ||
| Standard carton gross weight | 6.5kg | ||









