Related Manuals for UNI-T UT39E
Summary of Contents for UNI-T UT39E
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Page 1: Table Of Contents
Model UT39E: OPERATING MANUAL TABLE OF CONTENTS TITLE PAGE Overview Unpacking Inspection Safety Information Rules For Safe Operation International Electrical Symbols The Meter Structure Functional Buttons Display Symbols Measurement Operation A. DC Voltage Measurement B. AC Voltage Measurement C. DC Current Measurement D. -
Page 2: Overview
To avoid electric shock or personal injury, read the “Safety Information” and “Rules for Safety Operation” carefully before using the Meter. Digital Multimeter Model UT39E (hereafter referred to as “the Meter”) is a 4 1/2 digits with steady operations, fashionable structure and highly reliable hand-held measuring instrument. -
Page 3: Safety Information
Model UT39E: OPERATING MANUAL Safety Information This Meter complies with the standards IEC61010: in pollution degree 2, overvoltage category (CAT. I 1000V, CAT. II 600V) and double insulation. CAT. I: Signal level, special equipment or parts of equipment, telecommunication, electronic, etc., with smaller transient overvoltages than overvoltages CAT. - Page 4 Model UT39E: OPERATING MANUAL The rotary switch should be placed in the right position and no any changeover of range shall be made during measurement is conducted to prevent damage of the Meter. When the Meter working at an effective voltage...
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Page 5: International Electrical Symbols
Model UT39E: OPERATING MANUAL International Electrical Symbols Deficiency of Built-In Battery AC (Alternating Current) AC or DC Double Insulated Warning. Refer to the Operating Manual Conforms to Standards of European Union Grounding DC (Direct Current) Diode Continuity Test Fuse The Meter Structure (see figure 1) 1. -
Page 6: Functional Buttons
Model UT39E: OPERATING MANUAL Functional Buttons Below table indicated for information about the functional button operations Operation Performed Button Turn the Meter on and off. POWER Press down the POWER to turn on the Meter. (Yellow Button) Press up the POWER to turn off the Meter. -
Page 7: Measurement Operation
Model UT39E: OPERATING MANUAL Measurement Operation Make sure the Sleep Mode is not on if you found there is no display on the LCD after turning on the Meter. Make sure the Low Battery Display is not on, otherwise false readings may be provided. -
Page 8: Ac Voltage Measurement
Model UT39E: OPERATING MANUAL Note If the value of voltage to be measured is unknown, use the maximum measurement position (1000V) and reduce the range step by step until a satisfactory reading is obtained. The LCD displays “1” indicating the existing selected range is overloaded, it is required to select a higher range in order to obtain a correct reading. -
Page 9: Dc Current Measurement
Model UT39E: OPERATING MANUAL The LCD displays “1” indicating the existing selected range is overloaded, it is required to select a higher range in order to obtain a correct reading. In each range, the Meter has an input impedance of approx. -
Page 10: Ac Current Measurement
Model UT39E: OPERATING MANUAL To measure current, do the following: 1. Turn off power to the circuit. Discharge all high-voltage capacitors. Insert the red test lead into the mA or 20A terminal and the black test lead into the COM terminal. When... - Page 11 Model UT39E: OPERATING MANUAL To measure current, do the following: 1. Turn off power to the circuit. Discharge all high-voltage capacitors. 2. Insert the red test lead into the mA or 20A terminal and the black test lead into the COM terminal. When...
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Page 12: Measuring Resistance
Model UT39E: OPERATING MANUAL E. Measuring Resistance (see figure 5) Black (figure 5) Warning To avoid damages to the Meter or to the devices under test, disconnect circuit power and discharge all the high-voltage capacitors before measuring resistance. To measure resistance, connect the Meter as follows: 1. -
Page 13: Measuring Diodes & Continuity
Model UT39E: OPERATING MANUAL F. Measuring Diodes & Continuity Warning To avoid damage to the Meter or to the equipment under test, disconnect circuit power and discharge all high-voltage capacitors before measuring diodes and continuity. Never attempt to input over 60V in DC or 3V rms in AC to avoid personal dangerous. -
Page 14: Frequency Measurement
Model UT39E: OPERATING MANUAL Testing for Continuity To test for continuity, connect the Meter as below: 1. Insert the red test lead into V terminal and the black test lead into the COM terminal. 2. Set the rotary switch to 3. -
Page 15: Capacitance Measurement
Model UT39E: OPERATING MANUAL To measure frequency, connect the Meter as follows: 1. Insert the red test lead into the V terminal and the black test lead into the COM terminal. 2. Set the rotary switch to an appropriate measurement position in kHz range. -
Page 16: Measuring Transistor
Model UT39E: OPERATING MANUAL Note For testing the capacitor with polarity, connect the red test lead to anode & black test lead to cathode When the tested capacitor is shorted or the value is overloaded, the LCD display “1”. To minimize the measurement error caused by the distributed capacitor, the connection should be as short as possible. -
Page 17: Sleep Mode
Model UT39E: OPERATING MANUAL Sleep Mode To preserve battery life, the Meter automatically turns off if you do not turn the rotary switch or press any button for around 15 minutes. At that time, the Meter consumes around 10µA current. -
Page 18: Accuracy Specifications
Model UT39E: OPERATING MANUAL Accuracy Specifications Accuracy: (a% reading + b digits), guarantee for 1 year. Operating temperature: 23 Relative humidity:<75%. Temperature coefficient: 0.1 x (specified accuracy) / 1 A. DC Voltage Range Resolution Accuracy Overload Protection 200mV 0.01mV (0.05%+3) 250V DC or AC rms. -
Page 19: Ac Current
Model UT39E: OPERATING MANUAL Remark: At 20A Range: For continuous measurement 10 seconds and interval not less than 15 minutes Measurement voltage drop: Full range at 200mV. D. AC Current Range Resolution Accuracy Overload Protection 0.0001mA (0.8%+10) 0.315A. 250V fast 200mA 0.01mA... -
Page 20: Diodes And Continuity Test
Model UT39E: OPERATING MANUAL F. Diodes and Continuity Test Function Range Resolution Input Protection Remark Open circuit Diode 0.1mV voltage approx.2.8V 250V rms Approx. <70 Continuity buzzer beeps Buzzer continuously G. Frequency Range Resolution Accuracy Overload Protection 2kHz 0.0001kHz (2%+5) -
Page 21: Maintenance
Model UT39E: OPERATING MANUAL Maintenance This section provides basic maintenance information including battery and fuse replacement instruction. Warning Do not attempt to repair or service your Meter unless you are qualified to do so and have the relevant calibration, performance test, and service information. -
Page 22: Replacing The Fuses
Model UT39E: OPERATING MANUAL To replace battery: 1. Disconnect the connection between the testing leads and the circuit under test, and remove the testing leads away from the input terminals of the Meter. 2. Press the Meter power off 3. Remove the screw from the battery compartment, and then take out the battery door from the battery compartment. - Page 23 Model UT39E: OPERATING MANUAL 7. Install ONLY replacement fuses with the identical type and specification as follows and make sure the fuse is fixed firmly in the bracket. 0.315A. 250V fast type fuse, 5 x 20mm. 8. Rejoin the case bottom and the case top, and install the screw.
- Page 24 Model UT39E: OPERATING MANUAL Copyright 2004 Uni-Trend Group Limited. All rights reserved. Manufacturer: Uni-Trend Technology (Dongguan) Limited Dong Fang Da Dao Bei Shan Dong Fang Industrial Development District Hu Men Town, Dongguan City Guang Dong Province China Postal Code: 523 925...