Overview
Rated CAT III 1000 V / CAT IV 600 V, the UT171B is a 60,000-count True-RMS multimeter built for plant and process work. The high count resolves small changes other meters round off, True-RMS keeps AC readings accurate on the distorted waveforms around drives and switching loads, and a high-contrast EBTN display stays readable on a plant floor.
It covers DC voltage to (0.025%+5), AC and DC current to 10 A, resistance, capacitance, frequency to 10 MHz, and temperature to 1000 , with non-contact voltage detection and storage for 9999 readings. A 7.4 V rechargeable Li-ion pack and 1 m drop rating suit daily field use. It’s backed by UNI-T’s nearly 40 years of test-meter manufacturing.
Key Features
- 60,000-count resolution with high-contrast EBTN display
- True-RMS AC voltage and current
- DC voltage accuracy (0.025%+5); AC bandwidth to 100 kHz
- AC/DC current to 10 A; resistance to 60 M, capacitance to 60 mF
- Frequency to 10 MHz; temperature 40 to 1000
- Non-contact voltage (NCV) detection
- Low-impedance (LoZ) ACV mode to reject ghost voltages
- 9999-reading storage
- CAT III 1000 V / CAT IV 600 V; 1 m drop; rechargeable Li-ion
UT171B Details
60,000-Count True-RMS Measurement
The 60,000-count display resolves fine detail across the range, and True-RMS sensing keeps AC voltage and current accurate on the non-sinusoidal waveforms common around variable-frequency drives and electronic loads where average-responding meters read low.
Industrial Accuracy & Bandwidth
DC voltage accuracy of (0.025%+5) and 100 kHz AC bandwidth cover precise troubleshooting and signal work, with resistance to 60 M, capacitance to 60 mF, frequency to 10 MHz, and thermocouple temperature to 1000 .
Safe Measurement Features
Non-contact voltage detection flags live conductors before you probe, and a low-impedance ACV mode loads out induced ghost voltages so a de-energized circuit reads as dead. The CAT III 1000 V / CAT IV 600 V rating covers distribution-level work.
Field Build
An EBTN display holds contrast at wide angles and in bright light, a 7.4 V 2000 mAh rechargeable pack runs long shifts, and a 1 m drop rating handles the knocks of plant use.
Compare the UT171 Series
| UT171B | UT171C | |
|---|---|---|
| Display | EBTN | OLED |
| Square-wave output | Yes | |
| Non-contact voltage (NCV) | Yes |
Applications
Plant and process troubleshooting; motor-drive and control-panel work where True-RMS and LoZ matter; commissioning and preventive maintenance; and bench or field measurement that needs 60,000-count resolution.
Frequently Asked Questions
What does 60,000-count resolution give me?
Finer reading detail than a typical 6,000-count meter small changes that would otherwise be rounded off stay visible.
Is the UT171B True-RMS?
Yes AC voltage and current are True-RMS, accurate on distorted waveforms around drives and electronic loads.
How does the UT171B differ from the UT171C?
The UT171B uses an EBTN display and includes NCV; the UT171C uses an OLED display and adds a square-wave output. Core measurement performance is the same.
Specifications
| DC Voltage | 1000 V, (0.025% + 5) |
| AC Voltage | 1000 V, (0.4% + 40) |
| DC Current | 10 A, (0.15% + 10) |
| AC Current | 10 A, (0.75% + 20) |
| Resistance | 60 M, (0.05% + 2) |
| Admittance | 60 nS, (1% + 10) |
| Capacitance | 60 mF, (2.5% + 5) |
| Frequency | 10 Hz to 10 MHz, (0.01% + 5) |
| Temperature | -40 to 1000 , (1% + 3) |
| Display Count | 60000 |
| Display Type | EBTN |
| True RMS | Yes |
| AC Bandwidth | 100 kHz |
| LoZ (ACV) | Around 3 k |
| Input Impedance (DCV) | 10 M |
| Data Storage | 9999 readings |
| NCV | Yes |
| Power | 7.4 V 2000 mAh Li-ion (rechargeable) |
| Safety Rating | CAT III 1000 V, CAT IV 600 V |
| Drop Protection | 1m |
| Dimensions (W H D) | 206 95 55 mm |
| Weight | 384 g |
Documentation
- UT171B Datasheet
- UT171B User Manual
- UT171B Programming Manual
