Model UT58D: OPERATING MANUAL Table of Contents Title Overview Unpacking Inspection Safety Information Rules For Safe Operation International Electrical Symbols The Meter Structure Rotary Switch Functional Buttons Display Symbols Measurement Operation A. DC and AC Voltage Measurement B. DC and AC Current Measurement C. Measuring Resistance D. Measuring Diodes and Continuity E. Testing for lnductance F. Capacitance measurement G.
Model UT58D: OPERATING MANUAL Title Maintenance A. General Services B. Replacing the Fuses C.
Model UT58D: OPERATING MANUAL Overview Warning To avoid electric shock or personal injury, read the “Safety Information” and “Rules for Safety Operation” carefully before using the Meter. Digital Multimeters Model UT58D (hereafter referred to as “the Meter”) is 3 1/2 digits with ex-large LCD, steady operations, fashionable structure and highly reliable hand-held measuring instrument.
Model UT58D: OPERATING MANUAL Unpacking Inspection Open the package case and take out the Meter. Check the following items carefully to see any missing or damaged part: Item 1 2 3 4 5 6 Description English Operating Manual Test Lead Multi-Purpose Socket Test Clip Holster 9V Battery (NEDA 1604, 6F22 or 009P) Qty 1 piece 1 pair 1 piece 1 piece 1 piece 1 piece In the event you find any missing or damage, please contact your dealer immediately.
Model UT58D: OPERATING MANUAL Safety Information This Meter complies with the standards IEC61010: in pollution degree 2, overvoltage category (CAT. II 1000V, CAT. III 600V) and double insulation. CAT. II: Local level, appliance, PORTABLE EQUIPMENT etc., with smaller transient voltage overvoltages than CAT. III CAT. III: Distribution level, fixed installation, with smaller transient overvoltages than CAT.
Model UT58D: OPERATING MANUAL Rules For Safe Operation (1) Warning To avoid possible electric shock or personal injury, and to avoid possible damage to the Meter or to the equipment under test, adhere to the following rules: l l l l l l l l Before using the Meter inspect the case. Do not use the Meter if it is damaged or the case (or part of the case) is removed. Look for cracks or missing plastic. Pay attention to the insulation around the connectors.
Model UT58D: OPERATING MANUAL Rules For Safe Operation (2) l l l l l l l l l l l When using the test leads, keep your fingers behind the finger guards. Disconnect circuit power and discharge all high -voltage capacitors before testing resistance, continuity, diodes, capacitance or current. Before measuring current, check the Meter’s fuses and turn off power to the circuit before connecting the Meter to the circuit. Replace the battery as soon as the battery indicator appears.
Model UT58D: OPERATING MANUAL International Electrical Symbols AC (Alternating Current). DC (Direct Current). Grounding. Double Insulated. Deficiency of Built-In Battery. Warning. Refer to the Operating Manual. Diode. AC or DC. Fuse. Continuity Test. Conforms to Standards of European Union.
Model UT58D: OPERATING MANUAL The Meter Structure (see figure 1) ( figure 1) 1 2 3 4 5 6 7 8 LCD Display POWER HOLD Button. Rotary Switch COM Input Terminal 20A Input Terminal mA Input Terminal Other Input Terminal.
Model UT58D: OPERATING MANUAL Rotary Switch Below table indicated for information about the rotary switch positions. DC voltage measurement. AC voltage measurement. Transistor Test AC Current Measurement DC Current Measurement Fcx Capacitance Test HLx Inductance Test Diode test Continuity test Resistance measurement.
Model UT58D: OPERATING MANUAL Functional Buttons Below table indicated for information about the functional button operations POWER Turn the Meter on and off. ( Ye l l o w l Press down the POWER to turn on the Button) Meter. l Press up the POWER to turn off the Meter. HOLD (Blue Button) l Press HOLD once to enter hold mode. l Press HOLD again to exit hold mode. l In Hold mode, is displayed and the present value is shown.
Model UT58D: OPERATING MANUAL Display Symbols(1) (see figure 2) ( figure 2) No. Symbol Meaning The battery is low. Warning: To avoid false readings, replace the battery as soon as the battery indicator appears. 1 2 3 AC Warning Symbol. Indicator for AC voltage or current. The displayed value is the mean value. Indicates negative reading. 4 5 6 7 8 Test of diode. The continuity buzzer is on. Date hold is active. Connect Terminal Indicator of connecting test leads into different input terminals.
Model UT58D: OPERATING MANUAL No. Symbol 9 hFE mA, A Meaning The Unit of Transistor Test A: Amperes (amps). The unit of current. mA: Milliamp. 1 x 10-3 or 0.001 amperes. V: Volts. The unit of voltage. mV: Millivolt. 1 x 10-3 or 0.001 volts. 10-15 mH, H H: Henry. The unit of Inductance. -3 mH: Millihenry. 1 x 10 or 0.001 henry.
