AEMC 670 User manual
CLAMP-ON METER
670
675
ENGLISH User Manual
Certificate 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 #: 2117.49 / 2117.50
Model #: 670 / 675
Please fill in the appropriate date as indicated:
Date Received: ___________________________
Date Calibration Due: ______________________
Chauvin Arnoux®, Inc. d.b.a AEMC®Instruments
www.aemc.com
Table of Contents
1. INTRODUCTION........................................ 3
1.1 International Electrical Symbols .............. 4
1.2 DenitionofMeasurementCategories.... 4
1.3 ReceivingYourShipment ........................ 5
1.4 OrderingInformation ............................... 5
1.4.1 Accessories/ReplacementParts.. 5
2. PRODUCT FEATURES............................... 6
2.1 Description .............................................. 6
2.2 Model670/675ControlFeatures............. 7
2.3 LCDDisplay ............................................ 8
2.4 ButtonFunctions ..................................... 9
2.4.1 HOLDButton ............................... 9
2.4.2 CorrectionofZeroin
DCmeasurement........................ 9
2.4.3 AutoPowerOFF.......................... 9
2.4.4 DISPLAYButton ........................ 10
2.4.5 MIN/MAXFunction(500ms) ...... 10
2.4.6 PeakFunction(1ms).................. 10
2.4.7 BacklightButton......................... 10
3. SPECIFICATIONS.................................... 11
3.1 ElectricalSpecications ........................ 11
3.2 MechanicalSpecications..................... 13
3.3 EnvironmentalSpecications ................ 14
3.4 SafetySpecications............................. 14
4. OPERATION ............................................ 15
4.1 ACCurrentMeasurement ..................... 15
4.2 ACVoltageandCurrent
MeasurementSimultaneously............... 16
4.3 DCCurrentMeasurement(675only) ......17
4.4 ACVoltMeasurement ........................... 18
4.5 DCVoltMeasurement ........................... 19
4.6 ResistanceMeasurement ..................... 20
4.7 ContinuityMeasurement ....................... 21
4.8 TemperatureMeasurement ................... 22
4.9 FrequencyMeasurementUsing
VoltageInput ......................................... 23
4.10 FrequencyMeasurementUsing
CurrentInput ......................................... 24
5. MAINTENANCE....................................... 25
5.1 Warning!................................................ 25
5.2 Cleaning ................................................ 25
5.3 BatteryReplacement............................. 25
RepairandCalibration............................................ 27
TechnicalandSalesAssistance ............................. 27
Limited Warranty .................................................... 28
WarrantyRepairs.................................................... 28
Clamp-onMeterModels670and675
3
CHAPTER 1
INTRODUCTION
Warning
● Readtheusermanualbeforeoperatingand
followallsafetyinformation.
● Onlyusethemeterasspeciedinthisuser
manual.
● Neverusethismeteronacircuitwithvolt-
agesgreaterthan600Vrms@50/60Hz,
CATIVor1000V,CATIII.
● Nevermeasurecurrentwhilethetestleads
areconnectedtotheinputjacks.
● Donotoperatethemeterifthebodyortest
leadslookdamaged.
● Checktherotaryrangeswitchandmake
sureitisatthecorrectpositionbeforeeach
measurement.
● Donotperformresistanceandcontinuity
testonalivecircuit.
● Useextremecautionwhenmeasuringlive
systemswithvoltagesgreaterthan60VDC or
30VAC.
● Useextremecarewhenworkingaroundbus
barsandbareconductors.
● Donotusethemeterinoverrange/overload
conditions( ).
● Foraccuratereadings,changethebattery
whenthe symbolappears.
4
Clamp-onMeterModels670and675
1.1 International Electrical Symbols
This symbol signifies that the instrument is protected by
double or reinforced 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.
This symbol refers to a type A current sensor. This symbol sig-
nifies that application around and removal from HAZARDOUS
LIVE conductors is permitted.
Ground.
