UT139B digital multimeter new versatile multimeter from the company unit with the function True RMS. With the help of this device makes measuring AC and DC current, voltage, resistance, capacitance, frequency and duty cycle, diode conduct tests, file transfer electric circuits. The device enables to measure the true RMS value (True RMS) in the frequency range 45 Hz 400 Hz and the opportunity to work with the frequency converters (VFD). Unlike other models of multimeters series UT139 unit are powered by two batteries AA 1.5 V.
The functionality of the multimeter UT139B:
- Measurement functions:
- DC
- AC
- constant voltage
- variable voltage
- resistance
- capacity
- frequency
- the duty cycle
- continuity test
- diode test
- Data hold function
- Auto power off (sleep mode)
- Auto / Manual ranging (range)
- Relative measurement mode
- A function of the measurements of the maximum and minimum values
- The function of True RMS (measurement of true RMS values)
- Indicator low battery
- The display backlight
Technical characteristics of the multimeter UT139B:
| General characteristics | |
| Screen | 4000-bit LCD, 58 x 36 mm |
| Food | 1.5 V battery (AA) - 2 PCs. |
| Dimensions | 175 X 80 X 48.5 mm |
| Weight | 370 g |
| Measurement | |
| Constant voltage (DC) | 400 mV /4 V / 40 V/ 400 V / 600 V; ±(0.5%+2) |
| An alternating voltage (AC) | 4 V /40 V / 400 V / 600 V; ±(0.8%+3) |
| Direct current (DC) | 400 µa / 4000 µa / 40 mA / 400 mA / 4A / 10 A; ± (0.8%+2) |
| Alternating current (AC) | 400 µa / 4000 µa / 40 mA / 400 mA / 4A / 10 A; ±(1.0%+3) |
| Resistance | 400 Ohm / 4 KOhm / 40 KOhm / 400 KOhm / 4 MOhm / 40 MOhm; ±(0.8%+2) |
| Frequency | 10 Hz To 10 MHz; ±(0.1%+4) |
| Capacity | 9.999 nF to 99.99 MF; ±(4.0%+5) |
| The relative duty cycle | 0.1% 99.9% |
| Special functions | |
| Range | Automatic / Manual |
| Continuity test (with buzzer) | + |
| Diode test | + |
| Data hold function | + |
| Auto power off (sleep mode) | + |
| The display backlight | + |
| A function of relative measurements | + |
| The maximum/minimum values | + |
| The function of True RMS (true RMS value) | + |
Supplied with the multimeter UT139B:
- Multimeter UT139B
- Test leads – 1 pair
- Battery – 2 PCs.
- Instruction manual - 1 PC.