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.