AEMC MF 300-6-2-10-HF User manual

FLEXIBLE
AC CURRENT SENSOR
High Frequency Response
for Oscilloscopes
MiniFlex
®
MF 300-6-2-10-HF
MF 300-10-2-10-HF
ENGLISH User Manual

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 #: 2126.83 / 2126.84
Model #: MF 300-6-2-10 HF/ MF 300-10-2-10-HF
Please fill in the appropriate date as indicated:
Date Received: _________________________________
Date Calibration Due: _______________________
Chauvin Arnoux®, Inc.
d.b.a AEMC®Instruments
www.aemc.com

MiniFlex
®
Flexible AC Current Probe 1
Table of Contents
1. INTRODUCTION............................................................................... 2
1.1 International Electrical Symbols................................................3
1.2 DenitionofMeasurementCategories .....................................3
1.3 Receiving Your Shipment..........................................................4
1.4 Ordering Information.................................................................4
1.4.1 Accessories and Replacement Parts............................4
2. PRODUCT FEATURES ...................................................................... 5
2.1 Description................................................................................5
2.2 Features....................................................................................6
2.3 Control Features .......................................................................7
3. SPECIFICATIONS............................................................................. 8
3.1 Typical Response Curves.......................................................10
3.1.1 Frequency Error..........................................................10
3.1.2 Amplitude Error........................................................... 11
4. OPERATION .................................................................................. 12
4.1 Compatibility ...........................................................................12
4.2 TipsforMakingPreciseMeasurements..................................12
4.3 MakingMeasurements ...........................................................13
5. MAINTENANCE ............................................................................. 14
5.1 Maintenance ...........................................................................14
5.1.1 Battery Replacement ..................................................14
5.1.2 Cleaning......................................................................14
Repair and Calibration...........................................................................15
Technical and Sales Assistance ............................................................15
Limited Warranty ...................................................................................16
Warranty Repairs...................................................................................16

2 MiniFlex
®
Flexible AC Current Probe
CHAPTER 1
INTRODUCTION
WARNING
These safety warnings are provided to ensure the safety of person-
nel and proper operation of the instrument.
• Readthisinstructionmanualcompletelyandfollowallthesafety
information before attempting to use or service this instrument.
• Safetyistheresponsibilityoftheoperator.TheMiniFlex®must
be used only by qualied personnel using applicable safety
precautions.
• Wearprotectiveclothingandglovesasrequired.
• Usecautiononanycircuit:potentiallyhighvoltagesandcurrents
maybepresentandmayposeashockhazard.
• Readthesafetyspecicationssectionpriortousingthecurrent
probe.Neverexceedthemaximumvoltageratingsgiven.
• ALWAYSde-energizethecircuitbeforewrappingtheMiniFlex®
around bare conductors, bus bars, or near live parts. Do not
wrap on live conductors.
• ALWAYS connect the electronic module to the display device
beforewrappingtheMiniFlex®around the sample being tested.
• ALWAYSinspectthemodule,sensor,sensorcable,andoutput
terminals prior to use. Replace any defective parts immediately.
Use only factory parts.
• NEVERusetheMiniFlex®on electrical conductors rated above
1000VCATIII;600VCATIV.

MiniFlex
®
Flexible AC Current Probe 3
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 B current sensor. Do not apply around or remove
from HAZARDOUS LIVE conductors without additional protective means (de-
energizing the circuit or wearing protective clothing suitable for high voltage
work).
Battery
Compliance with the Low Voltage & Electromagnetic Compatibility European
directives (73/23/CEE & 89/336/CEE)
In the European Union, this product is subject to a separate collection system
for recycling electrical and electronic components In accordance with directive
WEEE 2002/96/EC
1.2 Definition of Measurement Categories
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.

4 MiniFlex
®
Flexible AC Current Probe
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.
1.4 Ordering Information
MiniFlex®30/300A,6",100mV/10mV/AHighFrequency
(forusewithanyBNCOscilloscope)................................... Cat. #2126.83
MiniFlex®30/300A,10",100mV/10mV/AHighFrequency
(forusewithanyBNCOscilloscope)................................... Cat. #2126.84
Both models include a 9V battery and a user manual.
1.4.1 Accessories and Replacement Parts
Adapter-BNC(female)/4mmBanana(male) ................... Cat. #2119.94
Order Accessories and Replacement Parts Directly Online
Check our Storefront at www.aemc.com/store for availability

