I. Introduction——— Il. Pan Box Inspection— 111. Safety Instructions— IV. Symbols V. Featureg———m—77—Vl. Technical specifications— VII.Operation Instructions—— VII.
UT125C User Manual I Introduction UT125C is a pain-size, stable and reliable multi meter with 4000 display counts. It is an ideal tool to measure AC/DC voltage and current, resistance, capacitance, frequency, diode and continuity etc. with overload protection. This product complies with CAT Ill 600V and is granted with CE and Cetus certificates. II. Open Box Inspection Open the package box and take out the device.
UT125C User Manual 4) The test leads should be properly Inserted Into the corresponding Jack 5) Never Input voltage and current exceeding the values listed on the device. 6) Do not switch the functional dial during measuring. 7) Usa the replacement fuse of the pacified model. 8) To avoid electric shock, potential difference between COM and the grounding shall not exceed 600V. 9) Usa caution to measure voltage >DC 60V or AC victims.
UT125C User Manual V. Features 1) LCD display: Visible area: 38x23mm Maximum display count 4000 2) Over range indication: OL, with overload protection 3) Auto power off. The device will automatically power off if no operation for 30 minutes. Press any button to wake up the device. 4) Operating temperature: 5) Storage temperature: 6) Low power indicator: K2 7} Buzzer: The buzzer will goes off once at any valid operation. 8) Other functions: Data hold, NCV, back light UT125C User Manual Vl.
UT125C User Manual UT125C User Manual 4. AC current 5. Resistance measurement. Range Resolution Accuracy Range Resolution Accuracy 400A 0. 1pA 4000 010 mh 0.001mA aK 10 + (2.0848 + (1%+ 40h 0.01mA @ ) 40k0 10Q 400mA 0. mA 4000 1000 A Overload protection: Fuse 2%10) Frequency response: 45~400Hz (Only for sine wave and triangle wave) 40M0 10KQ + (2.
UT125C User Manual 9. NCV Position Remark 1.AC voltage 2 Measurement outdistance; NCV LED on Nev 3.Measurement NCV LED off NCV status unspecified. Vil. Operation instructions a. To avoid false reading, replace the battery If the battery low power symbol ars. b. Fey pacey attention to the waning sign besides the fast lead housing, ind ho ing that the tested voltage or current must not exceed the values listed an the device. ©. Before measurement, switch the dial to popper position. Structure: 1.
UT125C User Manual 1. DC voltage measurement T= 1) Switch the dial Press & to select DC, Connect {est leads with the load In parallel. 3} Reading is displayed. Awakenings: ® Do not Input voltage over 600vims, of It may pose shack hazard. # Be cautious when measuring high voltage A Note: ® Before using the device, iris suggested to measure a known voltage for verification. #® |f LCD display shows OL, It means over range. ® When input impedance about 10MQ, there Is measurement errors.
UT125C User Manual 3. DC current measurement 1) Switch the dial to mAs or pAs 2) Press © to select DC 3) Connect test leads with the circuit in series. 4) Reading Is displayed. Notes: Ba fore measuring, switch off the power supply of the circuit. ® If the range of the measured current is unknown, select the maximum range and then accordingly reduce. * There are fuses Inside Managua Jack. Do not connect the tacit leads with any circuits in parallel. * Under AC mode, readings are average value.
21 UT125C User Manual 4. AC current measurement 1) Switch the dial to mAm or pA® 2) Press © to select AC 3) Connect test leads with the circuit In serfs. Reading is displayed. Snots: * Ba fore measuring, switch off the power supply of the cultural. # If connect test leads with the circuit in series, please power off the circuit in advance. If the range of the measured current Is unknown, select the maximum range and then accordingly reduce. ® There are fuses inside Managua jack.
UT125C User Manual 5.Resistance measurement. 1) Switch the dial to 13% 2) Press © to select resistance, Connect test leads with the load in parallel. 3) Reading is displayed. Notes: # If the resistor is open or over the range, the “OL” symbol will be displayed on the screen. + Before measuring resistance, switch off the power supply of the circuit, and fully discharge all capacitors. + When measuring low resistance, the test leas will produce 0.10 ~ 0.20) measurement error.
UT125C User Manual 6. Capacitance measurement 1) Switch the dial to ¥3 2) Press © to salacity capacitance, Connect test leads with the load In parallel. 3} Reading Is displayed. Notes: ® Switch off the power supply to the circuit, and fully discharge all capacitors * Before measuring capacitors (especially for high voltage capacitors), please fully discharge them. * If the tested capacitor is shorted or its capacity is over the specified range “OL” symbol will be displayed on the screen.
UT125C User Manual 7. Frequency measurement 1) Switch the dial to voltage position, press (& button to select frequency 2) Connect the test leads to the load 3) Reading is displayed. A Wakings: # Input value must meet the standards of the technical specifications. 27 UT125C User Manual 8.Diode measurement 1) Switch the dial to #3 2) Press 3 to select diode, connect test leads with the load in parallel. 3) Reading Is displayed. 4) "OL" symbol appears when the diode is open or polarity is reversed.
UT125C User Manual UT125C User Manual 9. Continuity measurement 10. NCV measurement 1) Switch the dial to #3 1) Tum on the device; switch the range 2) Press © to select continuity, connect selector at any position, test leads with the load in parallel. : . 3) Connect test leads with the load in parallel. 2) Place the devious near the measured object. 3) If the voltage under test exceeding 100V/50Hz, NCV LED will Reading is displayed. Measured resistance >100L2, circuit is in open status.
UT125C User Manual 11. Buttons functions SELECT : Cycle switch through AC/DC voltage, current, resistance, continuity, diode and capacitance. (Only for HOLD 4 © ® Press the button once to hold the reading. Press again to unlock the reading and enter general measurement modes. @® Press this button for 2 seconds to turn on the back light. Press for 2 seconds to tum off the back light. Frequency/duty ratio © Under voltage position, switch between frequency and duty ratio.
UT125C User Manual 2. Replacements Battery replacement: To avoid false read when the battery indicator K appears. Battery Specification: AAA 1.5V x 2 1) Switch the dial to “OFF “position and remove the test leads from the input terminal. 2) Take off the protective case. Loosen 1 ‘screw on battery cover; remove the cover to replace the battery. Please Identify the positive and negative pole.
