AEMC K100 User manual

ENGLISH
nDC/AC MICROPROBE K100
K110
User Manual
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AEMC
INSTRUMENTS
®DC/AC MicroProbe
Model K100
!
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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 #: 1200.67 / 2111.73
Model #: K100 / K110
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................................................3
1.2 DenitionofMeasurementCategories .....................................4
1.3 ReceivingYourShipment..........................................................4
1.4 OrderingInformation.................................................................4
2. PRODUCT FEATURES ...................................................................... 5
2.1 Description................................................................................5
2.2 ModelK100Features ...............................................................6
2.3 ModelK110Features................................................................7
3. SPECIFICATIONS............................................................................. 8
3.1 ElectricalSpecications ............................................................8
3.2 EnvironmentalSpecications....................................................9
3.3 MechanicalSpecications ........................................................9
3.4 SafetySpecications ................................................................9
3.5 TypicalFrequencyResponse .................................................10
4. OPERATION .................................................................................. 11
4.1 MakingMeasurementswiththeK100/K110 ........................... 11
4.2 IndicatorLights-GreenandRedLEDs.................................. 11
4.3 ModelK100OperationExamples ...........................................12
DCCurrentMeasurementExample(K100) ..............................12
DCCurrentMeasurementExample-CurrentReversed........12
Two-WireSum-of-CurrentsExample(K100) ............................13
Two-WireCurrentDifferentialExample(K100).........................13
OscilloscopeMeasurementExample(K100)............................14
MaximumStepDiscontinuityExample(K100)..........................14
4.4 ModelK110OperationExamples ...........................................15
MeasuringtheDCComponentofan(AC+DC)Waveform ....15
MeasuringtheACComponentofan(AC+DC)Waveform ......15
OscilloscopeMeasurementExample(K110)............................16
4.5 TipsForMakingPreciseMeasurements ................................16
4.6 ResidualReadingsFollowingSevereOverloads....................19
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5. MAINTENANCE ............................................................................. 20
5.1 Warning..................................................................................20
5.2 Battery Installation ..................................................................20
5.3 Cleaning..................................................................................21
RepairandCalibration...........................................................................22
TechnicalandSalesAssistance ............................................................22
LimitedWarranty ...................................................................................23
WarrantyRepairs...................................................................................23
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DC/AC MicroProbe Models K100 and K110 3
CHAPTER 1
INTRODUCTION
WARNING
Thesesafetywarningsareprovidedtoensurethesafetyofpersonnel
andproperoperationoftheinstrument.
• Readtheinstructionmanualcompletelyandfollowallthesafety
informationbeforeattemptingtouseorservicethisinstrument.
• Use caution on any circuit: Potentially high voltages and cur-
rentsmaybepresentandmayposeashockhazard.
• ReadtheSafetySpecicationssectionpriortousingtheModel
K100/K110.Neverexceedthemaximumvoltageratingsgiven.
• Safetyistheresponsibilityoftheoperator.
• NEVERopenthebackoftheinstrumentwhileconnectedtoany
circuitorinput.
• ALWAYSconnecttheModelK100/K110adaptertothedisplay
devicebeforeclampingtheprobeontothesampleundertest.
• ALWAYS inspect the instrument, probe, probe cable and
output terminals prior to use. Replace any defective parts
immediately.
• NEVER use the Model K100/K110 on electrical conductors
ratedabove300VCATII,EN61010-1.
1.1 International Electrical Symbols
Thissymbolsigniesthattheinstrumentisprotectedbydoubleor
reinforcedinsulation.Useonlyspeciedreplacementpartswhen
servicingtheinstrument.
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.
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4 DC/AC MicroProbe Models K100 and K110
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.