MiniFlex
®
Flexible AC Current Probe 5
CHAPTER 2
PRODUCT FEATURES
2.1 Description
TheMiniFlex®HFisacompactexibleACcurrenttransformercomposed
ofaexiblesensorandanelectronicmodule.Itisdesignedtomeasure
from5Hzto1MHz.Theexiblesensorpermitsmeasurementsonconduc-
tors where standard clamp-on probes could not be used. In particular, it
canbeinstalled in conned spaces,placeswhere access is difcult,or
even wrapped around irregular shapes.
TheMiniFlex®HFislightweight.Itdoesnotusemagneticcoreslikestan-
dard transformers. The transformation principle is based on an air core.
It presents virtually no load to the system under test, has a low phase
shift and excellent frequency response from 5Hz to 1MHz at -3db, and
cannot be damaged by overloads. The sensor assembly is insulated for
1000VCATIII;600VCATIV.TheMiniFlex®HF meets EN 61010 and is
CEmarked.
TheMiniFlex®HFhasanmVoutputproportionaltothecurrentmeasured
fordirect readings on oscilloscopes, DMMs,data loggers andpower or
harmonicmeters.TRMSmeasurementsaretakenwhenconnectedtoa
TRMSmeter.TheMiniFlex®HF is insensitive to DC currents and only the
AC component of the measured signal is measured.
Theexiblesensorisavailableinlengthsof6"and10".

6 MiniFlex
®
Flexible AC Current Probe
2.2 Features
• Measuresfrom0.5Armsto300Arms
• Accuracy 1% of Reading ± 0.3A
• TRMSmeasurementswhenconnectedtoaTRMSinstrument
• No core saturation or damage if overloaded
• 9Vbatteryfortypical140hourcontinuousoperation
• 1MHzfrequencyresponse
• Low phase shift for power measurements
• Insensitive to DC, measures only AC component on DC + AC
signals
• Excellentlinearity
• Lightweight
• Sensor is resistant to oils and aliphatic hydrocarbons
• EN61010;1000VCATIII;600VCATIV;CEMark

MiniFlex
®
Flexible AC Current Probe 7
2.3 Control Features
1
2
3
4
5
6
7
Figure 1
1. Flexiblesensor5mmØ
2. Sensor opening device
3. Shielded cord
4. BNC output connector
5. Green ON/OFF indicator
6. Rangeselectionswitch:
 -ModelMF300-6-2-10-HF(30/300A)
 -ModelMF300-10-2-10-HF(300/300A)
7. OptionalBNC(female)/Banana(male)connector

8 MiniFlex
®
Flexible AC Current Probe
CHAPTER 3
SPECIFICATIONS
REFERENCE CONDITIONS
Quantity of influence Reference values
Temperature 23 ± 5° C
Relative humidity 20 to 75% RH
Frequency of the signal measured 40 to 400Hz
Type of signal Sinusoidal
External electric field < 1V/m
External DC magnetic field (earth field) < 40A/m
External AC magnetic field None
Position of the conductor Centered in the measurement coil
Shape of the measurement coil Nearly circular
Input impedance of the display device connected to housing ≥1MW
MODEL MF 300-6-2-10-HF MF 300-10-2-10-HF
ELECTRICAL
Range 30/300A
Signal Output 100mV/10mV/A
Frequency Range 5Hz to 1MHz @ -3db
Frequency Limitation none
Influence Of Conductor Positioning 1.5% typical, 3% max
Influence Of Conductor Positioning
In Sensor Against Handle 4% typical, 6% max
External Conductor Influence 35dB to 40dB on contact
Accuracy ± 1% +0.3A
Common Mode Rejection 100dB typical, 80dB min
Max peak factor (1) at I nominal 1.5
Residual noise at I = 0 (Arms) (2) 0.3A
Max phase shift at 1kHz (°) 1
Max offset voltage (mVDC)50 5
Max output voltage (Vpeak) ± 4.5
Output impedance (kW)1
Power Source 9V alkaline battery (6LF22)
Battery Life 140 hrs continuous operation or 10,000 one minute measurements
Battery Indicator When Green LED starts blinking, remaining life is approx 8 hours;
When LED is OFF, the battery needs to be replaced
(1):PeakfactorPF=Vpeak/Vrms
(2):Theresidualnoiseaffectsthemeasurementuncertaintyaccordingtotheformula:
(I measured x 0.01)2+ (residual noise)2
I measured
global uncertainty = (I measured ≠ 0)
Ifthecurrentmeasurediszero,theuncertaintyisequaltotheresidualnoise.