Model UT58D: OPERATING MANUAL Measurement Operation(1) Black Red ( figure 3) The DC Voltage ranges are: 200mV, 20V, 200V and 1000V. The AC Voltage ranges are: 2V, 200V and 1000V To measure DC Voltage, connect the Meter as follows: 1. Insert the red test lead into theV input terminal and the black test lead into the COM input terminal. 2. Set the rotary switch to an appropriate measurement position in V or V range. 3. Connect the test leads parallel across with the object to be measured.
Model UT58D: OPERATING MANUAL Measurement Operation(2) Note l 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. l 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. l In each range, the Meter has an input impedance of approx.
Model UT58D: OPERATING MANUAL Measurement Operation(3) Warning Never attempt an in-circuit current measurement where the open circuit voltage between terminals and ground is greater than 60V DC or 30V rms. If the fuse burns out during measurement, the Meter may be damaged or the operator himself may be hurt. Use proper terminals, function, and range for the measurement. When the testing leads are connected to the current terminals, do not parallel them across any circuit.
Model UT58D: OPERATING MANUAL Measurement Operation(4) Note l If the value of current to be measured is unknown, use the maximum measurement position, and reduce the range step by step until a satisfactory reading is obtained.
Model UT58D: OPERATING MANUAL Measurement Operation(5) 1. Insert the red test lead into the V input terminal and the black test lead into the COM terminal. 2. Set the rotary switch to an appropriate measurement position in range. 3. Connect the test leads parallel across with the object being measured. The measured value shows on the display. Note The test leads can add 0.1 to 0.3 of error to the slowresistance (200 ) measurement.
Model UT58D: OPERATING MANUAL Measurement Operation(6) D. Measuring Diodes and Continuity (see figure 6) Black Red ( figure 6) 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. To avoid harms to you, never attempt to input voltages higher than 60V DC or 30V rms in AC. Measuring Diodes Use the diode test to check diodes, transistors, and other semiconductor devices.
Model UT58D: OPERATING MANUAL Measurement Operation(7) 2. Set the rotary switch to . 3. For forward voltage drop readings on any semiconductor component, place the red test lead on the component’s anode and place the black test lead on the component’s cathode. The measured value shows on the display. Note “ ” 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 .
Model UT58D: OPERATING MANUAL Measurement Operation(8) Note l When continuity testing has been completed, disconnect the connection between the testing leads and the circuit under test, and remove the testing leads away from the input terminal of the Meter. E. Testing for Inductance (see figure 7) ( figure 7) Warning Make sure the tested inductance is far away from the high electromagnetic to obtain accurate reading.
Model UT58D: OPERATING MANUAL Measurement Operation(9) F. Capacitance Measurement(see figure 8) ( figure 8) Warning To avoid damage to the Meter or to the equipment under test, disconnect circuit power and discharge all high-voltage capacitors before measuring capacitance.Use the DC voltage function to confirm that the capacitor is discharged. To avoid harms to you, never attempt to input voltages higher than 60V DC or 30V rms in AC.
Model UT58D: OPERATING MANUAL Measurement Operation(10) To measure capacitance, connect the Meter as follows: 1. According to the size of the tested object’s leads, select multi-purpose socket or test clip to insert into the mA and V terminal. 2. Set the rotary switch to an appropriate measurement position in Fcx range. 3. Insert the tested object into the corresponding jack of the multi-purpose socket or connect the test clip to the object being measured. The measured value shows on the display.
Model UT58D: OPERATING MANUAL Measurement Operation(11) ( figure 9) 24
Model UT58D: 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. When the Meter is under sleep mode, it consumes 10µA current. To activate the Meter, press POWER for two times. Operation of Hold Mode Warning To avoid possibility of electric shock, do not use Hold mode to determine if circuits are without power. The Hold mode will not capture unstable or noisy readings.
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Model UT58D: OPERATING MANUAL Accuracy Specifications(3) Remarks: l The tested inductance: Q 10, Internal resistance 1.3k. l When the tested inductance is >1H, the obtained reading is only for reference.
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Model UT58D: OPERATING MANUAL Maintenance(1) 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. To avoid electrical shock or damage to the Meter, do not get water inside the case. A. General Service l l l l Periodically wipe the case with damp cloth and mild detergent.
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Model UT58D: OPERATING MANUAL Maintenance(3) 4. Remove the battery from the battery connector. 5. Replace with a new 9V battery (NEDA1604, 6F22 or 006P). 6. Rejoin the case bottom and case top, and reinstall the 3 screws and the holster. ** END ** This operating manual is subject to change without notice.
Model UT58D: OPERATING MANUAL Copyright 2001 Uni-Trend International Limited. All rights reserved. Manufacturer: UNI-TREND TECHNOLOGY(DONG GUAN)LIMITED Address: Dong Fang Da Dao, Bei Shan Dong Fang Industrial Development District, Hu Men Town, Dong Guan City, Guang Dong Province, China Headquarters: Uni-Trend International Limited Address: Rm901, 9/F, Nanyang Plaza 57 Hung To Road Kwun Tong Kowloon, Hong Kong Tel: (852) 2950 9168 Fax: (852) 2950 9303 Email: info@uni-trend.com http://www.uni-trend.
