AEMC instruments 1035 User manual

DIGITAL ANALOG
MEGOHMMETERS
1035
1039
ENGLISH User Manual
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Statement of Compliance
Chauvin Arnoux®, Inc. d.b.a. AEMC®Instruments
certifies that this instrument has been calibrated
using standards and instruments traceable to
international standards.
We guarantee that at the time of shipping your
instrument has met its published specifications.
An NIST traceable certificate may be
requested at the time of purchase, or obtained
by returning the instrument to our repair and
calibration facility, for a nominal charge.
The recommended calibration interval for this
instrument is 12 months and begins on the date of
receipt by the customer. For recalibration, please
use our calibration services. Refer to our repair
and calibration section at www.aemc.com.
Serial #: ________________________________
Catalog #: 2116.90 /2116.91
Model #: 1035 /1039
Please fill in the appropriate date as indicated:
Date Received: _________________________________
Date Calibration Due: _______________________
Chauvin Arnoux®, Inc.
d.b.a AEMC®Instruments
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Table of Contents
1. INTRODUCTION............................................................................... 3
1.1 International Electrical Symbols................................................4
1.2 DenitionofMeasurementCategories .....................................4
1.3 ReceivingYourShipment..........................................................4
1.4 OrderingInformation.................................................................5
1.4.1 AccessoriesandReplacementParts............................5
2. PRODUCT FEATURES ...................................................................... 6
2.1 Description................................................................................6
2.2 Model1035ControlFeatures ...................................................7
2.3 Model1039ControlFeatures ...................................................8
2.4 LCDDisplaySymbols ...............................................................9
2.4.1 DigitalDisplaySymbols ................................................9
2.4.2 AnalogBargraph...........................................................9
2.5 ButtonFunctions.....................................................................10
2.5.1 YellowPushButton .....................................................10
2.5.2 ALARMButton ............................................................10
2.5.3 CursorButton..............................................................10
2.5.4 ScrollCursorButton.................................................... 11
2.5.5 BacklightButton ...................................................11
2.5.6 RELButton...............................................................11
2.6 MeasurementFunctions .........................................................12
2.6.1 AC/DCVoltageMeasurement-SafetyCheck ............12
2.6.2 InsulationResistanceTesting .....................................12
2.6.3 Resistance ..................................................................13
2.6.4 Capacitance(1039) ....................................................13
2.6.5 AC/DCCurrent(1039) ................................................14
2.6.6 ACVoltage(1039) ......................................................14
2.7 SpecialFunctions ...................................................................15
2.7.1 BatteryLifeIndication .................................................15
2.7.2 Auto-Off.......................................................................15
2.7.3 BatteryAutoTest.........................................................15
2.7.4 Fuse(1039) ................................................................16
2.7.5 Buzzer.........................................................................16
2.7.6 AlarmSetpoints ..........................................................17
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2.7.7 RelativeMeasurements( REL).................................19
2.7.8 ProgrammingtheCapacitanceperUnitLength(1039)......19
3. SPECIFICATIONS........................................................................... 20
3.1 ElectricalSpecications ..........................................................20
3.1.1 Voltage........................................................................20
3.1.2 Insulation ....................................................................20
3.1.3 Resistance ..................................................................21
3.1.4 Capacitance(1039) ....................................................21
3.1.5 Distance(1039) ..........................................................22
3.1.6 AC/DCCurrent(1039) ................................................22
3.1.7 ACVoltage(1039) ......................................................22
3.1.8 PowerSupply..............................................................22
3.2 MechanicalSpecications ......................................................23
3.3 EnvironmentalConditions.......................................................23
3.4 SafetySpecications .........................................................24
4. OPERATION .................................................................................. 25
4.1 Operation ................................................................................25
4.2 AC/DCVoltageandInsulationMeasurement .........................25
4.3 ResistanceMeasurement .......................................................26
4.4 CapacitanceMeasurement(1039) .........................................26
4.5 AC/DCCurrentMeasurement(1039) .....................................26
4.6 ACVoltageMeasurement(1039) ...........................................27
4.7 ApplicationExamples .............................................................28
4.7.1 InsulationMeasurementsonInstallations...................28
4.7.2 InsulationMeasurementsonCables ..........................28
4.7.3 InsulationMeasurementsonMotors...........................29
5. MAINTENANCE ............................................................................. 30
5.1 BatteryReplacement ..............................................................30
5.2 FuseReplacement(1039) ......................................................30
5.3 Cleaning..................................................................................30
5.4 Storage ...................................................................................30
RepairandCalibration...........................................................................31
TechnicalandSalesAssistance ............................................................31
Limited Warranty ...................................................................................32
WarrantyRepairs...................................................................................32
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DigitalAnalogMegohmmeterModels1035/1039 3
CHAPTER 1
INTRODUCTION
Warning
Thesesafetywarningsareprovidedtoensurethesafetyofper-
sonnelandproperoperationoftheinstrument.
