UNI-T UT33A Spécifications

1Model UT33A: OPERATING MANUALPage3457101112131414151719 212326TitleOverviewUnpacking InspectionSafety InformationRules For Safe OperationInternationa

10Model UT33A: OPERATING MANUALInternational Electrical SymbolsContinuity TestAC CurrentDC Current Double Insulated.Deficiency of Built-In BatteryD

11Model UT33A: OPERATING MANUALThe Meter Structure (figure 1)1) LCD Display2) SELECT Button3) Rotary Switch4) COM Input Terminal5) 10A

12Model UT33A: OPERATING MANUALFunctional ButtonsSELECT buttonSelecting for DC and AC current measurement, Continuity Test and Diode Test. Thebuzzer s

13Model UT33A: OPERATING MANUALLCD Display (see figure 2)LCD Display(figure 2)

14Model UT33A: OPERATING MANUALMeasurement Operation (1)WarningTo avoid harms to you or damages to the Meterfrom electric shock, please do not attempt

15Model UT33A: OPERATING MANUALMeasurement Operation (2)l DCV Measurement is autoranging, the Meter has an input impedance of approx. 10MΩ. This

16Model UT33A: OPERATING MANUALMeasurement Operation (3)2. Set the rotary switch to V range.3. Connect the test leads across with the object be

C. DC Current Measurement (see figure 4)WarningNever attempt an in-circuit current measurementwhere the voltage between terminals and groundis greate

Measurement Operation (5)2. Insert the red test lead into the VΩmA or 10A terminal and the black test lead into the COM terminal.3. Set the rota

Measurement Operation (6)19Model UT33A: OPERATING MANUALD. AC Current Measurement (see figure 4)WarningNever attempt an in-circuit current measurement

2Model UT33A: OPERATING MANUALTable of Contents (2)TitleSleep ModeGeneral SpecificationsAccuracy SpecificationsA. DC VoltageB. AC VoltageC. DC Current

Measurement Operation (7)20Model UT33A: OPERATING MANUAL5. Break the current path to be tested. Connect the red test lead to the more positive si

Measurement Operation (8) (figure 5)black red21Model UT33A: OPERATING MANUALE. Resistance Measurement (see figure 5)WarningTo avoid damages to the M

Measurement Operation (9)22Model UT33A: OPERATING MANUALNotel The test leads can add 0.1Ω to 0.3Ω of error to resistance measurement. To obtain

Measurement Operation (10) (figure 6)23Model UT33A: OPERATING MANUALF. Diode and Continuity Test (see figure 6)Testing DiodesWarningTo avoid damages t

Measurement Operation (11)24Model UT33A: OPERATING MANUALTo test a diode out of a circuit, connect the Meter as follows:1. Insert the red test lead i

Measurement Operation (12)25Model UT33A: OPERATING MANUALl When diode testing has been completed, disconnect the connection between the testing l

Measurement Operation (13) (figure 7)26Model UT33A: OPERATING MANUALG. Transistor hFE Measurement (see figure 7)WarningTo avoid damages to the Meter o

27Model UT33A: OPERATING MANUALTo preserve battery life, the Meter automatically turns off if you do not turn the rotaryswitch or press any button for

28Model UT33A: OPERATING MANUALl Maximum Voltage between any Terminals and Grounding: 500V rms.l Fused Protection for VΩmA Input Terminal: 500mA, 250V

29Model UT33A: OPERATING MANUALGeneral Specifications(2)l Battery Type: Two piece of 1.5V AAA Battery.l Battery Deficiency: Display: .l Negative re

3OverviewThis Operating Manual covers information on safety and cautions. Please readthe relevant information carefully and observe all the Warnings a

Accuracy Specifications(1)30Model UT33A: OPERATING MANUALA. DC VoltageRemark: Input impedance: 10MΩ.100µV1mV10mV100mV1VAccuracy: (a% reading + b dig

Accuracy Specifications(2)31Model UT33A: OPERATING MANUAL Range Resolution4V40V400V500VAccuracyOverload Protection(1.2%+3)500V DC or AC1mV10m

Accuracy Specifications(3)32Model UT33A: OPERATING MANUALC. DC CurrentRemark:l At 10A Range: For continuous measurement 10 seconds and interval not le

Accuracy Specifications(4)33Model UT33A: OPERATING MANUAL Range Resolution400µA4000µA40mA400mA4A10AAccuracyOverload Protection(1.5%+5)500mA/2

Accuracy Specifications(5)34Model UT33A: OPERATING MANUALE. Resistance Range Resolution400Ω4kΩ40kΩ400kΩ4MΩ40MΩAccuracyOverload Protection(1.2

Accuracy Specifications(6) Range Resolution RemarkOverload Protection Range RemarkTesting Condition35Model UT33A:

36Model UT33A: OPERATING MANUALMaintenance(1)This section provides basic maintenance information including battery and fusereplacement instruction.War

37Model UT33A: OPERATING MANUALMaintenance(3)B. Replacing the Battery (see figure 8)WarningTo avoid false readings, which could lead topossible electr

38Model UT33A: OPERATING MANUALC. Replacing the Fuses (see figure 8)WarningTo avoid electrical shock or arc blast, or personal injury or damage to the

39Model UT33A: OPERATING MANUAL4. Remove the fuse by gently prying one end loose, and then take out the fuse from its bracket.6. Rejoin the c

4Open the package case and take out the Meter. Check the following items carefullyto see any missing or damaged part:In the event you find any missin

Replacement of the fuses is seldom required. Burning of a fuse always results fromimproper operation.** END **40Model UT33A: OPERATING MANUAL

41Model UT33A: OPERATING MANUAL

This operating manual is subject to change without notice.Copyright 2003 Uni-Trend International Limited.All rights reserved.Manufacturer:Uni-Trend In

5Model UT33A: OPERATING MANUALSafety Information(1)Safety InformationThis Meter complies with the standards IEC61010: in pollution degree 2, overvolta

6Model UT33A: OPERATING MANUALSafety Information(2)In this manual, a Warning identifies conditions and actions that pose hazards to theuser, or may da

7Model UT33A: OPERATING MANUALWarningTo avoid possible electric shock or personal injury, and to avoid possibledamage to the Meter or to the equipment

8Model UT33A: OPERATING MANUALl When the Meter is working at an effective voltage over 60V in DC or 42V rms in AC, special care should be taken f

9Model UT33A: OPERATING MANUALl Remove test leads from the Meter and turn the Meter power off before opening the Meter case.l When servicing the