In conformity with WEEE 2002/96/EC.
1.2 Definition of Measurement Categories
CAT II: Formeasurementsperformedoncircuitsdirectly
connected to the electrical distribution system.
Examples are measurements on household
appliancesorportabletools.
CAT III: For measurements performed in the building
installation at the distribution level such as on
hardwired equipment in xed installation and
circuitbreakers.
CAT IV: For measurements performed at the primary
electrical supply (<1000V) such as on primary
overcurrent protection devices, ripple control
units,ormeters.
Clamp-onMeterModels670and675
5
1.3 Receiving Your Shipment
Upon receiving your shipment, make sure that the con-
tentsareconsistentwiththepackinglist.Notifyyourdis-
tributorofanymissingitems.Iftheequipmentappearsto
bedamaged,leaclaimimmediatelywiththecarrierand
notifyyourdistributoratonce,givingadetaileddescription
ofanydamage.Savethedamagedpackingcontainerto
substantiateyourclaim.
1.4 Ordering Information
TRMS Clamp-on Meter Model 670............Cat. #2117.49
Includes meter, set of test leads (red/black with safety needle tips),
K-type thermocouple, one 9V battery, soft carrying case and a user
manual.
TRMS Clamp-on Meter Model 675............Cat. #2117.50
Includes meter, set of test leads (red/black with safety needle tips),
K-type thermocouple, one 9V battery, soft carrying case and a user
manual.
1.4.1 Accessories and Replacement Parts
SoftCarryingCase ......................................Cat. #2118.89
K-typeThermocouple ..................................Cat. #2118.90
Set of 2, 5 ft color-coded leads....................Cat. #2152.05
6
Clamp-onMeterModels670and675
CHAPTER 2
PRODUCT FEATURES
2.1 Description
The AEMC® Models 670 and 675 are general purpose
professional clamp-on meters that measure up to the
tougheststandards.Thesemetersoeracompletesetof
measurementranges(ACAmps,DCAmps[675only],AC
Volts,DCVolts,Ohms,Continuitywithbeeper,Frequency
from V or A, and Temperature) and are in compliance
with international safety and quality standards to ensure
professionalandreliablemeasuringtools.
Thesemetersaredesignedtomeasureanddisplayamps
and volts at the same time. They are also auto-ranging
andprovide the bestmeasurement rangeand resolution
fortroubleshooting.
The Models 670 and 675 are sized for comfortable,
one-handed operation. The tapered and hooked jaw
design facilitates maneuvering in crowded wiring and
breaker panels, making it easy to select conductors.
The jaw opening accommodates one 750 kcmil cable or
two 350 kcmil cables. The large and easy-to-read 9999-
count LCD features comprehensive user information
symbols, such as low battery, polarity, overload, and an
analog bargraph for easy trend readings. Both models
are equipped with a Data Hold function that freezes the
measurementforlaterviewing,Min/Max,andPeakfunction
forcaptureofsignals.
TheModel670and675areTrueRMSclamp-onmeters
that provide RMS measurements for today’s non-linear
electrical environments.
Clamp-onMeterModels670and675
7
2.2 Model 670/675 Control Features
DISPLAY
MIN MAX
PEAK
HOLD
DUAL TRMS DISPLAY
1000A
1000V CAT III
600V CAT IV
1000V
CAT III
MODEL 670
TRMS CLAMP METER
1
2
3
4
5
6
7
8
DUAL TRMS DISPLAY
ZERO
Press 2s
1
2
3
4
5
6
7
8
1000A
1000V CAT III
600V CAT IV
MODEL 675
TRMS CLAMP METER
1400A
1000V
CAT III
1. JawAssemblyModel670-1.65"(42mm)
Model675-1.58"(40mm)
2. SafetyBarrierAnti-slipGuard
3. LeverforJawOpening/Closing
4. ButtonFunctions(see§2.4)
5. LCDDisplay
6. Positive(red)InputandCOM(black)Input
7. DataHoldButton
8. RotaryRangeSelectorSwitch
8
Clamp-onMeterModels670and675
2.3 LCD Display
Icon Function
AUTO Automatic Range
HOLD Freezes the Display
MIN Minimum Value
MAX Maximum Value
PEAK Peak Value
ZERO ADC Zero Function (675 only)
DC Input
AC Input
Auto Power OFF Indication
Low Battery
Continuity Beeper Enabled
ΩResistance Measurement Indicator
A V Current /Voltage Indicator
C°/F°Degrees Celsius/Fahrenheit
Hz Frequency Measurement Indicator
Clamp-onMeterModels670and675
9
2.4 Button Functions
2.4.1 HOLD Button
• Thelastreadingmaybeheldonthedisplaybypressing
theHOLDbutton.TheHOLD symbolwillappearwhen
thisfunctionisactivated.
