UNI-T UT139B True RMS Digital Multimeter

Regarding accurate electrical measurements, the UNI-T UT139B True RMS Digital Multimeter is a reliable choice. This versatile multimeter is engineered to deliver precise readings and withstand the rigors of professional use. In this article, we will delve into the features and capabilities of the UT139B and understand why it is a top pick for electricians and technicians.

True RMS Measurement

The UT139B offers True RMS capabilities, ensuring accurate readings of both sinusoidal and non-sinusoidal waveforms. This feature is particularly crucial when working with complex electrical systems and various load types, making it a preferred choice for professionals.

NCV and LoZ Functions

The multimeter features Non-Contact Voltage (NCV) detection, allowing users to identify live circuits safely without making direct contact. Additionally, the UT139B has a special LoZ (Low Impedance) model, enabling the measurement of ‘ghost’ voltages and reducing interference from adjacent circuits.

Data Hold and MAX/MIN Modes

The UT139B comes equipped with Data Hold and MAX/MIN modes for added convenience during measurements. Data Hold freezes the displayed reading, and MAX/MIN modes record the maximum and minimum values during a session, streamlining data analysis.

Safety and Durability

The UT139B is designed with safety in mind, complying with CAT III 600V safety ratings. Its robust construction ensures durability, making it suitable for use in challenging work environments.

UNI-T UT139B True RMS Digital Multimeter Specificaions:

• DC voltage (V): 600V ±(0.5%+2)
• AC voltage (V): 600V ±(0.8%+3)
• DC current (A): 10A ±(0.7%+2)
• AC current (A): 10A ±(1%+3)
• Resistance (Ω): 40MΩ ±(0.8%+2)
• Capacitance (F): 99.99mF ±(4%+5)
• Frequency (Hz): 10Hz~10MHz ±(0.1%+4)
• Display count: 4000
• Auto range/Manual range
• True RMS
• Bandwidth (Hz): 45Hz~1kHz
• NCV/Continuity buzzer
• Duty cycle: 0.1%~99.9%
• Diode: Around 3V
• LPF/LoZ (ACV):
• Analog bar:
• Power: 1.5V battery (R6) x 2
• Display: 58mm x 36mm
• Product color: Red and grey
• Product net weight: 354g
• Product size: 170mm x 80mm x 48mm
• Standard accessories: Batteries, test leads;
• Standard individual packing: Gift box, English manual
• Standard quantity per carton: 20pcs
• Standard carton measurement: 450mm x 330mm x 340mm
• Standard carton gross weight: 12.2kg