• Readtheinstructionmanualcompletelyandfollowallsafety
informationbeforeoperatingthisinstrument.
• Safetyistheresponsibilityoftheoperator!
• Tests are to be carried out only on non-energized circuits!
Check for live circuits before making resistance measure-
ments(safetycheck).
• The Megohmmeter Models 1035 and 1039 are sources of
highvoltage,asisthesampleconnectedtothem.Allpersons
performing or assisting in the tests must employ all safety
precautionstopreventelectricalshocktothemselvesandto
others.
• AEMC®considerstheuseofrubberglovestobeanexcellent
safety practice even if the equipment is properly operated
andcorrectlygrounded.
• Whentestingcapacitancesamples,makesurethattheyhave
been properly discharged and that they are safe to touch.
Dielectricinsulationsamplesshouldbeshort-circuitedforat
leastvetimestheamountoftimetheywereenergized.
• Megohmmetersshouldneverbeusedinanexplosiveenvi-
ronment.
• Usetheleadssuppliedwiththemegohmmeters.Iftheyare
defectiveorworn,replacebeforetesting.
• NEVER use the megohmmeters on electrical conductors
ratedabove600VinovervoltagecategoryIII(CATIII).
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4 DigitalAnalogMegohmmeterModels1035/1039
1.1 International Electrical Symbols
This symbol signifies that the instrument is protected by double or rein-
forced insulation.
This symbol on the instrument indicates a WARNING and that the operator
must refer to the user manual for instructions before operating the
instrument. In this manual, the symbol preceding instructions indicates that
if the instructions are not followed, bodily injury, installation/sample and
product damage may result.
Risk of electric shock. The voltage at the parts marked with this symbol may
be dangerous.
In conformity with WEEE 2002/96/EC
1.2 Definition of Measurement Categories
CAT I: FormeasurementsoncircuitsnotdirectlyconnectedtotheAC
supply wall outlet such as protected secondaries, signal level,
andlimitedenergycircuits.
CAT II: For measurements performed on circuits directly connected to
the electrical distribution system. Examples are measurements
onhouseholdappliancesorportabletools.
CAT III: For measurements performed in the building installation at
the distribution level such as on hardwired equipment in xed
installationandcircuitbreakers.
CAT IV: For measurements performed at the primary electrical supply
(<1000V) such as on primary overcurrent protection devices,
ripplecontrolunits,ormeters.
1.3 Receiving Your Shipment
Uponreceivingyourshipment,makesurethatthecontentsareconsistent
with the packing list. Notify your distributor of any missing items. If the
equipmentappearstobedamaged,leaclaimimmediatelywiththecar-
rierandnotifyyourdistributoratonce,givingadetaileddescriptionofany
damage.Savethedamagedpackingcontainertosubstantiateyourclaim.
Donotuseaninstrumentthatappearstobedamaged.
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DigitalAnalogMegohmmeterModels1035/1039 5
1.4 Ordering Information
Model 1035 ......................................................................... Cat. #2116.90
Includes soft carrying case, 3 color-coded leads, 1 black test probe, 3 alligator
clips, 2 grip probes, batteries and user manual.
