Uni-Trend UT20B Spezifikationen

Page3456910101111131516171921TitleOverviewUnpacking InspectionSafety InformationRules For Safe OperationInternational Electrical SymbolsRotary SwitchD

Below table indicated for information about the rotary switch positions.Rotary SwitchRotary Switch PositionOFFVAΩVFunctionTurn on or off the power.AC

Measurement Operation (1)A. AC Voltage MeasurementWarningTo avoid harms to you or damages to the Meter from electric shock, pleasedo not attempt to m

Measurement Operation (2)Notel If the value of voltage to be measured is unknown, use the maximum measurement position (300V) and reduce the ran

Measurement Operation (3)B. DC Current MeasurementWarningNever attempt an in-circuit current measurement where the open-circuit voltagebetween the ci

Measurement Operation (4)3. Break the current path to be tested. Connect the red test lead to the morepositive side of the break and the black test le

Measurement Operation (5)C. Square Wave OutputWarningTo avoid damages to the Meter, do not allow output terminals to reach higherthan 10V.To measure

Measurement Operation (6)D. Battery TestTo test the battery proceed as follows:1. Set the rotary switch to the 1.5V or 9V measurement position in ra

E. Diodes TestWarningTo avoid damages to the Meter or to the devices under test, disconnect circuitpower and discharge all the high-voltage capacitors

2. For forward voltage drop readings on any semiconductor component, place thered test lead on the component’s anode and place the black test lead on

F. Measuring ResistanceWarningTo avoid damages to the Meter or to the devices under test, disconnect circuitpower and discharge all the high-voltage

Page23242425252626272728283031Table of Contents (2)TitleGeneral SpecificationsAccuracy SpecificationsA. AC VoltageB. DC CurrentC. Square Wave OutputD.

Notel If the value of resistance to be measured is unknown, use the maximummeasurement position (2000kΩ) and reduce the range step by step until asati

l The LCD displays " " indicating open-circuit for the tested resistor or the resistorvalue is higher than the maximum range of the Meter.

2. Connect the test leads across with the object being measured.The measured value shows on the display.Notel If the value of voltage to be measured i

l Maximum Voltage between anyTerminals and GroundinglFused Protection Input Terminall Maximum Displayl Measurement Speedl Temperaturel Relative Humidi

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

Accuracy Specifications (2)C. Square Wave OutputRangeRemarkOutput approx. at 50Hz square wave. As a simple signalsource with 47kΩ resistance output.B

Accuracy Specifications (3)E. Diodes TestD. Battery TestRange1.5V9VInternal Resistance30Ω1.8kΩOverload ProtectionMaximum current: 50mA.Maximum curre

Accuracy Specifications (4)G. DC VoltageRange200mV2000mV20V200V300VResolution0.1mV1mV10mV100mV1VOverload Protection300V DC or AC rmsAccuracy(1.5%+2)(

Maintenance (1)This section provides basic maintenance information including battery and fusereplacement instruction.WarningDo not attempt to repair o

l Turn the Meter to OFF position when it is not in use and take out the batterywhen not using for a long time.l Do not store the Meter in a place of h

This Operation Manual covers information on safety and cautions. Please read therelevant information carefully and observe all the Warnings and Notes

Maintenance (3)B. Replacing the BatteryWarningTo avoid false readings, which could lead to possible electric shock or personalinjury, replace the batt

Maintenance (4)C. Replacing the FusesWarningTo avoid electrical shock or arc blast, or personal injury or damage to theMeter, use specified fuses ONLY

Maintenance (5)~ END ~This operating manual is subject to change without notice.5. Rejoin the case bottom and case top,and reinstall the screw .Replac

33Model UT20B: OPERATING MANUAL

Manufacturer: UNI-TREND TECHNOLOGY(DONG GUAN)LIMITEDAddress: Dong Fang Da Dao, Bei Shan Dong Fang Industrial Development District, Hu Me

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

This Meter complies with the standards IEC61010: in pollution degree 2, overvoltagecategory (CAT. II 300V) and double insulation.CAT. II: Local level,

WarningTo avoid possible electric shock or personal injury, and to avoid possibledamage to the Meter or to the equipment under test, adhere to the fol

Rules For Safe Operation (2)l When the Meter working at an effective voltage over 60V in DC or 30V rmsin AC, special care should be taken for there is

Rules For Safe Operation (3)electrical specifications replacement parts.l The internal circuit of the Meter shall not be altered at will to avoid dama

International Electrical SymbolsAC (Alternating Current)DC (Direct Current)Grounding.Double Insulated.Deficiency of Built-In Battery.Diode.Fuse.Warnin