Specifications

ManualsBrandsUNI-T ManualsMultimeterUT60C

Digital Multimeter

Page <1> 20/09/10 V1.1

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Table of Contents

Title Page

Overview ------------------------------------------------------------------------------------------------------------------ 2

Unpacking Inspection -------------------------------------------------------------------------------------------------- 2

Safety Information ------------------------------------------------------------------------------------------------------ 3

Rules For Safe Operation ------------------------------------------------------------------------------------------- 3

International Electrical Symbols ----------------------------------------------------------------------------------- 4

The Meter Structure --------------------------------------------------------------------------------------------------- 5

Rotary Switch ----------------------------------------------------------------------------------------------------------- 6

Functional Buttons ----------------------------------------------------------------------------------------------------- 7

Display Symbols ------------------------------------------------------------------------------------------------------- 8

Measurement Ranges

A. Selecting a Measurement Range ----------------------------------------------------------------------------- 9

B. Manual Ranging and Autoranging ---------------------------------------------------------------------------- 9

Measurement Operation

A. DC Voltage Measurement -------------------------------------------------------------------------------------- 10

B. AC Voltage Measurement -------------------------------------------------------------------------------------- 11

C. Measuring Resistance ------------------------------------------------------------------------------------------ 12

D. Testing for Continuity ------------------------------------------------------------------------------------------ 13

E. Testing Diodes ---------------------------------------------------------------------------------------------------- 14

F. Capacitance Measurement ------------------------------------------------------------------------------------ 15

G. Frequency Measurement -------------------------------------------------------------------------------------- 16

H. Measuring Duty Cycle ------------------------------------------------------------------------------------------ 17

I. Temperature Measurement

(Model UT60C) -------------------------------------------------------------------------------------------------- 18

J. DC or AC Current Measurement ------------------------------------------------------------------------------ 18

Operation of Hold Mode ------------------------------------------------------------------------------------------- 20

The Use of Relative Value Mode ------------------------------------------------------------------------------- 20

The POWER Button --------------------------------------------------------------------------------------------------- 21

The BLUE Button ----------------------------------------------------------------------------------------------------- 21

Turning on the Display Backlight ------------------------------------------------------------------------------- 21

Sleep Mode (Model UT60C) --------------------------------------------------------------------------------------- 21

General Specifications ------------------------------------------------------------------------------------------- 21

Accuracy Specifications

A. DC Voltage ------------------------------------------------------------------------------------------------------- 22

B. AC Voltage -------------------------------------------------------------------------------------------------- ----- 22

C. Resistance ---------------------------------------------------------------------------------------------------- 22

D. Continuity Test -------------------------------------------------------------------------------------------------- 23

E. Diode Test ----------------------------------------------------------------------------------------------------- 23

F. Capacitance 23

G. Frequency & Duty Cycle -------------------------------------------------------------------------------------- 23

H. Temperature (Model UT60C) --------------------------------------------------------------------------------- 24

I. DC Current ------------------------------------------------------------------------------------------------------ 24

J. AC Current --------------------------------------------------------------------------------------------------------- 24

Maintenance

A. General Service -------------------------------------------------------------------------------------------------- 25

B. Testing the Fuses ------------------------------------------------------------------------------------------------ 25

C. Replacing the Battery ------------------------------------------------------------------------------------------ 26

D. Replacing the Fuses ------------------------------------------------------------------------------------------ 27

Summary of content (27 pages)

