UT309C Professional Infrared Thermometers

UT309C Professional Infrared Thermometer

The UT309C Professional Infrared Thermometer is a high-performance non-contact temperature measurement device designed for engineers, electricians, HVAC technicians, and industrial maintenance professionals. This infrared thermometer allows users to measure surface temperatures instantly without touching the target. As a result, technicians can safely inspect electrical panels, motors, heating systems, and industrial machinery from a safe distance.

Moreover, the UT309C Professional Infrared Thermometer uses advanced infrared sensing technology to detect the thermal radiation emitted from the target surface. The device converts this radiation into an accurate digital temperature reading displayed on the screen. Therefore, technicians can quickly identify overheating components and perform temperature diagnostics during equipment maintenance.

In addition, the thermometer provides a wide temperature measurement range from -35°C to 650°C, which makes it suitable for many industrial and electrical inspection tasks. Because of this wide range, technicians can monitor temperatures in electrical equipment, mechanical systems, HVAC installations, and industrial processes.

Furthermore, the UT309C Professional Infrared Thermometer features a 12:1 distance-to-spot ratio, allowing accurate temperature measurement from a practical working distance. This optical resolution enables technicians to measure targets safely without getting too close to hot surfaces.

Another important advantage of this device is its adjustable emissivity (0.10 – 1.0). This feature allows users to adjust the measurement according to the material being tested such as metal, plastic, painted surfaces, or insulation. Consequently, the thermometer provides more reliable readings across different industrial environments.

The device also includes useful professional functions such as dual laser targeting, MAX/MIN/AVG/DIF measurement modes, high/low temperature alarm indicators, and a backlit LCD display. These functions help technicians analyze temperature variations and identify abnormal heat conditions quickly during inspections.

Because of its durable construction and high-precision measurement capabilities, the UT309C Professional Infrared Thermometer is widely used in electrical maintenance, HVAC inspection, industrial diagnostics, automotive repair, and equipment monitoring.

Key Features

• Non-Contact Temperature Measurement
  Measures surface temperature safely without touching the object.

• Wide Temperature Measurement Range
  Measures temperatures from -35°C to 650°C.

• 12:1 Distance-to-Spot Ratio
  Allows accurate measurement from a safe working distance.

• Dual Laser Targeting System
  Improves aiming accuracy during measurement.

• Adjustable Emissivity (0.10 – 1.0)
  Provides accurate readings for different materials.

• MAX / MIN / AVG / DIF Measurement Modes
  Allows monitoring of temperature changes.

• High/Low Temperature Alarm Indicators
  Alerts users when temperatures exceed preset limits.

• Backlit LCD Display
  Ensures clear readings in dark environments.

Applications

The UT309C Professional Infrared Thermometer is commonly used in many temperature monitoring tasks, including:

• Electrical panel and transformer inspection

• HVAC system diagnostics and maintenance

• Motor and bearing temperature monitoring

• Industrial equipment inspection

• Automotive diagnostics and repair

• Building maintenance and energy auditing

Technical Specifications (Datasheet)

• Model: UNI-T UT309C

• Product Type: Professional Infrared Thermometer

• Temperature Range: -35°C to 650°C

• Accuracy: ±1.8°C or ±1.8%

• Resolution: 0.1°C / 0.1°F

• Distance-to-Spot Ratio: 12:1

• Response Time: ≈250 ms

• Emissivity: Adjustable (0.10 – 1.0)

• Laser Type: Dual Laser, Class II (<1 mW)

• Spectral Response: 8µm – 14µm

• Display: Backlit LCD

• Power Supply: 9V battery