1.4 Ordering Information
DC/AC MicroProbe Model K100.......................................... Cat. #1200.67
DC/AC MicroProbe Model K110.......................................... Cat. #2111.73
Both models include an electronic plug-in module with an attached current probe, 9V battery,
and user manual
Order Accessories and Replacement Parts Directly Online
Check our Storefront at www.aemc.com/store for availability
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DC/AC MicroProbe Models K100 and K110 5
CHAPTER 2
PRODUCT FEATURES
2.1 Description
ModelK100andModelK110arelowcurrentmeasurementinstruments
thatfeatureacompact,highsensitivitycurrentprobe.Unlikeotherinstru-
ments,theModelK100exhibitsawidedynamicoperatingrange,which
extendsfrombelow100µAto±4.5Apeak,fromDCto2.0kHz*,withoutthe
needforranging.TheK110hasanoperatingrangeof100µAto±450mA
Peak,fromDCto1500Hz.*
ModelsK100andK110aredesignedtobeoperatedinconjunctionwitha
digitalmultimeter,oscilloscopeorrecordingdevice.TheMicroProbeout-
putsthecurrentmeasuredintheformofavoltagethatistheimageofthe
current,inshapeandamplitude.TheModelK100outputs1mVpermAof
measuredcurrent.TheModel K110outputs 10mVpermA ofmeasured
current.TotakeadvantageoftheModelK100highsensitivity,bestresults
areobtainedthrough4-1/2digit(ormore)DMMwitharelativezerofunc-
tion.TheModelK110wasdesignedtoprovidetheoperatorwithenhanced
lowcurrentlinearityandaccuracy,butislimitedto450mAPeakcurrent.
The Model K100/K110 always outputs a signal proportional to the total
current(AC+DC)intheconductorundertest.Thishasproventobethe
most versatile signal output format, and allows the user to isolate and
measureDCandAC componentsofmeasuredcurrent separately,ifso
desired.Typicalapplicationsinclude4to20mAloopmeasurements,auto-
motive current applications, benchtop electronic current consumption in
circuits,andotherapplicationsrequiringverylowcurrentmeasurements
incrowdedareas.
* See Electrical Specications
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6 DC/AC MicroProbe Models K100 and K110
2.2 Model K100 Features
8
7
1
2
3
4
5
6
Figure 1
1.Positive:Redbananaplug(+)
2.Negative:Blackbananaplug(-)
3.PowerONindicator(greenLED)
4.OVERLOADindicator(redLED)
5.Powerswitch
6.Zeroadjustknob(pushinandturntozero)
7.Probewindowaperture
8.Probehandle
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DC/AC MicroProbe Models K100 and K110 7
2.3 Model K110 Features
®
8
7
1
2
3
4
5
6
Figure 2
1.Positive:Redbananaplug(+)
2.Negative:Blackbananaplug(-)
3.PowerONindicator(greenLED)
4.OVERLOADindicator(redLED)
5.Powerswitch
6.Zeroadjustknob(pushinandturntozero)
7.Probewindowaperture
8.Probehandle
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8 DC/AC MicroProbe Models K100 and K110
CHAPTER 3
SPECIFICATIONS
3.1 Electrical Specifications
Model K100
Current Range:
0to±4.5ADC
0to3Arms(sinusoidal)
Output (Vout):1mV/mA
Resolution:
DC:50µAtypical
AC:100µAtypical
Accuracy:
DC:1%reading±200µA
AC:2%reading±200µA
Output Noise:
<100µV,DCto3kHz
Frequency Response:
DCto2kHz(@-3dBsine)
Zero Adjust:
±25mA
Model K110
Current Range:
0to±450mADC
0 to 300mA rms
Output (Vout): 10mV/mA
Resolution:
DC:50µAtypical,
AC:100µAtypical
Accuracy:
DC:0.5%reading±150µA
AC:0.8%reading±200µA
Output Noise:
<100µV,DCto3kHz
Frequency Response:
DCto1.5kHz(@-3dBsine)
Zero Adjust:
±25mA
Rise Time: <200µS,10%to90%Vout
Fall Time: <200µS,90%to10%Vout
Output Impedance: 200Ω
Probe Inductance: <1µH
Inuence of Adjacent Conductor: <50µA/A(K100);<100µA/A(K110)
Inuence of Earth’s Field:<120µA,nulltomaximum
Overload LED (Red):Indicatesmomentaryorcontinuousoverload
Power LED (Green): IndicatespowerONandgoodbattery
 LED(Green)ONbetween6.5to10V
Power Source: 9Valkaline,NEDA1604,6LR61orIEC6LF22
 Batterylife20Happrox.withalkalinebattery
(Reference Conditions: 23°C ± 3°, 20 to 75% RH; battery voltage 9V ± 0.1V; earth’s magnetic
eld < 40 A/m; absence of AC elds; input impedance of display device ≥ 1MΩ/100 pF; DC
or sinusoidal AC current 45 to 65Hz.)
