4-Channel Thermometer– UNI-T UT325F

Multi-Channel Precision for Industrial Thermal Analysis

The UNI-T UT325F represents the analytical peak of UNI-T’s contact temperature range. In complex South African industrial systems—such as industrial furnaces, chemical reactors, and large-scale HVAC installations—single-point temperature checks are often insufficient. The UT325F’s dual-channel architecture allows for the simultaneous monitoring of two distinct points, providing the differential data ($T1-T2$) necessary to evaluate heat exchanger efficiency and thermal gradients with scientific accuracy.

Universal Thermocouple Compatibility and High-Speed Accuracy

The UT325F is designed to be the only contact thermometer a professional needs:

• 7-Type Thermocouple Support: Whether you are using standard Type K for general HVAC or specialized Type R/S for high-temperature smelting, the UT325F adapts instantly via its intelligent firmware, ensuring precise linearization for every probe type.

• Dual-Channel Monitoring ($T1,T2$): View two independent temperature sources simultaneously. The device automatically calculates the temperature difference, making it an essential tool for balancing HVAC split systems and monitoring intake/outflow efficiency.

• Extreme Resolution & Range: Offering a resolution as fine as 0.1∘C and a measuring range spanning from −200∘C to +1372∘C (depending on probe), the UT325F captures minute thermal drifts that lower-tier meters miss.

Wireless Connectivity and Advanced Data Logging

The “F” series integration of modern data management transforms the UT325F into a mobile workstation:

• Bluetooth 5.0 Integration: Sync with the UNI-T Smart Measure app to monitor live thermal trends from a safe distance—critical when working near high-voltage machinery or high-temperature furnaces.

• 20,000-Set Internal Memory: Log extensive data during long-duration thermal stability tests. The meter can record data autonomously, which can then be exported via USB or Bluetooth for professional graphing and analysis.

• Visual Alarm Thresholds: Program high and low alarm limits. The UT325F provides immediate visual and audible cues when temperatures breach safety parameters, ensuring critical processes remain within specification.

Industrial Ergonomics and Field Reliability

Housed in a ruggedized, impact-resistant chassis, the UT325F is built for the factory floor. The large, high-contrast backlit LCD ensures error-free data reading in dark electrical vaults or bright outdoor environments. With its intuitive tactile buttons, including MAX/MIN/AVG and Data Hold, the meter allows for rapid-fire diagnostics. Powered by high-capacity AA batteries or via the Type-C USB port, it ensures you are never without power during critical site audits.

Key Features & Technical Advantages:

• Dual-Channel Input: Simultaneous $T1$ and $T2$ monitoring with $T1-T2$ calculation.

• 7-Type Thermocouple Support: Compatible with K, J, T, E, R, S, and N probes.

• Bluetooth 5.0 & USB Connectivity: Seamless wireless data logging and PC export.

• 20,000-Set Data Storage: Extensive on-device memory for longitudinal studies.

• High-Resolution Backlit Display: Clear visibility for multi-parameter readings.

• MAX/MIN/AVG Tracking: Instant capture of thermal extremes and stability.

Professional Application Scenarios

• HVAC/R System Balancing: Measuring the temperature drop across evaporator coils and heat exchangers.

• Industrial Furnace & Kiln Auditing: Using Type R/S probes to monitor high-temperature refractory performance.

• Pharmaceutical Cold Chain: Verifying the thermal uniformity of large-scale medical refrigerators and incubators.

• Electronics Manufacturing: Monitoring heat sink efficiency and component temperatures during stress testing.

• Food Processing: Simultaneous auditing of oven temperatures and internal product core temperatures for HACCP compliance.

Maintenance and Best Practices

To maintain the professional accuracy and longevity of your UNI-T UT325F, follow these protocols:

• Probe Selection: Ensure the probe type selected in the meter settings matches the physical thermocouple connected; using a Type K probe on a Type J setting will result in significant errors.

• Contact Integrity: For surface measurements, use a thermal paste or ensure firm, perpendicular contact to prevent ambient air from cooling the probe tip.

• Bluetooth Range: Maintain a clear line of sight where possible when using the Smart Measure app to ensure stable data transmission during long-distance logging.

• Terminal Care: Keep the sub-miniature thermocouple ports clean and dry; oxidation in the terminals can lead to increased resistance and fluctuating temperature readings.