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UNI-T UT10A, Operating Manual

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Table of Contents (2)

Title

                                                            Page

Sleep Mode
General Specifications
Accuracy Specifications
    A. DC Voltage
    B. AC Voltage
    C. Resistance Test
    D. Frequency
    E. Duty Cycle
    F. Diodes and Continuity Test
    G. Capacitance
Maintenance
    A. General Service
    B. Replacing the Battery

25
26
27
28
29
30
31
32
32
33
34
35
36

2

Model UT10A: OPERATING MANUAL

Summary of Contents for UT10A

Page 1: ...ternational Electrical Symbols The Meter Structure Functional Buttons Measurement Operation A DC Voltage Measurement B AC Voltage Measurement C Measuring Resistance D Frequency and Duty Cycle Measurement E Measuring Diodes Continuity F Capacitance Measurement 3 4 5 6 9 10 11 12 13 15 16 19 20 23 1 Model UT10A OPERATING MANUAL ...

Page 2: ...ons Accuracy Specifications A DC Voltage B AC Voltage C Resistance Test D Frequency E Duty Cycle F Diodes and Continuity Test G Capacitance Maintenance A General Service B Replacing the Battery 25 26 27 28 29 30 31 32 32 33 34 35 36 2 Model UT10A OPERATING MANUAL ...

Page 3: ...gits with steady operations fashionable structure low power consumption and highly reliable hand held measuring instrument The Meter uses large scale of integrated circuit with double integrated A D converter as its core The Meter not only can measure AC DC Voltage AC DC Current Resistance Capacitance Frequency Diodes and Continuity but also has Relative Mode Data Hold Full Icon Display Duty Cycle...

Page 4: ... items carefully to see any missing or damaged part Item 1 2 3 4 Description English Operating Manual Built In Test Lead Vinyl Holder 3V Button Battery CR2032 Qty 1 piece 1 pair 1 piece 1 piece In the event you find any missing or damage please contact your dealer immediately 4 Model UT10A OPERATING MANUAL ...

Page 5: ... III Use the Meter only as specified in this operating manual otherwise the protection provided by the Meter may be impaired In this manual a Warning identifies conditions and actions that pose hazards to the user or may damage the Meter or the equipment under test A Note identifies the information that user should pay attention on International electrical symbols used on the Meter and in this Ope...

Page 6: ...r the case or part of the case is removed Look for cracks or missing plastic Pay attention to the insulation around the connectors Inspect the test leads for damaged insulation or exposed metal Check the test leads for continuity Do not apply more than the rated voltage as marked on the Meter between the terminals or between any terminal and grounding The rotary switch should be placed in the righ...

Page 7: ...etic field The performance of the Meter may deteriorate after dampened 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 or capacitance Replace the battery as soon as the battery indicator appears With a low battery the Meter might produce false readings that can lead t...

Page 8: ...n the surface of the Meter when servicing No abrasive and solvent should be used to prevent the surface of the Meter from corrosion damage and accident The Meter is suitable for indoor use Turn the Meter power off when it is not in use and take out the battery when not using for a long time Constantly check the battery as it may leak when it has been using for some time replace the battery as soon...

Page 9: ...al Symbols Deficiency of Built In Battery AC Alternating Current Capacitance Double Insulated Warning Refer to the Operating Manual Conforms to Standards of European Union Grounding DC Direct Current Diode Continuity Test Fuse 9 Model UT10A OPERATING MANUAL ...

Page 10: ... Meter Structure see figure 1 1 LCD Display 2 SELECT Button 3 RELATIVE Mode Button 4 DATA HOLD Button 5 Hz DUTY Button 6 Rotary Switch 7 Black Test Lead 8 Red Test Lead figure 1 1 2 3 4 5 6 8 7 10 Model UT10A OPERATING MANUAL ...

Page 11: ...d mode Press HOLD again to exit hold mode In Hold mode is displayed and the present value is shown Press Hz DUTY at DCV to step through DCV frequency and duty cycle measurement mode on the LCD will be disappeared Press Hz DUTY at ACV to step through ACV frequency and duty cycle measurement mode on the LCD will be disappeared The Meter will be at DCV 400mV or ACV 4V after stepping through frequency...