Model 1039 ......................................................................... Cat. #2116.91
Includes soft carrying case, 2 color-coded leads, 1 black test probe, 2 alligator
clips, 2 grip probes, batteries and user manual.
Model 1035 Field Kit.......................................................... Cat. #2115.42
Includes meter, eld case, 3 color-coded leads, black test probe, 3 alligator clips,
2 grip probes, remote test probe, batteries and user manual.
Model 1039 Field Kit.......................................................... Cat. #2115.43
Includes meter, eld case, 2 color-coded leads, black test probe, 2 alligator clips,
2 grip probes, remote test probe, AC current probe, batteries and user manual.
1.4.1 Accessories and Replacement Parts
RemoteTestProbe.............................................................. Cat. #2118.97
SoftCarryingPouch ............................................................ Cat. #2119.02
Setof5Fuses,600V,0.63A,¼x1¼"(6x32mm)................ Cat. #2970.78
FieldCase(Waterproof) ...................................................... Cat. #2118.98
HandsFreeCarryingCase.................................................. Cat. #2118.99
ACCurrentProbeMN211(Lead-1mA/A-240Amax) ....... Cat. #2115.73
Model1035ReplacementLeadSet .................................... Cat. #2119.41
Includes3color-codedleads,blacktestprobe,3alligatorclips,2gripprobes.
Model1039ReplacementLeadSet .................................... Cat. #2119.40
Includes2leads,1blacktestprobe,2alligatorclipsand2gripprobes.
Order Accessories and Replacement Parts Directly Online
Check our Storefront at www.aemc.com/store for availability
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6 DigitalAnalogMegohmmeterModels1035/1039
CHAPTER 2
PRODUCT FEATURES
2.1 Description
Theseportablemegohmmetersfunctionwithbatteries.Theycanbeused
tocheckinsulationandvoltages,andtomeasureresistances.The1039
canalsobeusedfor:
• measurementofthecapacitanceofatelephoneline
• currentmeasurement
• measurement of the pure alternating component of a DC
voltage
These megohmmeters help to ensure the safety of electrical and tele-
phoneinstallations.Theacquisition,processinganddisplayofthemea-
surementsaremanagedbyamicroprocessor.Theyofferawiderangeof
advantagessuchas:
• automaticdetectionofthepresenceofadangerousvoltage
ontheterminalsinMΩranges(allinsulationmeasurement
blockedifV>25V)
• protectionoftheinstrumentagainstexternalvoltagesurges
• operatorsafetybymeansofautomaticdischargeofthehigh
voltageontheequipmenttested
• displayofthedifferencecomparedtoameasurementvalue
in memory
• measurementofthelengthofatelephonelineaccordingto
itscapacitanceperkmunitlength(1039)
• automaticshutdownoftheinstrumenttosavethebatteries
andindicationofthebatterycharge
• fusetestingbyperiodicchecksduringcurrentmeasurement
(1039)
• alarge backlit LCDscreen with awide range ofindicators
makingitveryeasyfortheusertoread
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DigitalAnalogMegohmmeterModels1035/1039 7
2.2 Model 1035 Control Features
Figure 1
1. Safetyterminals-Ø4mm(marked“+”and“G”)anda3-Pointsocket
forconnectingtheremotecontrol
2. Backlightliquidcrystaldisplay
3. Buttons:Yellow(toactivateinsulationmeasurement)
 ALARM, ,, and ΔREL(see§2.7)
4. 6-positionswitch:
 OFF,MΩ-50V,MΩ-100V,MΩ-250V,MΩ-500V,400kΩ
5. Batterycompartmentandstand(notshownindrawing)
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8 DigitalAnalogMegohmmeterModels1035/1039
2.3 Model 1039 Control Features
Figure 2
1. Safetyterminals-Ø4mm(marked“mA”,“+”and“-”).Nexttothe“-”
terminal,therearetwoadditionalcontactsforconnectingtheremote
controlprobe(3-Pointconnector).