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DC/AC MicroProbe Models K100 and K110 9
3.2 Environmental Specifications
Operating Temperature: -14°to131°F(-10°to55°C)
Storage Temperature:-40°to176°F(-40°to80°C)
Humidity: <95%@≤35°C,75%@55°C
3.3 Mechanical Specifications
Dimensions (Probe): 4.4x0.6x1.0"(111x15x25mm)
Dimensions (Electronic Module): 4.9x2.5x1.1"(124x64x28mm)
Weight: 9oz(250g)
Connectors: Two4mmbananaplugs;standard3/4"(19mm)spacing
Maximum Conductor Diameter: 3/16",0.180"(4.5mm)
Cable Length: 5ft(1.5m)
3.4 Safety Specifications
Working Voltage:
EN61010-1,300VCATII
CEmarkforElectromagneticCompatibility.
Immunity(EN50082.1),IEC1000-4-3aptitudecriteriaA:
DC:15mV@0,AC(60Hz):2dBfrom10mAto4.5A
Emmissivity(EN50081.1):negligible
Drop Test:1mperIEC1010
Shocks:100GperIEC68-2-27
Vibrations: IEC 529
Protection Index:IP40perIEC529
Electromagnetic Compatibility:
EN50082-1classAEN50081-1
*All specications are subject to change without notice.
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10 DC/AC MicroProbe Models K100 and K110
3.5 Typical Frequency Response
Model K100
2200
2000
1800 1600
1400
1200
1000
800 600
400 200
50
0
-0.5
-1.0
-1.5
-2.0
-2.5
-3.0
-3.5
-4.0
30 mA
3.0 A
Frequency (Hz)
Decibels (dB)
Figure 3
Model K110
1600
1400
1200
1000
800 600
400 200
0
0
-0.5
-1.0
-1.5
-2.0
-2.5
-3.0
-3.5
-4.0
0 - 300 mA RMS
Frequency (Hz)
Decibels (dB)
Figure 4
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DC/AC MicroProbe Models K100 and K110 11
CHAPTER 4
OPERATION
4.1 Making Measurements with the K100/K110
• Removeanyconductorfromwithintheprobejaws.
• Plugtheelectronicmoduleintothedisplayingdevice(e.g.,DMM,oscil-
loscope).Notethepolarityofthemoduleoutputbananaplugs(red=
positive[+],black=negative[-]).
• Selecttheappropriaterangeondisplayingdevice(e.g.,DMM,oscil-
loscope).Notethatthemoduleoutputis1mV/mAforModelK100and
10mV/AformodelK110.
• TurndisplayingdevicepowerON.TurnontheModelK100/K110(the
greenLEDshouldbeON,andtheredLEDOFF).
• Withtheprobedisconnectedfromtestsamples(noconductorinprobe
jaw window), adjust the zero control (push in the knob and turn) to
readzerovoltsonthedisplayingdevice.Intheunlikelyeventwhere
thezeropointisunobtainable,refertoResidual Readings Following
Severe Overloads(§4.6)-theModelK100/K110probemaybetem-
porarilymagnetized.
• Clamp the probe around the conductor to be tested. The displaying
deviceshouldnowdisplaythemeasuredconductorcurrent.InDC,a
positivereadingindicatescurrentowinginthedirectionofthearrow
ontheprobe.Anegativereadingindicatescurrentowintheopposite
directionofthearrow.