Page 12: ... 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 Pay extra attention to the symbol which is located besides the input terminals of the Meter before carrying out measeurement 12 Model UT10A OPERATING MANUAL l l l ...

Page 13: ...Measurement Operation 2 A DC Voltage Measurement see figure 2 figure 2 Red Black 13 Model UT10A OPERATING MANUAL ...

Page 14: ...measured with red test lead to the positive and black test lead to the negative The measured value shows on the display Note The LCD displays the negative reading when the test lead connection is reversed When DC voltage measurement has been completed disconnect the connection between the testing leads and the circuit under test 14 Model UT10A OPERATING MANUAL l l 3 ...

Page 15: ... when measuring high voltage To measure AC Voltage connect the Meter as follows 1 Set the rotary switch to ACV range 2 Connect the test leads across with the object being measured The measured value shows on the display Note The LCD displays the negative reading when the test lead connection is reversed When AC voltage measurement has been completed disconnect the connection between the testing le...

Page 16: ...Measurement Operation 5 C Measuring Resistance see figure 3 figure 3 Red Black Hz Duty 16 Model UT10A OPERATING MANUAL ...

Page 17: ...n precision readings in low resistance that is the range of 400Ω short circuit the red and black test leads beforehand and record the reading obtained called this reading as X Then use the equation measured resistance value Y X precision readings of resistance 17 Model UT10A OPERATING MANUAL To measure resistance connect the Meter as follows 1 Set the rotary switch to range 2 Connect the test lead...

Page 18: ... reading When there is no input for example in open circuit condition the Meter displays OL When resistance measurement has been completed disconnect the connection between the testing leads and the circuit under test Measurement Operation 7 18 Model UT10A OPERATING MANUAL l l l ...

Page 19: ... resolution is based on the sine wave Note When Hz or Duty Cycle measurement has been completed disconnect the connection between the testing leads and the circuit under test Measurement Operation 8 19 Model UT10A OPERATING MANUAL To measure frequency and duty cycle connect the Meter as follows 1 Set the rotary switch to ACV or DCV range 2 Press Hz DUTY button select Frequency or Duty Cycle measur...

Page 20: ...DC or 30V rms in AC to avoid personal dangerous Measurement Operation 9 20 Model UT10A OPERATING MANUAL Testing Diodes Use the diode test to check diodes transistors and other semiconductor devices The diode test sends a current through the semiconductor junction and then measures the voltage drop across the junction A good silicon junction drops between 0 5V and 0 8V To test out a diode out of a ...

Page 21: ...nection The unit of diode is Volt V displaying the positive connection voltage drop value When diode testing has been completed disconnect the connection between the testing leads and the circuit under test Measurement Operation 10 21 Model UT10A OPERATING MANUAL 2 Press SELECT button to select diode test 3 For forward voltage drop readings on any semiconductor component place the red test lead on...

Page 22: ...ting for Continuity To test for continuity connect the Meter as below 1 Set the rotary switch to Ω range 2 Press SELECT button to select continuity test 3 Connect the test leads across with the object being measured The buzzer sounds continuously if the resistance of a circuit under test is around less than 70Ω The LCD displays the resistance value of a circuit under test simultaneous l ...

Page 23: ...tor is discharged Never attempt to input over 60V in DC or 30V rms in AC to avoid personal dangerous To measure capacitance connect the Meter as follows 1 Set the rotary switch to Ω range 2 Press SELECT button to select capacitance test 3 Capacitance range open circuit has display value please select relative measuremnet mode by pressing RELATIVE button once 4 Connect the test leads across with th...

Page 24: ...o cathode For measuring capacitance higher than 10µF it is normal taking several seconds to obtain a reading When capacitance measurement has been completed disconnect the connection between the testing leads and the circuit under test Measurement Operation 13 24 Model UT10A OPERATING MANUAL l l l ...

Page 25: ...r automatically turns off if you do not turn the rotary switch or press any button for around 15 minutes The Meter can be activated by pressing any functional buttons or turning the rotary switch When the Meter is activated by pressing SELECT button the Sleep Mode feature will be disabled ...

