UNI-T UT90B Specifikace

Table of ContentsTitle PageOverviewUnpacking InspectionSafety InformationRules For Safe OperationInternational

10Rotary SwitchBelow table indicated for information about the rotaryswitch positions.µµModel UT90B: OPERATING MANUAL

11Functional ButtonsBelow table indicated for information about the functionalbutton operations.AC voltage measurement.Turn the power o

12Display Symbols(1) (see figure 2)( figure 2)No. Symbol Meaning1The battery is low. Warning: To avoid false readings,which

Display Symbols(2) (see figure 2)Ω: Ohm. The unit of resistance.kΩ: kilohm.1 x 103 or 1000 ohms.MΩ: Megaohm. 1 x 106 or 1,000,000 ohms.µA,

14Measurement Operation(1)A.DC & AC Voltage Measurement (see figure 3)red black( figure 3)WarningTo avoid harms to you or damages to the Meter

15Measurement Operation(2)1. Insert the red test lead into the VΩ terminal and the black test lead into the COM terminal.2. Set the rotar

16Measurement Operation(3)WarningNever attempt an in-circuit current measurementwhere the open-circuit voltage between the circuitand ground is greate

17Measurement Operation(4)WarningTo avoid possible damage to the Meter and to thedevice under test, disconnect circuit power anddischarge all high-vol

Table of ContentsTitle PageOverviewUnpacking InspectionSafety InformationRules For Safe OperationInternational

20Measurement Operation(7)D.Resistance Measurement (see figure7)WarningTo avoid damages to the Meter or to the devices undertest, disconnect circuit p

21Measurement Operation(8)Model UT90B: OPERATING MANUAL

25General Specifications(2)l Safety/Compliances : IEC61010: CAT. II 1000V, CAT. III 600V overvoltage

26Accuracy: (a% reading + b digits),guarantee for 1 year.Operating temperature:23oC~5oC.Relative humidity:<75%.Temperature coefficient: 0.1 x (spe

28E. Diodes & Continuity Test1mV1ΩRange Resolution Overload Protection230V rmsAccuracy Specification(3)F. ResistanceRange ResolutionO

29Maintenance(1)This section provides basic maintenance informationincluding battery and fuse replacement instruction.WarningDo not attempt to repair

OverviewThis Operating Manual covers information on safety andcautions. Please read the relevant information carefullyand observe all the Warnings and

30Maintenance(2)WarningTo avoid electrical shock or arc blast, or personalinjury or damage to the Meter, use specified fusesONLY in accordance with th

31Model UT90B: OPERATING MANUAL

32Copyright 2001 Uni-Trend International Limited.All rights reserved.Manufacturer: UNI-TREND TECHNOLOGY(DONG GUAN)LIMITEDAddress: Dong Fang Da Dao, Be

Unpacking InspectionOpen the package case and take out the Meter. Checkthe following items carefully to see any missing ordamaged part:In the event y

Safety InformationThis Meter complies with standards IEC61010: in pollutiondegree 2, overvoltage category (CAT. II 1000V, CAT. III600V) and double ins

Rules For Safe Operation (1)WarningTo avoid possible electric shock or personal injury,and to avoid possible damage to the Meter or to theequipment un

Rules For Safe Operation (2)l When servicing the Meter, use only the same model number or identical electrical specifications replacement p

International Electrical SymbolsAC (Alternating Current).DC (Direct Current).Grounding.Double Insulated.Deficiency of Power.FuseWarning. Refer to the

The Meter Structure (see figure 1)9( figure 1)1 LCD Display.2 Solar Panel.3 Impedance Changeover Button.4 Rotary Switch.5 Input Terminals.6