2. Backlightliquidcrystaldisplay
3. Buttons:Yellow(toactivateinsulationmeasurement)
 ALARM, ,, and ΔREL(see§2.7)
4. 7-positionswitch:
 OFF,MΩ-50V,MΩ-100V,40kΩ,4000nF,400mA,400V~
5. Batterycompartmentandstand(notshowninthedrawing)
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DigitalAnalogMegohmmeterModels1035/1039 9
2.4 LCD Display Symbols
2.4.1 Digital Display Symbols
Timer On
ALARM Alarm On
> HighLimitTrigger
< LowLimitTrigger
 TestVoltageOn
– NegativeValue
 RefertoUserManual
FUS FuseOpen
>25V MeasuredVoltage>25V
 Lead,ResistanceZeroing
 ActiveBuzzer
 PermanentRun–
 Auto-OffDisabled
 LowBattery
nF nanoFarad
Km Kilometers
REL  RelativePosition
BAT Batterieslow–mustbereplaced
OL OverRange-OverLoad
- - - Insulation<10kΩat50V,<20kΩat100V,
 <50kΩat250V,<100kΩat500V
2.4.2 Analog Bargraph
 Insulation>1.1GΩ
 Insulation<70kΩ
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10 DigitalAnalogMegohmmeterModels1035/1039
2.5 Button Functions
2.5.1 Yellow Push Button
The yellow button is used to initiate the test voltage when measuring
insulationresistance.Inanyfunctionsetting(exceptOFF),themegohm-
meteris in the voltage mode and works asa voltmeter todetect if any
voltageispresentonthetestedsample.Ifavoltagegreaterthan25Vis
detected,the yellow test buttonisdisabled and insulation testingisnot
possible.
2.5.2 ALARM Button
TheALARMbuttoncanbeusedtoactivate/deactivatethealarmthresh-
oldsduringinsulationandresistancemeasurements.
Itisalsousedwiththe►and ▲ selection cursor buttons toadjustthe
alarmsetpoints.
2.5.3 Cursor Button
Whenprogrammingthealarmsetpoints,the►cursorbuttonmakesthe
followingsymbolsashasfollows:
- themeasurementunit(ifapplicable),
- thethousandsdigit,
- thehundredsdigit,
- thetensdigit,
- theunitsdigit,
- thedecimalpoint,
- thealarmtrigger(aboveorbelowthesetting)
- anditthenreturnstothemeasurementunits.
ThecapacitanceperunitlengthinnF/km(withthe buttononthe1039).
By pressing the ► button, you can make the following elements ash
successively:
- thetensdigit,
- theunitsdigit,
- anditthenreturnstothetensdigit.
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DigitalAnalogMegohmmeterModels1035/1039 11
2.5.4 Scroll Cursor Button
When programming the alarm setpoints, the ▲ button is used to scroll
throughthepossiblevaluesforeachparameter,whichashes:
- MΩor GΩforinsulation,kΩor Ωforresistance,forthemeasure-
mentunits,
- 1,2,3or_forthethousandsdigit,
- 0,1,2,3,4,5,6,7,8and9forthehundreds,tensandunits,
- “-.---”or“--.--”or“---.-”or“----”forthedecimalseparator,
- >or<foraboveorbelowthresholdtrigger.
- WhenprogrammingthecapacitanceperunitlengthinnF/km,the
▲buttoncanbeusedtochangethevaluesoftheashingdigits
to0,1,2,3,4,5,6,7,8or9.
2.5.5 Backlight Button
1035 and 1039: Whenthisbuttonispressed,thebacklightingofthedis-
playcomeson.Itwillbeturnedoffautomaticallyoneminutelater.Whenit
islit,youcanturnthebacklightingoffbypressingthisbuttonagain.
1039: Whentheswitchison4000nF,alongpressonthisbuttonenables
youtoprogramtheunitlengthvalue(see§2.7.8).
