UNI-T UT39C Spécifications

Page34571011121313151720222527TitleOverviewUnpacking InspectionSafety InformationRules For Safe OperationInternational Electrical SymbolsThe Meter str

International Electrical SymbolsContinuity TestAC CurrentDC Current Double Insulated.Low Battery.Diode.Fuse.Safety RulesConforms to Standards of Eur

The Meter Structure (figure 1)1) LCD Display2) HOLD Button3) Display Backlight Button4) Rotary Switch5) COM Input Terminal6) 10

Functional ButtonsBelow table indicated for information about the functional button operations.Button Operation PerformedHOLD buttonl

Measurement Operation(1)A. DC Voltage Measurement (see figure 2)WarningTo avoid harms to you or damages to the Meter from electric shock, please dono

Measurement Operation (2)Notel If the value of voltage to be measured is unknown, use the maximum measurement position (500V) and reduce the ran

Measurement Operation (3)B. AC Voltage Measurement (see figure 2)WarningTo avoid harms to you or damages to the Meter from electric shock, please d

Measurement Operation (4)Notel If the value of voltage to be measured is unknown, use the maximum measurement position (500V) and reduce the ran

Measurement Operation (5)C. DC Current Measurement (see figure 3)Never attempt an in-circuit currentmeasurement where the voltage betweenterminals a

The Model UT33B: the current measurement has 3 measurement positionson the rotary switch: 200µA, 200mA and 10A.The Model UT33C/UT33D: the current meas

Notel If the value of current to be measured is unknown, use the maximum measurement position (10A)l and reduce the range step by step until a sa

Table of Contents (2)Title H. Square Wave OutputGeneral SpecificationsAccuracy SpecificationsA. DC VoltageB. AC CurrentC. DC CurrentD. Resis

Measurement Operation (8)D. Measuring Resistance (see figure 4)( figure 4)WarningTo avoid damages to the Meter or to thedevices under test, disconnec

1. Insert the red test lead into the VΩmA terminal and the black test lead into the COM terminal.2. Set the rotary switch to an appropriat

between the testing leads and the circuit under test.Measurement Operation (10)E. Diodes and Continuity Measurement (see figure 5)( figure 5)Testin

across the junction. A good silicon junctiondrops between 0.5V and 0.8V.To test a diode out of a circuit, connect the Meter as follows:1. Insert t

l Connect the test leads to the proper terminals as said above to avoid error display. The LCD will display “1” indicating open-circuit for wron

l When continuity testing has been completed, disconnect the connection between the testing leads and the circuit under test.Measurement Operati

2. Set the rotary switch to oC or oF.3. Place the temperature probe to the object being measured.The measured value shows on the display.Notel T

Measurement Operation (15)G. The Model UT33B: Battery Test (see figure 7)To avoid harms to you or damages to the Meter,please do not attempt to in

Notel When battery testing has been completed, disconnect the connection between the testing leads and the circuit under test.Measurement Operati

l When square wave output testing has been completed, disconnect the connection between the testing leads and the circuit under test.General Spe

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

l Altitude:Operating: 2000 m.Storage: 10000 m.l Battery Type: One piece of 9V Battery NEDA 1604 or 6F22 or 006P.l Battery Deficiency: Display: .l

Accuracy: (a% reading + b digits), guarantee for 1 year.Operating temperature: 23oC 5oC.Relative humidity: <75%.Temperature coefficient: 0.1 x

B. AC VoltageAccuracy Specifications(2)Remarks:l Input impedance: approx. 5MΩ.l Displays effective value of sine wave (mean value response).l Frequ

Accuracy Specifications(3)C. DC CurrentRemark:l At 10A Range: For continuous measurement 10 seconds and interval not less than 15 minutes.

D. ResistanceAccuracy Specifications(4) Range Resolution200Ω2000Ω20kΩ200kΩ20MΩ200MΩ AccuracyUT33B UT33C UT33DOverloadProtect

E. Diodes and Continuity Measurement (Continuity test only for UT33C/UT33D)F. The Model UT33C: Temperature1Ω Buzzer beeps at &l

G. The Model UT33B: Battery TestAccuracy Specifications(6)Range Resolution Internal Resistance12

This section provides basic maintenance information including battery and fusereplacement instruction.Maintenance(1)A. General Servicel Periodically

l Do not store the Meter in a place of humidity, high temperature, explosive, inflammable and strong magnetic field.B. Replacing the Battery (

2. Turn the Meter to OFF position.3. Remove the screw from case bottom, and separate the case bottom from the case top.4. Remove the bat

Open 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 missing

3. Remove the screw from case bottom, and separate the case bottom from the case top.4. Remove the fuse by gently prying one end loose, an

41Model UT33B/C/D: OPERATING MANUAL

Copyright 2002 Uni-Trend Group Limited.All rights reserved.Manufacturer:Uni-Trend Technology (Dongguan) LimitedDong Fang Da DaoBei Shan Dong Fang Indu

Safety Information(1)Safety InformationThis Meter complies with the standards IEC61010: in pollution degree 2, overvoltagecategory (CAT I 600V, CAT II

Safety Information(2)In this manual, a Warning identifies conditions and actions that pose hazards to theuser, or may damage the Meter or the equipmen

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

prevent damage of the Meter.l When the Meter working at an effective voltage over 60V in DC or 42V rms in AC, special care should be take

l Remove test leads and temperature probe from the Meter and turn the Meter power off before opening the Meter case.l When servicing the Meter,