Multimeters UT 139B

UT139 series is high reliability, high security, automatic measurement range modern digital multimeters. With synchronous display function with super large screen digital and high resolution analog pointer, full range overload protection and unique appearance design; and with the frequency converter VFD measurement function, can be stable measurement of high frequency interference signal frequency or current situation; combined with true RMS measurement, data storage, relative measurement, maximum / minimum, under pressure prompt, backlight and auto power off function, which becomes more superior performance of electrical instruments. It is suitable for measurement of smelting, communication, manufacturing, petroleum, national defense, university, electric power, chemical industry and other industries. It’s an ideal tool for the maintenance and repair of the circuit, power equipment.

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Specifications Range Best Accuracy
Model UT139B
DC Voltage (V) 40mV/400mV/4V/40V/400V/600V ±(0.5%+2)
AC Voltage (V) 40mV/400mV/4V/40V/400V/600V ±(0.8%+3)
DC Current (A) 400μA/4000μA/40mA/400mA/4A/10A ±(0.8%+2)
AC Current (A) 400μA/4000μA/40mA/400mA/4A/10A ±(1%+3)
Resistance (Ω) 400Ω/4KΩ/40KΩ/400KΩ/4MΩ/40MΩ ±(0.8%+2)
Capacitance (F) 9.999nF/99.99nF/999.9nF/9.999μF/99.99μF/999.9μF/9.999mF/100mF ±(4.0%+5)
Frequency (Hz) 9.999Hz~10MHz ±(0.1%+4)
Display Count 4000
Auto Range
Manual Range
Duty Cycle 0.1% ~ 99.9%
True RMS
Bandwidth(Hz) 45Hz~1kHz
Diode Around 3V
Battery Test
Auto Power Off Around 15 minutes
Continuity Buzzer
Low Battery Indication ≤2.4V
Data Hold
Relative Mode
Input Protection 600Vrms
Input Impedance for DCV 100MΩ~1GΩ
General Characteristics
Power AA1.5*2
LCD Size 58 X 36 mm
Product Color Red and Grey
Product Net Weight 370g
Product Size 175 X 80 X 48.5 mm
Standard Accessories Battery, Test Lead