2.5.6 REL Button
A long press on this button enables you to memorize a value. The
measurements that follow will be the positive or negative deviation
comparedwiththevaluememorized(doesnotfunctionforvoltageonthe
MΩpositions).
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12 DigitalAnalogMegohmmeterModels1035/1039
2.6 Measurement Functions
2.6.1 AC/DC Voltage Measurement - Safety Check
AssoonastheswitchissettooneoftheMΩpositions,theinstrument
measuresthevoltagebetweenits+and-terminals.Thevalueofthisvolt-
ageisdisplayed(0to600VAC/DCmax).
If the voltage present is less than 25V,theinsulationcanbe
tested,butthelowerthetestvoltagethegreaterthepossibilityof
error.
If the voltage is greater than 25V, and>25Varedisplayed.
Pressingtheyellowbuttonwillonlycausethebuzzertoturnon
andthe symboltoashuntilthebuttonisreleased.
Thesewarningsonlyendifthevoltagefallsbelow25V(disconnectionof
theleadsorremovalofthevoltage)oriftheyellowbuttonisreleasedor,
naturally,ifyouturnofftheinstrumentbyreturningtheswitchtotheOFF
position.
WARNING: If the voltage detected is above 600V (outside measurement
range), OL will appear on the digital display.
2.6.2 Insulation Resistance Testing
Ifthereisnotadangerousvoltage(seeabove),theusercanthenmeasure
theinsulationbypressingtheyellowbutton.Thehighvoltageisthengener-
atedbetweentheterminals(marked+and-).Thevalueofthemeasure-
mentisshownonthelogarithmicscaleofthebargraphandonthedigital
display,withthecorrespondingMΩor GΩsymbol.Assoonastheyellow
buttonisreleased,theinstrumentreturnstovoltagemeasurementmode.
WARNING: If the voltage generated may be dangerous, is displayed.
The instrument indicates if the value measured is outside its mea-
surement range. If the measured insulation resistance is greater than
400MΩ(1039),2or20GΩ (1035),theOLsymbolisdisplayedonthedig-
ital display instead of a value. When the measurement is greater than
1.1GΩ, the ► symbol lights up on the right-hand side of the bargraph.
Similarlythedigitalmeasurementdisplayindicates“---”iftheinsulation
resistanceislessthan:
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DigitalAnalogMegohmmeterModels1035/1039 13
Model 1039: 10kΩat50V;20kΩat100V
Model 1035:
10kΩ at 50V; 20kΩ at 100V; 50kΩ at 250V; 100kΩat
500V
When the measurement is less than 70kΩ,onlythe◄symbollightsup
ontheleft-handsideofthebargraph.
Tomeasurehighinsulationvalues,youareadvisedtousethe“G”guard
terminal to remove the inuence of supercial leak currents and “hand
capacitance”.
2.6.3 Resistance
Resistancemeasurementcorrespondstothe40kΩpositionoftheswitch
onthe1039and the 400kΩ position onthe1035.The measurementis
indicatedonthedigitalmeasurementdisplay,accompaniedbytheΩor
kΩsymbolifnecessary.Theinstrumentindicatesifthevaluemeasuredis
outsideitsmeasurementrange.Iftheresistanceisgreaterthan40kΩor
400kΩ,dependingontheinstrument,theOLsymbolisdisplayedonthe
digitalmeasurementdisplay.A programmed threshold may trigger an
alarm(seepg18).
2.6.4 Capacitance (1039)
Capacitance measurement corresponds to the 4000nF position of the
switch.The measurement isshownonthedisplayaccompanied by the
nFsymbol.Thelengthofthetelephonelinemeasuredisindicatedinkm
onthedigitalthresholddisplay,accordingtotheprogrammedcapacitance
perunitlength.
If the leads are set up in a short circuit,theinstrumentindica-
tionsOLonthedigitalmeasurementdisplayandthedistanceis
---km.
If the capacitance measurement is greater than 4000nF,the
OLsymbolisdisplayedonthedigitalmeasurementdisplay.