PAGE 1
Digital Multimeter Table of Contents Title Page Overview -----------------------------------------------------------------------------------------------------------------Unpacking Inspection -------------------------------------------------------------------------------------------------Safety Information -----------------------------------------------------------------------------------------------------Rules For Safe Operation -----------------------------------------------------------------------------
PAGE 2
Digital Multimeter Overview This Operating Manual covers information on safety and cautions. Please read the relevant information carefully and observe all the Warnings and Notes strictly. Warning To avoid electric shock or personal injury, read the “Safety Information” and “Rules for Safe Operation” carefully before using the Meter. Digital Multimeter Model UT60C (hereafter referred to as “the Meter”) has autorange and manual range options with maximum reading 3999.
PAGE 3
Digital Multimeter Safety Information This Meter complies with the standards IEC61010: in pollution degree 2, overvoltage category (CAT. III 1000V, CAT. IV 600V;)and double insulation. CAT. III: Distribution level, fixed installation, with smaller transient overvoltages than CAT. IV CAT IV: Primary supply level, overhead lines, cable systems etc. Use the Meter only as specified in this operating manual, otherwise the protection provided by the Meter may be impaired.
PAGE 4
Digital Multimeter • 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. With a low battery, the Meter might produce false readings that can lead to electric shock and personal injury. • Remove test lead, temperature probe, RS232C interface cable and test clip from the Meter and turn the Meter power off before opening the Meter case.
PAGE 5
Digital Multimeter The Meter Structure (see figure 1) 1. 2. 3. 4. LCD Display. Functional Buttons. Rotary Switch. HzV Input Terminal: Input for voltage, frequency/duty cycle, resistance, diode, continuity and capacitance measurements. 5. COM Input Terminal: Return terminal for all measurements. 6. : µAmA Input Terminal: Input for 0.1 µA to 400.0mA current measurements. Model UT60C µAmA°C Input Terminal: Input for 0.1 µA to 400.0mA current measurements and temperature testing. 7.
PAGE 6
Digital Multimeter Rotary Switch Below table indicated for information about the rotary switch positions. Rotary Switch Position Function DC voltage measurement range from 400.0mV to 1000V or AC voltage measurement range from 4.000V to 750.0V. Continuity test. Diode test. Resistance measurement range from 400.0Ω to 40.00MΩ. Capacity test range from 40.00nF to 100.0µF. Model UT60C Temperature in Celsius from -40°C to 1000°C. Hz Frequency measurement range from 10.00Hz to 10.00MHz.
PAGE 7
Digital Multimeter Functional Buttons (1) Below table indicated for information about the functional button operations. Button Measuring Function Power Any rotary switch position Operation Performed Turn the power on and off. Switches between AC and DC voltage; the Meter beeps. DC is default. : Switches between continuity and diode and resistance measurements; the Meter beeps. Resistance is default.
PAGE 8
Digital Multimeter Display Symbols (1) (see figure 2) Number Symbol 1 AC 2 TRMS The : Indicator for true rms value. 3 AUTO The Meter is in the auto range mode in which the Meter automatically selects the range with the best resolution. 4 RS232C 5 % Percent: Used for duty cycle measurements. 6 H Data hold is active. 7 Meaning Indicator for AC voltage or current. UT60C The displayed value is the mean value. : The displayed value is the true rms value. Data output.
PAGE 9
Digital Multimeter Display Symbols (1) (see figure 2) Number Symbol Meaning Ω, kΩ, MΩ Ω: Ohm. The unit of resistance. kΩ: kilohm. 1 x 103 or 1000 ohms. MΩ: Megaohm. 1 x 106 or 1,000,000 ohms. F, µF, nF F: Farad. The unit of capacitance. mF: Microfarad. 1 x 10-6 or 0.000001 nF: farads.z Nanofarad. 1 x 10-9 or 0.000000001 farads. Hz, kHz, MHz Hz: Hertz. The unit of frequency in cycles/second. kHz: Kilohertz. 1 x 103 or 1,000 hertz. MHz: Megahertz. 1 x 106 or1,000,000 hertz. 12 to 16 V, mV V: Volts.
PAGE 10
Digital Multimeter Measurement Ranges (2) • In the autorange mode, the Meter selects the best range for input signals. This allows you to switch test points without having to reset the range. • In the manual range mode, you may select the range. This allows you to override autorange and lock the Meter in a specific range. The Meter defaults to the autorange mode in measurement functions that have more than one range. When the Meter is in the autorange mode, AUTO is displayed.
PAGE 11
Digital Multimeter The DC Voltage ranges are: 400.0mV, 4.000V, 40.00V, 400.0V and 1000V. To measure DC voltage, connect the Meter as follows: Ω terminal and the black test lead into the COM terminal. 1. Insert the red test lead into the HzVΩ 2. Set the rotary switch to ; DC measurement is default or press BLUE button to select DC measurement mode. 3. Connect the test leads across with the object being measured. The measured value shows on the display.
PAGE 12
Digital Multimeter Note • Ω This loading effect can cause measurement errors in high impedance In each range, the Meter has an input impedance of 10MΩ Ω, the error is negligible (0.1% or less). circuits. If the circuit impedance is less than or equal to 10kΩ • When AC voltage measurement has been completed, 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.
PAGE 13
Digital Multimeter Note • Ω to 0.2Ω Ω of error to resistance measurement. To obtain precision readings in low-resistance The test leads can add 0.1Ω Ω, short-circuit the input terminals beforehand, using the relative measurement measurement, that is the range of 400.0Ω ∆ to automatically subtract the value measured when the testing leads are short-circuited from the reading.