• Todeactivate,presstheHOLDbuttonasecondtime.
2.4.2 Correction of Zero in DC measurement
• ThisfunctionontheModel675allowstheusertozeroout
magnetizationeectsinDCcurrentmeasurements.
• This operation must be performed after each high
amplitudecurrentmeasurement.
• TurntherotaryswitchtoADC,withnoconductorinserted
intotheclamp,thenpresstheHOLDbutton(approxi-
mately2seconds)untilthedisplayshowszerocurrent.
Thisisalsoindicatedbyanaudiobeepandthesymbol
ZERO onthedisplay.
2.4.3 Auto Power OFF
•
Ifthereisnoactivityforapproximately10minutes,the
clampwillautomaticallyshutdownandthe symbol
willappear
• To disable Auto Power OFF function, turn the rotary
switchtoOFF.
• Press and hold down the HOLD button and set the
rotaryswitchtoanypositionotherthanOFF.
• The symbol disappears and Auto Power OFF is
deactivated.
10
Clamp-onMeterModels670and675
2.4.4 DISPLAY Button
• When measuring voltage orAC current, pressing the
DISPLAY buttonreplacesthemeasurementshownin
the lower display with the frequency measurement of
thevariableshowninthemaindisplay.Pressingagain
returnstothepreviousdisplay.
• In temperature measurement, pressing DISPLAY
switches the displays from °C to °F of the measured
temperature.
2.4.5 MIN/MAX Function (500ms)
• PressingtheMIN/MAXbuttononcewillsetthemeterto
MIN mode.
• PressingittwicewillsetthemetertoMAX mode.
• Pressingitthreetimeswillsetthemeterbacktonormal
operation.
2.4.6 Peak Function (1ms)
• Thisfunctionisusedformeasuring1-mspeakvaluesin
voltageorcurrent.
• To activate the function, press the MIN MAX PEAK
buttonforatleast2seconds,untilPEAKisdisplayed.
• Toexitthisfunction,pressthebuttonagainforatleast2
secondsorpresstheHOLDbuttontwice.Theclampwill
thenreturntonormalmode.
2.4.7 Backlight Button
• Pressthe buttononcetoturnthebacklighton.Press
itagaintoturnito.
• Whenbacklightison,themeterwillautomaticallyturn
thebacklightoafterapproximately3minutes.
Clamp-onMeterModels670and675
11
CHAPTER 3
SPECIFICATIONS
Thetolerancesassignedtothevalues,ordeclaredlimits,
constitute only the values guaranteed by the manufac-
turer.Valueswithoutatoleranceareforinformationonly.
Thesymbol isdisplayedwhentheinputsignalsexceed
thelimitvaluespossibleineachmeasurementrange.
Thesymbol-isdisplayedin°C/°Fmeasurementwhen
thereisnoinputsignal(opencircuit).
3.1 Electrical Specifications
Reference Conditions: 23°C ±3°C, 48 to 65Hz, no DC component,
sinusoidalFC=
2
,10%to100%ofrange,noexternalalternativemagnetic
eld,noelectricaleld,conductorcenteredinjaws(inA).
