Extech Instruments EX650 User Manual

EX65x‐en‐GB_V1.67/16
21
ResistanceMeasurementNotes:
 Thedisplaywillshow“OL”whenanopencircuitisdetectedoriftheresistance>maximum
range.
 Thetestleadsintroduceanerrorofapprox.0.1Ω～0.2Ωforlowresistancemeasurements.
UsetheRelativemodetoobtainaccuratereadings.Shortthetestleadstogether,pressthe
RELbutton,andthenmeasurealowresistance.Themetersubtractstheshort‐circuitvalue
fromthereading.
 Ifthetestleadresistanceofprobeis>0.5Ωwhenshorted,inspectthetestleadsandthe
connection.
 Itmaytakeseveralsecondsforthereadingtostabilizewhenmeasuring
resistance>1MΩ.
Thisisnormaloperation.
 Forpersonalsafety,donotmeasureacircuitwithvoltages>30VDCorAC.


Extech Instruments EX650 Specifications

General

Brand	Extech Instruments
Model	EX650
Category	Measuring Instruments
Language	English