UT139 series are CAT III 600V digital multimeters designed for electricians. Its NCV feature can effectively check electrical status through measuring EM field intensity. The new UT139E/S models include special features such as LoZ (ACV) for measuring'ghost' voltage. Its built-in 31-segment analog bar also gives electricians a better visual representation of measurement results. UT139S is built with black EBTN display and it is a perfect meter for working in dark environments.
The UNI-T UT139S delivers professional-grade functionality with enhanced measurement capabilities designed for electrical professionals. With its True-RMS accuracy, LoZ ghost voltage detection, and specialized functions like temperature measurement, this reliable multimeter provides electricians, maintenance technicians, and electronics hobbyists with comprehensive functionality for accurate electrical diagnostics in diverse environments. The UNI-T UT139S expands upon essential multimeter functions with specialized capabilities designed for comprehensive electrical system analysis. With excellent DC voltage accuracy of ±(0.5%+2), True RMS AC measurement with extended bandwidth (45-400Hz), and integrated temperature measurement (-40°C to 1000°C), the UT139S delivers the functionality needed for thorough equipment diagnostics and troubleshooting. The high-contrast EBTN black display provides clear visibility in varied lighting conditions, especially in dark environments, while the responsive 31-segment analog bar graph provides visual indication of changing values. This combination of digital precision and analog-style visualization makes the UT139S ideal for both precise measurement and dynamic system evaluation.
The UNI-T UT139S includes a dedicated LoZ (Low Impedance) voltage measurement function that allows electricians to quickly verify the presence of actual voltages by eliminating ghost voltage readings. This capability is essential when troubleshooting complex electrical systems, preventing false readings and ensuring accurate diagnostics. With an extended frequency response of 45-400Hz for both voltage and current measurements, the UT139S provides accurate readings on variable frequency drive systems, allowing technicians to properly evaluate modern electronic equipment. This expanded capability makes the UT139S particularly valuable in environments with electronic controls and variable speed drives.
- DC/AC voltage: 600V
- 10A Current Range: Comprehensive capability for load testing
- True-RMS Measurement: Accurate readings on modern electronic loads and distorted waveforms
- LoZ (Low Impedance) Function: Eliminates ghost voltage readings in high-capacitance systems
- Full Range Protection: Comprehensive safety features for both user and instrument
- EBTN Display: High-contrast black display for excellent visibility in dark environments
- 31-Segment Analog Bar: Visual indication of changing values and trends
- Temperature Measurement: Built-in capability for thermal diagnostics up to 1000°C
- High Resolution Display: 6000 count precision for detailed measurements
- LPF (Low Pass Filter): Removes high-frequency noise for cleaner measurements
- Non-Contact Voltage Detection: Quickly check electrical status through electromagnetic field detection
Applications
- Electrical Maintenance/ Inspection and Troubleshooting
- Variable Frequency Drives (VFD) and Motor Repair
- Voltage Detection
- HVAC and Industrial Maintenance
Each Unit Includes
- 1 - True-RMS Electricians Digital Multimeter (UT139S)
- 1 - Set of Test Leads
- 1 - Temperature Probe
- 2 - 1.5V Batteries (R6)
- 1 - User Manual