If the distance measurement is greater than 80km, the OL
symbolisdisplayedonthedigitalmeasurementdisplay.
If the leads are not connected,thedigitalmeasurementdisplay
indicates 0.00.
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14 DigitalAnalogMegohmmeterModels1035/1039
2.6.5 AC/DC Current (1039)
Currentmeasurementcorrespondstothe400mApositionoftheswitch.
The measurement is shown on the display accompanied by the mA
symbol.Thefuseischeckedperiodically.
If the current measurement is greater than 400mAAC/DC,the
OLsymbolisdisplayedonthedisplay.TheMN211CurrentProbe
maybeusedtoextendthemeasurementrangeto200AAC.
2.6.6 AC Voltage (1039)
ACvoltagemeasurementcorrespondstotheV~positionoftheswitch.The
measurementisshownonthedisplayaccompaniedbytheVACsymbol. In
thisfunction,theDCcomponentisnotmeasured.
If the voltage measurement is greater than 400VAC, the OL
symbolisdisplayedonthedigitalmeasurementdisplay.
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DigitalAnalogMegohmmeterModels1035/1039 15
2.7 Special Functions
2.7.1 Battery Life Indication
WhenyoumovetheswitchfromtheOFFpositiontooneofthefunction
positions,thebatteryvoltageisappliedtothecircuit.Allthedisplayseg-
mentslightupatthesametimefor1second.Thenallthesegmentsgoout
(for2seconds)exceptthe andthe◄and►symbolswhichdelimit
thesizeofthebargraph.
Thebargraphindicatesthebatterychargelifeandthedigitalmeasurement
displayindicatesthechargelifeavailable(0.00to1.00=0to100%).
Theinstrumentcanbeturnedoffatanytimebyturningtherotaryswitch
toOFF.
2.7.2 Auto-Off
After5minuteswithoutanyactivity,theinstrumentautomaticallyshutsoff.
Tostartuptheinstrumentagain,pressanyoneofthebuttons,turnthe
switch,orpresstheyellowtestbuttonontheremotecontroltestprobe.
DISABLING/ENABLING THE AUTO-OFF
• TodisabletheAuto-Off,keepthe buttonpresseddownwhen
turningONtheinstrument.The symbolisthendisplayed,indi-
catingthattheAuto-Offfunctionhasbeendisabled.
• ToenabletheAuto-offfunction,turntheinstrumentOFFandthen
turnitbackONagain.Auto-Offisthedefaultmode.
2.7.3 Battery Auto Test
Thebatterysupplyvoltageismeasuredautomaticallyeverysecond.The
batteryvoltagerangeforcorrectoperationis7Vto10V.Therearefour
possiblecases:
• Thevoltageiscorrect:Nothingisdisplayed.
• Thevoltageis<7.1V:the symbolashes.Remainingbattery
lifeislimited.
• Thevoltageis<6.9V:the symbolremainslit.Measurement
accuracyisnolongerassured.Replacethebatteries.
• Thevoltageiscloseto6.7V:thedigitaldisplayindicatesBATand
then,after5seconds,theshutdownbuzzersounds,andtheAuto
OFFfunctionisactivated.Theinstrumentshutsdown.
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16 DigitalAnalogMegohmmeterModels1035/1039
2.7.4 Fuse (1039)
The fuse is tested automatically when the instrument is started up and
thencheckedperiodicallyduringcurrentmeasurement.
2.7.5 Buzzer
DISABLING/ENABLING THE BUZZER
KeeptheALARMbuttonpresseddownwhenyoustartuptheinstrument
byturningtheswitch.The symbolisnolongerdisplayed.
To reactivate the buzzer, switchthe instrument OFF andthenback ON
again.
THE DIFFERENT SOUNDS
Whenthe symbolisdisplayed,thebuzzerisactive.Itgivesoutdiffer-
entsounds,dependingontheoperationorwarning.