AC Amperes
Range Measuring Range Resolution Accuracy
100A 0.00 to 99.99A 0.01A 1.5% ± 5cts (50 to 60Hz)
2.0% ± 5cts (60 to 500Hz)
4.5% ± 5cts (500Hz to 3kHz)
1000A 100 to 1000 A 0.1A
Overload: 1000Arms
DC Amperes (Model 675 only)
Range Measuring Range Resolution Accuracy
100A 0.00 to 99.99A 0.01A 1.2% ± 5cts
1000A 100.0 to 999.9A 0.1A 2.5% ± 5cts
1400A 1000 to 1400A 1A
Overload: 1400ADC
12
Clamp-onMeterModels670and675
AC Volts
Range Measuring Range Resolution Accuracy
1000V 0.0 to 999.9V 0.1V
1.0% ± 5cts (50 to 60Hz)
1.2% ± 5cts (60 to 500Hz)
2.5% ± 5cts (500Hz to 3kHz)
Input Resistance: 1MW
Overload: 1000Vrms
DC Volts
Range Measuring Range Resolution Accuracy
1000V 0.0 to 999.9V 0.1V 1% ± 2cts
1400V 1000 to 1400V 1V
Input Resistance: 1MW
Overload: 1400vDC
Resistance - Ohms (Ω)
Range Measuring Range Resolution Accuracy
1000W0.0 to 999.9W0.1W1% ± 3cts
3.3VDC (Vmax)
10,000W1000 to 9999W1W
Protection: 1000Vrms
Continuity ( )
Range Beeper Activation Accuracy
< 35W1% ± 3cts
3.3VDC (Vmax)
Protection: 1000Vrms
Frequency (Hz)
Function Range Resolution Sensitivity Accuracy
A - Hz 1000Hz 0.1Hz 3Arms 1.0% ± 2cts
V - Hz 10,000Hz 1Hz 5Vrms
Clamp-onMeterModels670and675
13
Temperature (°C / °F)
Range Measuring Range Resolution Accuracy
1000°C -40 to 999.5°C 0.5°C1.0% ± 2°C
1200°C 1000 to 1200°C 1°C
2192°F -40 to 2192°F 1°F 1.0% ± 4°F
Low Battery Indicator:
isdisplayedwhenthevoltagesuppliedbythebattery
islower thanthe operatingvoltage.The measurements
arethenguaranteedforonlyashortperiod.
Power supply:9V,NEDA1604(6F22)alkaline
Battery Life (no buzzer or backlight):
35hours(670)
30hours(675)
Polarity:
displayedwhennegativesignalappliedtoinput
3.2 Mechanical Specifications
Digital Display:
33/4digitsLCDdualdisplay(maxreading9999)
Jaw Opening:
670:1.65"(42mm)
675:1.57"(40mm)
Dimension (L x W x D):
670:10.71x3.15x1.69"(272x80x43mm)
675:10.12x3.15x1.69"(257x80x43mm)
Weight:
670:17oz(480g)withbattery
675:15.5oz(440g)withbattery
Protection Index of Housing:
IP30accordingtoEN60529Ed.92
14
Clamp-onMeterModels670and675
3.3 Environmental Specifications
Altitude: 2000 meters
Operating Temperature:
-14°to122°F(-25to50°C),80%RH,non-condensing
NOTE: If the meter is to be used below 32°F (0°C), we suggest
that the battery be replaced to ensure proper results.
Storage Temperature:
-14°to140°F(-25°to60°C)<80%RH
3.4 Safety Specifications
EN 61010-1 Ed.2001
EN 61010-2-032 Ed.2002
600VCATIV,1000VCATIII
PollutionDegree2
Electromagnetic Compatibility (perNFEN61326)
Compliantwithelectromagneticcompatibilitystandard
NFEN61326-1(07/97)+A1(10/98)+A2(09/2001)
- Radiatedandconductedemission(NFEN55022)
- RadiatedImmunity,criterionB(NFEN61000-4-3)
- ConductedImmunity,criterionA(NFEN61000-4-6)
- Electrostaticdischarges,criterionA(NFEN61000-4-2)
- Transients,criterionB(NFEN61000-4-4)
- Shockwaves,criterionA(NFEN61000-4-5)
Note:Certainhighpowerradio-electricfrequenciesare,
under certain conditions, capable of interfering with the
metrologicalintegrityofthemeter.
