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Electrical Instruments

UT139 True RMS Digital Multimeter

Home Electrical Instruments 4.Handheld MultimeterUT139 True RMS Digital Multimeter


UT139B True RMS Digital Multimeter


The UT139 series of true RMS digital multimeters are characterized by high reliability, high security, automatic range, and handheld multimeter. With large screen digital and high-resolution function, full-scale overload protection and unique design; and VFD (Variable-frequency Drive) measurement function, it can stably measure variable-frequency voltage or current occasions with high-frequency interference signals; True rms measurement, data retention, relative measurement, maximum/minimum, undervoltage indication, backlighting, and auto-shutdown make it a new generation of practical electrical measurement instruments with superior performance. It can be used as an ideal tool for testing, maintenance and repair of various colleges and universities, smelting, communication, manufacturing, petroleum, defense, electric power, foundry, and circuit power equipment.



Specifications

Range

Best Accuracy

Model


UT139A

UT139B

UT139C

DC Voltage (V)

20mV/ 200mV/2V/ 20V/ 200V/600V

±(0.5%+2)



40mV/400mV/4V/ 40V/ 400V/600V


±(0.5%+2)


60mV/600mV/6V/ 60V/ 600V



±(0.5%+2)

AC Voltage (V)

20mV/200mV/2V/ 20V/ 200V/ 600V

 ±(1.0%+3)



40mV/400mV/4V/40V/400V/600V


±(0.8%+3)


60mV/600mV/6V/ 60V/ 600V



±(0.8%+3)

DC Current (A)

200μA/2000μA/20mA/ 200mA/ 2A/10A

± (0.7%+2)



400μA/4000μA/40mA/400mA/ 4A/10A


± (0.7%+2)


600μA/6000μA/60mA/ 600mA/ 6A/10A



± (0.7%+2)

AC Current (A)

200μA/2000μA/20mA/ 200mA/ 2A/10A

 ±(1.0%+3)



400μA/4000μA/40mA/400mA/ 4A/10A


 ±(1.0%+3)


600μA/6000μA/60mA/ 600mA/ 6A/10A



 ±(1.0%+3)

Resistance (Ω)

200Ω/ 2KΩ/ 20KΩ/ 200KΩ/ 2MΩ/ 20MΩ

 ±(1.0%+2)



400Ω/ 4KΩ/ 40KΩ/ 400KΩ/ 4MΩ/ 40MΩ


±(0.8%+2)


600Ω/ 6KΩ/ 60KΩ/ 600KΩ/ 6MΩ/ 60MΩ



±(0.8%+2)

Capacitance (F)

9.999nF/99.99nF/999.9nF/9.999μF/99.99μF/999.9μF/9.999mF/99.99mF


±(4.0%+5)

±(4.0%+5)

Frequency(Hz)

10Hz-10MHz


±(0.1%+4)

±(0.1%+4)

Temperature (°C)

-40°C~1000°C



 ±(1.0%+3)

Temperature (°F)

-40°F~1832°F



 ±(1.5%+5)

Features



Display Count


1999

3999

5999

Auto Range


Yes

Yes

Yes

Manual Range


Yes

Yes

Yes

True RMS


Yes

Yes

Yes

Frequency response


45Hz-400Hz

45Hz-1kHz

VFC


Yes

Yes

Yes

Duty cycle

0.1%-99.9%


Yes

Yes

Diode


Around 2V

Around 3V

Around 3V

NCV


Yes

Yes

Yes

Battery Test

1.5V/9V

Yes



Auto Power Off

Around 15 Minutes

Yes

Yes

Yes

Continuity Buzzer


Yes

Yes

Yes

Low Battery Indication

≤2.5V

Yes

Yes

Yes

Data Hold


Yes

Yes

Yes

Relative measurement


Yes

Yes

Yes

Maximum/minimum


Yes

Yes

Yes

LCD backlight



Yes

Yes

Input protection

600Vrms

Yes

Yes

Yes

Input resistance

200mV≥100MΩ200mV≥1GΩ

Yes



40mV≥100MΩ400mV≥1GΩ


Yes


60mV≥100MΩ600mV≥1GΩ



Yes

Current caliper measurement

DCA 60A



±(1.0%+3)

ACA 60A



±(1.2%+3)

General Characteristic


Power

AA1.5*2

LCD Size

58mm X36mm     

Product Color

Red and Grey      

Product Net Weight

370g  

Product Size

175mm X 81mm X48.5mm  

Standard Accessories

Battery, test pen, temperature probe(UT139C)

Standard Individual Packing

Gift Box,English Manual,warranty card

Standard Quantity Per Carton

40 PCs

Standard Carton Measurement

645mm X 450mm X 340mm (0.099 CBM Per Standard Carton)

Standard Carton Gross Weight

25.5Kg

Optional Accessories

Current sensor AC/DC40A(UT139C)