PAGE 14
Digital Multimeter Ω. 3. The buzzer sounds if the resistance of a circuit under test is less than around 70Ω Note The LCD displays indicating the circuit being tested is open. Measurement Operation (5) • 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 terminals of the Meter. E.
PAGE 15
Digital Multimeter 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 • In a circuit, a good diode should still produce a forward Measurement Operation (6) Voltage drop reading of 0.5V to 0.8V; however, the reverse voltage drop reading can vary depending on the resistance of other pathways between the probe tips.
PAGE 16
Digital Multimeter Measurement Operation (7) anode & black clip to cathode instead of using test leads as mentioned above. To minimize the effect of capacitance stored in the test leads, the test lead should be as short as possible. To measure a small value of capacitance, use REL mode to remove the leads capacitance. Remaining voltage, insulated impedance, & dielectric absorption from the capacitor may cause the measurement error.
PAGE 17
Digital Multimeter Measurement Operation (8) • To obtain a stable reading when measuring input scope > 30V rms frequency signal: Set the rotary switch to Then press Hz% to select Hz measurement mode to obtain frequency value. When input scope ≤ 30V rms, please follow the above step 2. carrying out the measurement. • When making frequency measurement at voltage or current range, please mind the following signal requirement table: Range Signal Requirement Frequency Range ≥1.0V 5Hz to 10kHz 40V ≥5.
PAGE 18
Digital Multimeter Measurement Operation (9) I. Model UT60C Temperature Measurement (see figure 10) The temperature measurement range is -40°C to 100°C to measure temperature, connect the Meter as follows: µA°C terminal and the black temperature probe into the COM terminal. 1. Insert the red temperature probe into the µAµ 2. Set the rotary switch to °C. 3. Place the temperature probe to the object being measured. The measured value shows on the display.
PAGE 19
Digital Multimeter Warning Never attempt an in-circuit current measurement where the open-circuit voltage between the circuit and ground is greater than 250V. 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.
PAGE 20
Digital Multimeter 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. The Hold mode is applicable to all measurement functions. • • • Press HOLD to enter Hold mode; the Meter beeps. Press HOLD again or RANGE or Hz % or turn the rotary switch to exit Hold mode; the Meter beeps. In Hold mode, isdisplayed.
PAGE 21
Digital Multimeter The POWER button This is a self-lock switch use to turn on or off the power of the Meter. The BLUE button It uses for selecting the required measurement function when there is more than one function at one position of the rotary switch. Turning on the Display Backlight Warning In order to avoid the hazard arising from mistaken readings in insufficient light or poor vision, please use Display Backlight function. • Press and hold HOLD for over 2 seconds to turn the Display Backlight on.
PAGE 22
Digital Multimeter Accuracy Specifications (1) Accuracy Operating temperature Relative humidity Temperature coefficient :± (a% reading + b digits), guarantee for 1 year. : 23°C ±5°C. : <75%. : 0.1 x (specified accuracy)/1°C. A. DC Voltage Range Resolution Accuracy 400mV 0.1mV ±(0.8%+3) 4V 1mV 40V 10mV 400V 100mV 1000V 1V ±(1%+3) Range Resolution Accuracy Overload Protection 4V 1mV 40V 10mV ±(1%+5) 400V 100mV 1000V dc 750V ac rms Continuous. 750V 1V ±(0.
PAGE 23
Digital Multimeter Accuracy Specifications (2) D Continuity Test Range Resolution Accuracy Overload Protection 400.0Ω 0.1Ω Approximate ≤100Ω 1000Vp Range Resolution Overload Protection Diode 1mV 100Vp Remarks: • Buzzer beeps continuously. • Open circuit voltage approximate 0.45V. E. Diode Test Remarks: • Open circuit voltage approximate 1.48V. • Displays approximate forward voltage drop reading 0.5V to 0.8V. F.
PAGE 24
Digital Multimeter Accuracy Specifications (3) H. Temperature (Model UT60C) Range Resolution -40°C to 1000°C 1°C Accuracy -40°C to 0°C ±(3% + 4) 0°C to 400°C ±(1% + 3) 400°C to 1000°C ±(2% + 10) Accuracy Overload Protection Overload Protection: Glass fuse 0.5A, 250V, fast type, 5 x 20mm. I. DC Current Range Resolution 400µA 0.1µA 4000µA 1µA 40mA 0.01mA 400mA 0.1mA 4A 0.001A ±(1% + 2) ±(1.2% + 3) ±(1.5% + 5) 10A 0.01A 0.
PAGE 25
Digital Multimeter 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. To avoid electrical shock or damage to the Meter, do not get water inside the case. A. • • • • • General Service Periodically wipe the case with a damp cloth and mild detergent.
PAGE 26
Digital Multimeter C. Replacing the Battery (see figure 12) Warning To avoid false readings, which could lead to possible electric shock or personal injury, replace the battery as soon as the battery indicator appears. Make sure the test leads are disconnected from the circuit being tested before opening the case bottom. To replace the battery: 1. 2. 3. 4. 5. Press the POWER to turn the Meter off and remove all connections from the terminals.
PAGE 27
Digital Multimeter D. Replacing the Fuses(see figure 13) Warning To avoid electrical shock or arc blast, or personal injury or damage to the Meter, use specified fuses ONLY in accordance with the following procedure. To replace the Meter’s fuse: 1. 2. 3. 4. 5. Press the POWER to turn the Meter off and remove all connections from the terminals. Remove the screw from the battery compartment, and separate the battery compartment from the case bottom.