• Short buzz(65msat2kHz):
  -pushonabutton
  -autoOFF
• Continuous buzz(at2kHz):
  -measurementislowerthantheminimumsetpoint
  -measurementishigherthanthemaximumsetpoint
• Short, higher buzz(65msat4kHz):
  -whenadisabled(inactive)buttonispressed
  (excepttheyellowtestbutton)
• Repeated high buzzes(at4kHz):
  -thedetectedvoltage(safetycheck)atthesampleis 
greaterthan25Vandtheyellowbuttonispushed
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DigitalAnalogMegohmmeterModels1035/1039 17
2.7.6 Alarm Setpoints
Alarm setpoints can only be programmed for insulation and resistance
measurement.Thesetpointscanbeupperorlowerthresholds.Theycan
be active or inactive and will be stored in the memory even after the
instrument has been turned off.
PROGRAMMING OF THE ALARM SETPOINTS
ToprogramthesetpointpresstheALARMbuttonuntiltheALARMsymbol
isdisplayedandbeepsasecondtime(thesetpointunitwillblink,e.g.MΩ).
Thevalueofthesetpointcorrespondingtotheselectedrangeisindicated
onthesmalldigitaldisplay.
If no value was previously programmed,thedisplayindicatesadefault
setpoints:
• On the 1039: >0.050MΩfortheMΩ-50Vposition
   >0.100MΩfortheMΩ-100Vposition
   <20.00kΩforthe40kΩposition
• On the 1035: >0.05MΩfortheMΩ-50Vposition
   >0.10MΩfortheMΩ-100Vposition
   >0.25MΩfortheMΩ-250Vposition
   >0.50MΩfortheMΩ-500Vposition
   <20.00kΩforthe400kΩposition
Atthismoment,itispossibletoprogramthethresholdusingthe►and
▲buttons.
During this programming, if you change the switch position, you lose
what you have just done.
Youcanquittheprogrammingmodeandrecordthethresholdbyanother
longpressontheALARMbutton.
If the programmed setpoint is too high,itiscorrectedwhenitis
storedinthememory:themaximumvalueisentered.Forexam-
ple,a2GΩinsulationthresholdwillbestoredinthememoryas
399.9MΩonthe1039,whileforresistancemeasurement700kΩ
willbecome399.9kΩonthe1035.
If the setpoint has been improperly input,itiscorrectedwhen
it is stored in the memory: For example, 002MΩ will become
2.00MΩ.
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18 DigitalAnalogMegohmmeterModels1035/1039
TURNING THE ALARM ON AND OFF
TheAlarmcanbeturnedONbyashortpressontheALARMbutton.The
buzzer beeps and theALARM symbol, the < or > symbol and the pro-
grammedsetpointvalueisthendisplayedonthedigitalsetpointdisplay.
TheAlarmcanbeturnedOFFbyasecondshortpress(andonebeep)on
theALARMbutton.TheALARMsymbol,the<or>symbolandthealarm
setpointwilldisappear.
Note:Ifyouareininsulationmeasurementmode,thesetpointisindicated
innegativeonthebargraph.Thismeansthatifthemeasurementislower
thanthesetpoint,thesegmentcorrespondingtothesetpointislit,ifthe
measurementishigherthanthesetpoint,thesegmentisnotlitandifthe
measurementisequaltothesetpoint,thesegmentashes.
If the REL function is on andyouactivateasetpoint,itwillapplytothe
absolutevalueofthevaluedisplayed.
TRIGGERING OF THE ALARM
Examplesininsulationmeasurement:
• If an upper setpoint of 100MΩis active,thedisplayindicates
“ALARM>100.0MΩ”.
• Ifthemeasurementexceedsthisvalue,acontinuousbeepwillbe
triggeredandthewholedigitalthresholddisplaywillash.
• If a lower setpoint of 100MΩis active, the display indicates
“ALARM<100.0MΩ”.
• Ifthemeasurementfallsbelowthisvalue,acontinuousbeepwill
betriggeredandthewholedigitalthresholddisplaywillash.
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