MiniFlex
®
Flexible AC Current Probe 9
MODEL MF 300-6-2-10-HF / MF 300-10-2-10-HF
MECHANICAL
Module Output Coaxial cable terminated by an insulated female BNC connector
Module Dimensions 4.0 x 2.5 x 1.1" (103 x 64 x 28mm)
Module Weight 7 oz (200g)
Sensor Diameter 5mm Ø
Sensor Length 6" (152mm) 10"(250mm)
Max Conductor Size 1.77" (45mm) 2.95" (70mm)
Connection Cable Length 6.5 ft (2m)
Flammability Rating Sensor: UL94V0 Housing: UL94V2
Drop Test Per IEC 68-2-32
Vibration Per IEC 68-2-6
Mechanical Shock Per IEC 68-2-27
Weatherproofing IP 50
ENVIRONMENTAL
Operating Temperature Range 14° to 131°F (-10° to +55°C)
Storage Temperature Range -40° to 158°F (-40° to +70°C)
Influence of Temperature Sensor: -10° to 100°C: < 0.5% of Reading per 10°C
Module: -10° to 55°C: < 0.5% of Reading per 10°C
Relative Humidity 10 to 90% RH: 0.1% typical, 0.3% max
Altitude Operating: 0 to 2000m, working voltage derating above;
Non-operating: 0 to 12,000m
SAFETY
Double Insulation Yes, per IEC 1010-2-32
CE Rated Yes
Safety Rating EN 61010, 1000V CAT III; 600V CAT IV
Pollution Level 2
Immunity and Emission Industrial environment
Electromagnetic Compatibility Satisfies the EMC and LVD directives required for CE marking and
product standard IEC 61326-1 (Ed. 97) + A1 (Ed. 98)
Specifications are subject to change without notice

10 MiniFlex
®
Flexible AC Current Probe
3.1 Typical Response Curves
3.1.1 Frequency Error: Model MF 300-6-2-10-HF Diameter 45mm
Model MF 300-10-2-10-HF Diameter 70mm
30A Range:
-10 %
0 %
10 %
20 %
30 %
1Hz 10Hz 100Hz 1000Hz 10000Hz 100000Hz
300A Range:
-10 %
0 %
10 %
20 %
30 %
1 10 100 1000 10000 100000
Hz Hz Hz Hz Hz Hz

MiniFlex
®
Flexible AC Current Probe 11
3.1.2 Amplitude Error - Diameter 45mm

12 MiniFlex
®
Flexible AC Current Probe
CHAPTER 4
OPERATION
4.1 Compatibility
TheMiniFlex®is compatible with any Oscilloscope, AC voltmeter, or other
voltagemeasuringinstrumentwithaninputimpedancegreaterthan1MW.
Toachievethebestoverallaccuracy,usetheMiniFlex®with an Oscillo-
scope set to AC mode with an accuracy of 0.75% or better
4.2 Tips for Making Precise Measurements
• When using the MiniFlex®with an Oscilloscope, it is important to
select the range that provides the best resolution. Failure to do this
may result in measurement errors.
• Forbest results, select the highest MiniFlex®output signal possible
and the most sensitive meter range for this output.
• MakesuretheOscilloscopeormeasuringinstrumentcanaccurately
measuremVAC.
• Forbestaccuracy, center the MiniFlex®around the conductor to be
measured.
• TheoverallmeasurementaccuracyisthesumoftheMiniFlex®accu-
racy and the displaying instrument accuracy.

MiniFlex
®
Flexible AC Current Probe 13
4.3 Making Measurements
• ConnecttheelectronicmoduletotheACVoltrangeofaOscilloscope
inputormeasuringinstrument.SelectthehighestrangeontheMini-
Flex®.
• Pressthesensor’syellowopeningdevicetoopentheexiblecoil.
• Wrap the coil around the conductor to be tested. If possible, within
range, select the lowest range to obtain the best resolution.
• Donotexceedspeciedcurrentrangefortheoutput.
• Read the displayed value on the Oscilloscope and divide it by the range
selected(i.e.ifreading=2.59Vwiththe10mV/Aoutputrange,thecur-
rentowingthroughtheprobeis2590mV÷10=259A).
• For best accuracy, carefully center the conductor inside the exible
core,andifpossible,avoidbeingintheproximityofotherconductors
whichmaycreatenoiseandinterference(particularlynearthelatch).