4.2 Indicator Lights - Green and Red LEDs
• TheGreenLEDindicatesthattheModelK100/K110isONandthatthe
batteryisgood.TheGreenLEDwillnotlightunderlowbatterycondi-
tions.Replacethe9VbatteryifthegreenLEDisnotlit.
• The Red LED indicates a momentary or continuous overload of the
instrument.ReadingstakenwhiletheRedLEDisONorFLASHING
shouldbeconsideredinaccurate.Momentary or continuouscurrents
exceeding ± 4.7A for Model K100 and 470mA for Model K110, and
dynamiccurrentswithlargestepdiscontinuitieswillcausetheredLED
toturnON.
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12 DC/AC MicroProbe Models K100 and K110
4.3 Model K100 Operation Examples
DC Current Measurement Example (K100)
• Conductorcarrying20.0mADCinthedirectionofthearrow
• VoltmeterplacedinDCVoltsmode
• Voltmeterdisplays20.0mV
20 mA DC
PUSH
DC Zero
20.0 mV
A
C
V
D
C
V
Figure 5
DC Current Measurement Example - Current Reversed (K100)
• Conductorcarrying20.0mADCinoppositedirectionofarrow
• VoltmeterplacedinDCVoltsmode
• Voltmeterdisplays-20.0mV
20 mA DC
PUSH
DC Zero
-20.0 mV
A
C
V
D
C
V
Figure 6
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DC/AC MicroProbe Models K100 and K110 13
Two-Wire Sum-of-Currents Example (K100)
• Twoconductorsinprobeaperture(noteorientations)
• VoltmeterplacedinDCVoltsmode
• Voltmeterdisplays18.0mV
PUSH
DC Zero
18.0 mV
A
C
V
D
C
V
7 mA DC 11 mA DC
Figure 7
Two-Wire Current Differential Example (K100)
• Twoconductorsinprobeaperture(noteorientations)
• VoltmeterplacedinDCVoltsmode
• Voltmeterdisplays-4.0mV
PUSH
DC Zero
-4.0 mV
A
C
V
D
C
V
7 mA DC 11 mA DC
Figure 8
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14 DC/AC MicroProbe Models K100 and K110
Oscilloscope Measurement Example (K100)
• Conductorcarryinga2ApeakACwaveform
• ModelK100connectedtooscilloscope
0
To Oscilloscope
Current Waveform
Oscilloscope
Output
• OFF
• 1 mV/mA
ON OL
AEMC
INSTRUMENTS
®DC/AC MicroProbe
Model K100
0
2.0 A
2.0 V
-2.0 V
Figure 9
Maximum Step Discontinuity Example (K100)
• Conductorcarryingnon-sinusoidalAC
• ModelK100connectedtooscilloscope
• Maximumallowablestep-discontinuity2A
0
To Oscilloscope
Current Waveform
Oscilloscope
Output
• OFF
• 1 mV/mA
ON OL
AEMC
INSTRUMENTS
®DC/AC MicroProbe
Model K100
0
2A
2.0 V
-2.0 V
-2A
Note: Step Discontinuities
Figure 10
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DC/AC MicroProbe Models K100 and K110 15
4.4 Model K110 Operation Examples
Measuring the DC Component of an (AC+DC) Waveform (K110)
• Conductorcarrying20.0mADC+15.0mAAC
• VoltmeterplacedinDCVoltsmode
• Voltmeterdisplays200.0mV
15 mA AC
+
20 mA DC
PUSH
DC Zero
200.0 mV
A
C
V
D
C
V
Figure 11
Measuring the AC Component of an (AC+DC) Waveform (K110)
• Conductorcarrying20.0mADC+15.0mAAC
• VoltmeterplacedinACVoltsmode
• Voltmeterdisplays150.0mV
PUSH
DC Zero
150.0 mV
A
C
V
D
C
V
15 mA AC
+
20 mA DC
Figure 12
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16 DC/AC MicroProbe Models K100 and K110
Oscilloscope Measurement Example (K110)
• Conductorcarryinga0.2ApeakACwaveform
• ModelK110connectedtooscilloscope
0
To Oscilloscope
Current Waveform
Oscilloscope
Output
• OFF
• 10 mV/mA
ON OL
AEMC
INSTRUMENTS
®DC/AC MicroProbe
Model K110
0
0.2 A
2.0 V
-2.0 V
-0.2 A
Figure 13
4.5 Tips For Making Precise Measurements
TheModelK100/K110iscapableofmakingmeasurementsofDCandlow
frequencycurrentsoverawiderange.Herearesomekeyconsiderations
forgettingthemostaccuracyfromyourdisplayinginstrument:
• WhenusingtheModelK100/K110withameter,itisimportantto
selecttherangethatprovides the best resolution.Failuretodo
thismayresultinmeasurementerrors.Theexamplesshownon
thenextpageuseanordinary3-1/2digitDMMwiththeModels
K100andK110,tomeasure16.7mADC.