*Specications are subject to change without notice
Clamp-onMeterModels670and675
15
CHAPTER 4
OPERATION
4.1 AC Current Measurement
NOTE: Removethetestleadsbeforemeasuringcurrent
ifAC voltage is not going to be measured at the same
time.
• Turntherotaryrangeswitchtothe range.
• Pressthelevertoopenthejaws.
•
Clampthejawsaroundtheconductortobemeasured.
• Ifreadingisunstableandishardtoread,pushthe
HOLD buttonandreadthemeasurement.
WARNING: Ifoverload" "isdisplayed,
unclampthemeterimmediately.
DISPLAY
MIN MAX
PEAK
HOLD
DUAL TRMS DISPLAY
1000A
1000V CAT III
600V CAT IV
1000V
CAT III
MODEL 670
TRMS CLAMP METER
16
Clamp-onMeterModels670and675
4.2 AC Voltage and Current Measurement
Simultaneously
• Turntherotaryrangeswitchtothe or range.
• Connectthetestprobetipstothevoltagetobe
measured.
• Pressthelevertoopenthejaws.
•
Clampthejawsaroundtheconductortobemeasured.
• Voltageandcurrentmeasurementswillbedisplayed
simultaneously.
• Ifreadingisunstableandishardtoread,pushthe
HOLD buttonandreadthemeasurement.
WARNING: Ifoverload" "isdisplayed,
unclampthemeterimmediately.
DISPLAY
MIN MAX
PEAK
HOLD
DUAL TRMS DISPLAY
1000A
1000V CAT III
600V CAT IV
1000V
CAT III
MODEL 670
TRMS CLAMP METER
Clamp-onMeterModels670and675
17
4.3 DC Current Measurement (675 only)
NOTE: Removethetestleadsbeforemeasuringcurrent
if DC voltage is not going to be measured at the same
time
• Turntherotaryrangeswitchtothe range.
• Ifneeded,thedisplaymaybe“zeroed”.Pressand
holddowntheHOLDbuttonforapprox2s.
•
Clampthejawsaroundtheconductortobemeasured.
• ThemaindisplayisADC,thesecondarydisplayisVDC.
TheDISPLAYbuttonisinoperative.
• Ifreadingisunstableandishardtoread,pushthe
HOLD buttonandreadthemeasurement.
WARNING: Ifoverload" "isdisplayed,
unclampthemeterimmediately.
DUAL TRMS DISPLAY
ZERO
Press 2s
1000A
1000V CAT III
600V CAT IV
MODEL 675
TRMS CLAMP METER
1400A
1000V
CAT III
18
Clamp-onMeterModels670and675
4.4 AC Volt Measurement
WARNING: MaximumInputVoltageis600V.Do
notexceedthisvoltagetoavoidelectricalshock
and/ordamagetotheinstrument.
• Turntherotaryrangeswitchtothe range.
• Inserttheredtestleadtothered"+"inputjackand
theblackleadtotheblack"COM"inputjack.
• Connectthetestprobetipstothevoltagetobemea-
sured.
• Ifreadingisunstableandishardtoread,pushthe
HOLD buttonandreadthemeasurement.
WARNING: Immediatelydisconnectthemeter
ifoverload" "isdisplayed.
DISPLAY
MIN MAX
PEAK
HOLD
DUAL TRMS DISPLAY
1000A
1000V CAT III
600V CAT IV
1000V
CAT III
MODEL 670
TRMS CLAMP METER
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