14 MiniFlex
®
Flexible AC Current Probe
CHAPTER 5
MAINTENANCE
5.1 Maintenance
Warning
• Formaintenanceuseonlyspeciedreplacementparts.
• Toavoidelectricalshock,donotattempttoperformanyservicing
unlessyouarequaliedtodoso.
• Toavoidelectricalshockand/ordamagetotheinstrument,donot
get water or other foreign agents into the case.
• Turn the instrument OFF and disconnect the unit from all the cir-
cuits before opening the case.
5.1.1 Battery Replacement
Thebatterymustbereplacedwhenthegreenindicatorashesorremains
off when the instrument is switched on.
• Disconnect everything connected to the instrument and set the
switch to OFF.
• Use a screwdriver to unscrew the two screws on the housing.
• Replacetheoldbatterywithanewone(9Valkalineorlithiumbat-
teryoftype6LF22).
• Closethehousing,makingsurethatitiscompletelyandcorrectly
closed,thenscrewbothscrewsbackin.
5.1.2 Cleaning
• Itisimportanttokeepthesensorlatchmatingsurfacescleanto
prevent foreign matter from entering the closing.
• The sensor may be gently cleaned with a soft cloth, soap and
water. Dry immediately after cleaning. Avoid water penetration
into the electronic module.
• Makesurethesensor,electronicmodule,andallleadsarecom-
pletely dry before any further use.

MiniFlex
®
Flexible AC Current Probe 15
Repair and Calibration
Toensurethatyourinstrumentmeetsfactoryspecications,werecommend
thatitbescheduledbacktoourfactoryServiceCenteratone-yearintervals
for recalibration, or as required by other standards or internal procedures.
For instrument repair and calibration:
You must contact our Service Center for a Customer ServiceAuthorization
Number(CSA#).Thiswillensurethatwhenyourinstrumentarrives,itwillbe
trackedandprocessedpromptly.PleasewritetheCSA#ontheoutsideofthe
shipping container. If the instrument is returned for calibration, we need to
knowifyouwantastandardcalibration,oracalibrationtraceabletoN.I.S.T.
(Includescalibrationcerticateplusrecordedcalibrationdata).
Ship To: ChauvinArnoux®,Inc.d.b.a.AEMC®Instruments
15 Faraday Drive
Dover, NH 03820 USA
Phone:(800)945-2362(Ext.360)
(603)749-6434(Ext.360)
Fax: (603)742-2346or(603)749-6309
E-mail:[email protected]
(Orcontactyourauthorizeddistributor)
Costs for repair, standard calibration, and calibration traceable to N.I.S.T. are
available.
NOTE: You must obtain a CSA# before returning any instrument.
Technical and Sales Assistance
Ifyouareexperiencinganytechnicalproblems,orrequireanyassistancewith
theproperoperationorapplicationofyourinstrument,pleasecall,mail,faxor
e-mailourtechnicalsupportteam:
ChauvinArnoux®,Inc.d.b.a.AEMC®Instruments
200FoxboroughBoulevard
Foxborough,MA02035USA
Phone:(800)343-1391
(508)698-2115
Fax: (508)698-2118
E-mail:[email protected]
www.aemc.com
NOTE: Do not ship Instruments to our Foxborough, MA address.

Limited Warranty
The MiniFlex®is warranted to the owner for a period of two yearsfrom the
date of original purchase against defects in manufacture. This limited
warranty is givenbyAEMC®Instruments, not by the distributor from whom
it was purchased. This warranty is void if the unit has been tampered with,
abused or if the defect is related to service not performed by AEMC®
Instruments.
Full warranty coverage and product registration is available on our
website at www.aemc.com/warranty.html.
Please print the online Warranty Coverage Information for your records.
What AEMC®Instruments will do: If a malfunction occurs within the warranty
period, you may return the instrument tousforrepair,providedwehaveyour
warranty registration information on file or a proof of purchase. AEMC®
Instruments will, at its option, repair or replace the faulty material.
REGISTER ONLINE AT:
www.aemc.com
Warranty Repairs
What you must do to return an Instrument for Warranty Repair:
First, request a Customer ServiceAuthorization Number (CSA#) by phone
orbyfaxfromourServiceDepartment(seeaddressbelow),thenreturnthe
instrument along with the signed CSA Form. Please write the CSA# on the
outside of the shipping container. Return the instrument, postage or shipment
pre-paidto:
Ship To: ChauvinArnoux®,Inc.d.b.a.AEMC®Instruments
15FaradayDrive•Dover,NH03820USA
Phone:(800)945-2362(Ext.360)
(603)749-6434(Ext.360)
Fax: (603)742-2346or(603)749-6309
E-mail:[email protected]
Caution: To protect yourself against in-transit loss, we recommend you insure
your returned material.
NOTE: You must obtain a CSA# before returning any instrument.

05/17
99-MAN100349v8
Chauvin Arnoux®, Inc. d.b.a. AEMC®Instruments
15FaradayDrive•Dover,NH03820USA•Phone:(603)749-6434•Fax:(603)742-2346
www.aemc.com