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DC/AC MicroProbe Models K100 and K110 17
Model K100
16.7mA
PUSH
DC Zero
2
0
V
2
V
2
0
0
m
V
PUSH
DC Zero
.02 V
2
0
V
2
V
2
0
0
m
V
PUSH
DC Zero
2
0
V
2
V
2
0
0
m
V
Resolution: 10mV
Display Error: 19.8%
Resolution: 1mV
Display Error: 1.8%
Resolution: 100µV
Display Error: 0%
Figure 14
Model K110
PUSH
DC Zero
2
0
V
2
V
2
0
0
m
V
PUSH
DC Zero
2
0
V
2
V
2
0
0
m
V
PUSH
DC Zero
2
0
V
2
V
2
0
0
m
V
Resolution: 10mV
Display Error: 1.8%
Resolution: 1mV
Display Error: 0%
Resolution: 100µV
Display Error: 0%
16.7mA
Figure 15
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18 DC/AC MicroProbe Models K100 and K110
• Always zero the Model K100/K110 prior to making a measure-
ment.See§4.1forprocedure.
• Makesurethatprobejawmatingsurfacesarefreeofdustand
contamination. Contaminants cause air gaps between sensor
halves, making the Model K100/K110 susceptible to external
magneticeldswhichcancontributetomeasurementerrors.See
§5.3forcleaningprocedure.
• Donotallow probejawstoabruptly snapclosedfromthe open
state. This can lead to residual readings. If this happens, the
ModelK100/K110willneedtoberezeroed.
• Bewareofshort-circuitcurrents.Largein-rushcurrents(whichcan
occurwhenpowerisrstappliedinacircuit)andlargehigh-cur-
renttransientsmaycausevaryingdegreesofresidualreadings.
Ifindoubtofaparticularreading,removetheprobefromthecon-
ductorundertestandchecktoseethatthedisplaydevicereturns
zero.Ifnot,itwillbenecessarytorezerotheModelK100/K110.
• WhenusingtheModelK100/K110tomeasureACcurrents,keep
inmindthemaximumcurrentratingsandthefrequencyresponse
curves shown in the electrical specications section. Dynamic
currentsthatcontainlargestepdiscontinuitiesand/orfrequency
constituents near or beyond the measurement passband are
subject to measurements errors and waveform distortion (oscil-
loscopedisplay).IftheredLEDcomesonduringmeasurement,
theMicroProbe’soutputsignalmaybeinerror.
ManyDVMsprovidenull(relative)measurementcapability.ADVMplaced
inthenullmodedisplaysthedifferencebetweenastorednullvalueand
theinputsignal.
• YoucanuseaDVM’snullfunctioninplaceoftheexternalDCzero
control to cancel any DC offset from the K100/K110. The DVM
nullfunctionshouldbeenabledwiththeproberemovedfromthe
conductorimmediatelybeforemeasurement.
• You can use a DVM’s null function to display changes in mea-
suredcurrentfromaxed(constant)level.Inthisapplication,the
DVMnullfunctionisenabledwiththeprobeconnectedtothecon-
ductor.
When making null (relative) measurements, the probe aperture current
(notdisplayedcurrent)mustnotexceedthemaximumratingssetforthin
thespecicationssection.
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