UT255E - Measurement Uni-T - Free user manual and instructions
Find the device manual for free UT255E Uni-T in PDF.
Pick your language and provide your email: we'll send you a specifically translated version.
| Product Type | Digital Clamp Meter (Leakage Current Tester) |
| Brand | Uni-T |
| Model | UT255E |
| Measurement Category | CAT II 600V |
| AC Current Range | 0.01 mA to 30 A |
| AC Current Resolution | 0.01 mA |
| AC Voltage Range | 0.1 V to 600 V |
| Resistance Range | 0.1 Ω to 2000 Ω |
| Frequency Range | 45 Hz to 400 Hz |
| Continuity Test | Yes, with audible buzzer |
| Display | LCD with backlight |
| Data Hold | Yes |
| Clamp Aperture | 30 mm maximum conductor diameter |
| Power Supply | 9 V alkaline battery (6F22 type) |
| Dimensions | 230 x 80 x 40 mm |
| Weight | 350 g |
| Auto Power Off | Yes, after 15 minutes of inactivity |
| Low Battery Indicator | Yes |
| Operating Temperature | 0 °C to 40 °C |
| Storage Temperature | -10 °C to 50 °C |
| Safety Compliance | IEC 61010-1, EN 61326 |
| Maintenance and Cleaning | Wipe with dry, lint-free cloth; do not use solvents |
| Safety Tips | Use appropriate PPE and do not use beyond rated voltage |
| Battery Replacement | Replace with a new 9V battery when the low battery indicator appears |
| Calibration | Recommended annually for accurate readings |
Frequently Asked Questions - UT255E Uni-T
How do I measure leakage current with the UT255E?
To measure leakage current, set the rotary switch to the leakage current mode (often indicated by a waveform symbol). Clamp the conductor around the wire or ground lead, ensuring it is centered in the clamp jaws. Read the value on the LCD. The leakage current measurement helps detect insulation faults.
Can the UT255E measure DC current?
Yes, the UT255E is designed to measure both AC and DC current, including DC leakage current. Select the appropriate mode on the dial, then clamp the conductor and read the measurement.
What is the maximum voltage that can be measured?
The UT255E can measure AC voltage up to 600 V. It is rated for CAT II 600 V, meaning it can be used on single-phase or three-phase distribution boards safely with proper precautions.
What type of battery does it use and how to replace it?
The device uses a standard 9 V battery (6F22). To replace it, turn off the meter, remove the battery compartment screw, open the cover, and replace the old battery with a new one, observing polarity.
How do I use the data hold function?
Press the HOLD button to freeze the current reading on the display. This is useful when measuring in tight spaces or when you need to record the value after removing the clamp from the conductor. Press HOLD again to release.
How do I perform a continuity test?
Set the dial to the continuity mode (usually indicated by a diode or speaker symbol). Connect the test leads across the circuit. If the resistance is low, the buzzer sounds, indicating electrical continuity. Always power off the circuit before testing.
Is the UT255E suitable for industrial electrical work?
Yes, the UT255E is built for professional electricians and maintenance technicians. With CAT II 600 V rating and a robust clamp design, it can handle common industrial and commercial electrical measurements safely.
How often should the meter be calibrated?
To ensure measurement accuracy, it is recommended to calibrate the UT255E at least once a year or after a major drop or impact. Periodic calibration follows ISO 9001 quality standards and helps maintain reliable readings.
What safety precautions should I take when using this clamp meter?
Always follow safe electrical practices. Wear insulated gloves and safety glasses, do not use the meter on circuits exceeding 600 V, and ensure the test leads are in good condition. Never operate the meter with the battery cover removed.
How do I clean and maintain the UT255E?
Wipe the exterior with a dry, lint-free cloth after each use. Do not use water, abrasive cleaners, or solvents. Periodically inspect the clamp jaws for wear or damage, and keep the device in a dry case when not in use.
User questions about UT255E Uni-T
0 question about this device. Answer the ones you know or ask your own.
Ask a new question about this device
No questions yet. Be the first to ask one.
Download the instructions for your Measurement in PDF format for free! Find your manual UT255E - Uni-T and take your electronic device back in hand. On this page are published all the documents necessary for the use of your device. UT255E by Uni-T.
USER MANUAL UT255E Uni-T
Manual assistant
Powered by Anthropic
Waiting for your message
Product information
Brand : Uni-T
Model : UT255E
Category : Measurement