UT265B - Measurement Uni-T - Free user manual and instructions
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| Brand | Uni-T |
| Model | UT265B |
| Product Type | Digital Clamp Meter |
| Measurement Functions | AC/DC Voltage, AC Current, Resistance, Capacitance, Frequency, Diode, Continuity |
| Display | 4000 counts LCD with backlight |
| DC Voltage Range | 400mV/4V/40V/400V/600V |
| AC Voltage Range | 4V/40V/400V/600V |
| AC Current Range | 40A/400A/1000A |
| Resistance Range | 400Ω/4kΩ/40kΩ/400kΩ/4MΩ/40MΩ |
| Capacitance Range | 40nF/400nF/4μF/40μF/400μF/4mF |
| Frequency Range | 10Hz/100Hz/1kHz/10kHz/100kHz/1MHz/10MHz |
| Jaw Opening | 30mm |
| Safety Rating | CAT III 600V, CAT II 1000V |
| Power Supply | 1.5V AAA batteries (2 pieces) |
| Dimensions | 215 x 68 x 46 mm |
| Weight | Approx. 235g (including batteries) |
| Auto Range | Yes |
| Data Hold | Yes |
| Relative Measurement | Yes |
| Auto Power Off | Yes (adjustable) |
| Low Battery Indication | Yes |
| Accessories Included | Test leads, temperature probe, carrying case, manual |
Frequently Asked Questions - UT265B Uni-T
How do I measure AC voltage with the UT265B?
Set the rotary switch to the ACV position. Insert the black test lead into the COM jack and the red test lead into the VΩ jack. Connect the probes across the source. Read the voltage on the display.
How do I measure AC current?
Set the rotary switch to the ACA range. Press the trigger to open the clamp jaws and clamp around a single conductor. Ensure the jaws are fully closed. Read the current on the display.
How do I change the batteries?
Turn off the meter and remove the test leads. Slide off the battery cover on the back. Replace the two AAA 1.5V batteries with correct polarity. Reattach the cover.
What is the maximum voltage the UT265B can measure?
The maximum DC voltage is 600V and AC voltage is 600V. Do not exceed these limits to avoid damage or injury.
How do I use the data hold function?
Press the DATA HOLD button to freeze the current reading on the display. Press again to release. This is useful when measuring in dimly lit areas.
How do I measure resistance?
Set the rotary switch to the Ω position. Insert the black lead into COM and red lead into VΩ. Connect the probes across the resistor. Read the resistance value.
How do I test continuity?
Set the rotary switch to the continuity position (usually a diode symbol with sound waves). Insert leads as usual. Touch the probes together to verify the buzzer sounds. Then test the circuit. A beep indicates continuity.
What does 'OL' mean on the display?
OL stands for Over Load. It indicates that the measured value exceeds the selected range. Select a higher range or check the circuit for open conditions.
How do I clean the UT265B?
Turn off the meter and remove test leads. Wipe the housing with a damp cloth and mild detergent. Do not use abrasives or solvents. Keep the jaws clean and dry.
Does the UT265B require calibration?
For accurate measurements, it is recommended to calibrate the meter annually or after heavy use. Contact a qualified service center or Uni-T support for calibration.
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