Page 26: ...re 100 C 500 C 140 F 1220 F Altitude Operating 2000m Storage 10000m Battery Type 3V button battery CR2032 Battery Deficiency At around 2 4 VDisplay Data Holding Display Negative reading Display Overloading Display OL Dimensions HxWxL 108x58x12mm Weight Approx 125g battery and test lead included Safety Compliances IEC61010 CAT II 300V overvoltage and double insulation standard Certificate General S...

Page 27: ...ions 1 Accuracy Specifications 27 Model UT10A OPERATING MANUAL Accuracy a reading b digits guarantee for 1 year Operating temperature 230 C 50 C Relative humidity 75 Temperature coefficient 0 1 x specified accuracy 1 0 C ...

Page 28: ...Voltage Range Resolution Accuracy Overload Protection Remarks Input Impedance 10MΩ 400mV 4V 40V 300V 0 1mV 1mV 10mV 100mV 0 8 3 0 8 1 300V DC 300V AC Accuracy Specifications 2 28 Model UT10A OPERATING MANUAL ...

Page 29: ...on Remarks Input Impedance 10MΩ Frequency response 40Hz 400Hz Display effective value of sine wave mean value response 4V 40V 300V 1mV 10mV 100mV 1 2 3 300V DC 300V AC B AC Voltage Accuracy Specifications 3 29 Model UT10A OPERATING MANUAL l l l ...

Page 30: ...cy Overload Protection Remarks Open circuit voltage approx 0 45V 400Ω 4kΩ 40kΩ 400kΩ 4MΩ 40MΩ 0 1Ω 1Ω 10Ω 100Ω 1kΩ 10kΩ 1 2 2 1 2 250V AC C Resistance Test 1 2 2 1 5 2 Accuracy Specifications 4 30 Model UT10A OPERATING MANUAL ...

Page 31: ...n Remarks The inputted voltage is sine wave When 10Hz 10kHz 1V rms When 10kHz 100kHz 30V rms 99 99Hz 999 9Hz 9 999kHz 99 99kHz 0 01Hz 0 1Hz 0 001kHz 0 01kHz 0 5 3 250V AC D Frequency Accuracy Specifications 5 31 Model UT10A OPERATING MANUAL l l l ...

Page 32: ... reference 0 1 99 9 0 1 250V AC E Duty Cycle F Diodes and Continuity Test Range Resolution Input Protection Remarks Open circuit voltage approx 1 5V Diode Continuity Buzzer 250V AC Function Open circuit voltage approx 0 45V f 2 7kHz Approx 70Ω buzzer beeps continuously 1mV 0 1Ω Accuracy Specifications 6 32 Model UT10A OPERATING MANUAL l l l l ...

Page 33: ...nF 4µF 40µF 200µF 0 001nF 0 01nF 0 1nF 0 001µF 0 01µF 0 1µF 4 3 250V AC G Capacitance 5 10 Open circuit voltage around 0 45V Measuring under Relative mode When the tested capacitor is greater than 100µF the reading is only for reference Accuracy Specifications 7 33 Model UT10A OPERATING MANUAL l l ...

Page 34: ...ied 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 34 Model UT10A OPERATING MANUAL This section provides basic maintenance information including battery and fuse replacement instruction ...

Page 35: ...minals with cotton bar with detergent as dirt or moisture in the terminals can affect readings Turn the Meter OFF when it is not in use and take out the battery when not using for a long time Do not store the Meter in place of humidity high temperature explosive inflammable and strong magnetic field 35 Model UT10A OPERATING MANUAL l l l l ...

Page 36: ...Maintenance 3 B Replacing the Battery see figure 4 figure 4 SCREW 36 Model UT10A OPERATING MANUAL ...

Page 37: ...ct the connection between the testing leads and the circuit under test 2 Turn the Meter OFF 3 Remove the screw from the case bottom separate the case bottom from the case top 4 Remove the battery and replace with a new 3V Button Battery CR2032 5 Rejoin the case bottom and the case top and install the screw END This operating manual is subject to change without notice 37 Model UT10A OPERATING MANUA...

Page 38: ...o 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 com 38 Model UT10A OPERATING MANUAL C ...

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