UT256A P/N:110401109062X 200A AC Fork Meter
UT256A User Manual Preface Thank you for purchasing the new fork meter. In order to use this product safely and correctly, please read this manual thoroughly, especially the Safety Instructions part. After reading this manual, it is recommended to keep the manual at an easily accessible place, preferably close to the device, for future reference.
UT256A User Manual UT256A User Manual Table of Contents I. Overview -------------------------------------- 4 II. Accessories ---------------------------------- 4 III. Safety Instructions ------------------------ 5 IV. Electrical Symbols ------------------------- 7 V. External Structure -------------------------- 8 I. Overview The UT256A is a stable, safe and reliable 6000-count AC fork meter.
UT256A User Manual UT256A User Manual III. Safety Instructions 8. Never input a voltage or current which exceeds the specified limit. If the range of the measured value is unknown, the maximum range should be selected. 9. Before measuring the resistance and continuity online, switch off the power supply of the circuit, and fully discharge all capacitors to avoid inaccurate measurement. 10. When the “ ” symbol appears on the LCD, please replace the batteries in time to ensure measurement accuracy.
UT256A User Manual UT256A User Manual IV. Electrical Symbols Symbol Description Direct current Alternating current Earth (ground) TERMINAL Equipment protected throughout by DOUBLE INSULATION or REINFORCED INSULATION Caution, possibility of electric shock Warning or Caution Application around and removal from UNINSULATED HAZARDOUS LIVE conductors is permitted. V. External Structure (Picture 1) 1. NCV sensor 2. Open jaw fork 3. Flashlight LED light 4. Hand guard 5. Visual NCV alarm indicator 6.
UT256A User Manual UT256A User Manual VI. LCD Display (Picture 2) VII. Function Buttons Picture 2 Description Symbol Warning sign, indicating AC voltage >35V and DC voltage >50V 1.SELECT button: When the function switch is in the composite function position, short press this button to switch between the corresponding functions. 2.H/ button: Short press this button to enable/disable the data hold function. Long press (>2s) this button to turn on/off the flashlight. 3.
UT256A User Manual UT256A User Manual VIII. Operating Instructions 2. AC Voltage/Frequency Measurement (Picture 4) 1. AC Current/Frequency Measurement (Picture 3) 1) Turn the function switch to the position, and use the SELECT button to switch to AC current/frequency measurement. 2) Clamp one current-carrying wire and keep it at the bottom of the U-type open jaw fork. 3) Read the measured value on the display (frequency response: 50Hz~60Hz).
UT256A User Manual UT256A User Manual 3. DC Voltage Measurement (Picture 5) 1) Turn the function switch to the position. 2) Insert the red test lead into the signal input jack, black into the COM input jack, and make the probes in contact with both ends of the measured object (part). 3) Read the measured value on the display. Red Be cautious to avoid electric shock when measuring high voltages. Before each use, verify meter operation by measuring a known voltage. 4.
UT256A User Manual UT256A User Manual Caution: Do not input voltages higher than DC 60V or AC 30V to avoid personal injury. Before measuring the resistance online, switch off the power supply of the circuit, and fully discharge all capacitors to ensure accurate measurement. If the resistance is >0.5Ω when the test leads are shortcircuited, please check the test leads for looseness or other abnormalities.
UT256A User Manual UT256A User Manual To disable the auto power off function, press and hold the SELECT button in the off state, and then turn on the meter. The buzzer will make five consecutive beeps. To resume the auto power off function, restart the meter. About 1 minute before auto power off, the buzzer will make five consecutive beeps. If there is no operation within the 1 minute, the meter will automatically shut down accompanied by one long beep.
UT256A User Manual UT256A User Manual 1) AC Current/Frequency 2) Voltage Range 200.0A Resolution 0.1A Accuracy 0.2A ≤ACA ≤2.0A: ± (1.8%+2) Range Resolution 6.000V 0.001V 2.0A
UT256A User Manual UT256A User Manual The AC crest factor of a non-sinusoidal wave decreases linearly to about 1.8 at 6000 counts. The additional error should be added for the corresponding crest factor as follows: a) Add 3% when crest factor is 1~2 b) Add 5% when crest factor is 2~2.5 3）Continuity Range Resolution Remark 0.1Ω Resistance <10Ω: Buzzer beeps Resistance >100Ω: no beep 600.0Ω 5) Audio/Visual alarm indicator NCV Continuity AC/DC voltage 4) Resistance Range Resolution Accuracy 600.
UT256A User Manual UT256A User Manual 3) The maintenance and service must be implemented by qualified professionals or designated departments. 2. Battery Replacement (Picture 8) 1) Turn off the meter and remove the test leads from the input jacks. 2) Unscrew and remove the battery cover. 3) Replace with 2 standard AA batteries according to the polarity indication. 4) Secure the battery cover and tighten the screw. Picture 8 3.
