AEMC Instruments MF 3000-14-1-1 HF User manual

FLEXIBLE
AC CURRENT SENSOR

MiniFlex

®

3000-14-1-1
3000-24-1-1

ENGLI

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Statement of Compl iance

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
ins

trument is 12 months and begins on the date of
receipt by the customer. For recalibration, please
use our calibration services.

al #: ___________________________

Seri
Catalog #: 2132.60/2132.63
Model #: 3000-14-1-1 / 3000-24-1-1

Please fill in the appropriate date as indicated:
Date Received: ___________________________
Date Calibration Due:

__________________

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Table of Contents

1. INTRODUCTION ........................................................................ 2

1.1 International Electrical Symbols ............................................... 3

1.2 Definition of Measurement Categories ..................................... 3

1.3 Receiving Your Shipment ......................................................... 4

1.4 Ordering Information ................................................................ 4

2. PRODUCT FEATURES ....................................................................... 5

2.1 Description................................................................................ 5

2.2 Features ................................................................................... 6

2.3 Control Features ....................................................................... 7

3. SPECIFICATIONS ........................................................................... 8

3.1 Typical Frequency Response Graphs...................................... 10

3.1.1 Amplitude Error .......................................................... 10

3.1.2 Phase Error ................................................................ 10

3.1.3 Frequency Limitation Versus Amplitude ....................... 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

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MiniFlex® Flexible AC Current Probe

CHAPTER 1

INTRODUCTION

WARNING

These

safety warnings are provided to ensure the safety of personnel

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

used only by qualified 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.

must be

 Read the safety specifications 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 c
on live conductors.

 ALWAYS connect the electronic module to the display device

before wrapping the MiniFlex

 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

1000V CAT III; 600V CAT IV.

onductors, bus bars, or near live parts. Do not wrap

®

around the sample being tested.

®

on electrical conductors rated above

®

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MiniFlex® Flexible AC Current Probe

1.1 International Electrical Symbols

manual, the symbol preceding instructions indicates that if the instructions are not

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

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

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 (de­energizing 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

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 fixed 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.

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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, file a claim immediately with the car­rier 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® Model 3000-14-1-1 .................................................. Cat. #2132.60

®

MiniFlex

Model 3000-24-1-1 .................................................. Cat. #2132.63

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MiniFlex® Flexible AC Current Probe

CHAPTER 2

PRODUCT FEATURES

2.1 Description

The MiniFlex® is a compact flexible AC current transformer composed of a
flexible sensor and an electronic module. The flexible sensor permits
measurements on conductors where standard clamp-on probes could not be
used. In particular, it can be installed in confined spaces, places where
access is difficult, or even wrapped around irregular shapes.

®

The MiniFlex
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, and cannot be damaged by overloads. The
sensor assembly is insulated for 1000V CAT III; 600V CAT IV. The Mini-

®

Flex

meets EN 61010 and is CE marked.

The MiniFlex
direct readings on DMMs, data loggers, oscilloscopes, and power or
harmonic meters. TRMS measurements are taken when connected to a
TRMS meter. The MiniFlex
component of the measured signal is measured.

is lightweight. It does not use magnetic cores like standard

®

has an mV output proportional to the current measured for

®

is insensitive to DC currents and only the AC

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MiniFlex® Flexible AC Current Probe

2.2 Features

 Measures from 0.5Arms to 3000Arms (model dependent)
 Accuracy 1% of Reading ± 0.25A
 TRMS measurements when connected to a TRMS instrument
 No core saturation or damage if overloaded
 Overrange LED indication
 EN 61010; 1000V CAT III; 600V CAT IV; CE Mark
 9V battery for typical 140 hours continuous operation
 20kHz 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

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MiniFlex® Flexible AC Current Probe

2.3 Control Features

Figure 1

1. Flexible sensor

2. Sensor opening device

3. Shielded c ord

4. BNC output connector

5. Red OL (overload) indicator

6. Green ON/OFF and Low Battery indicator

7. Range selection switch

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MiniFlex® Flexible AC Current Probe

CHAPTER 3

REFERENCE CONDITIONS

Quantity of influence

Reference v alues

Temperature

73° ± 9° F (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

≥1MΩ

ELECTRICAL

Measurement Range

3000A

Current Range

0.5A to 3000A

Output Signal

1mV/A

Frequency Range

10Hz to 20kHz with current derating

Frequency Limitation

see § 3.1 (up to 300Arams there is no frequency limitation)

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% +0.25A

Common Mode Rejection

100dB typical, 80dB min

Max peak factor

at I nominal

1.5

Residual noise at I = 0 (Arms)

0.25

Max phase shift at 50 Hz

1.5°

Max offset voltage (mVDC)

2

Max output voltage (Vpeak)

± 4.5

Output impedance (kΩ)

1

Overload

Red LED ON when output around >4.5V

Power Source

9V Alkaline, Type LF22

Battery Life

>140 hours continuous

Battery Indicator

Green LED blinks when battery needs replacement.

SPECIFICATIONS

(1)

(2)

Peak factor PF = Vpeak/Vrms

(1):
(2): The residual noise affects the measurement uncertainty according to the formula:

global uncertainty =

If the current measured is zero, the uncertainty is equal to the residual noise.

(I measured x 0.01)2 + (residual noise)

I measured

2

(I measured ≠ 0)

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MiniFlex® Flexible AC Current Probe

MECHANICAL

Module Output

10 ft. (3m) BNC cable

Module Dimensions

4.0 x 2.5 x 1.1" (103 x 64 x 28mm)

Weight with Sensor

7.76 oz. (210g)

Sensor Diameter

5mm Ø

Sensor Length

3000-14-1-1: 14" (356mm)

Max Conductor Size

3000-14-1-1: 3.93” (100mm)
3000-24-1-1: 7.5” (190mm)

Connection Cable Length (Module to
Sensor)

6ft (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

IP50 (Module)

Temperature Resistance

The flexible sensor can withstand a temperature of 194 °F (90 °C)
and is resistant to oil and Aliphatic hydrocarbons

ENVIRONMENTAL

Operating Temperature

14° to 131°F (-10° to +55°C)

Storage Temperature

-40° to 158°F (-40° to +70°C)

Influence of Temperature

Sensor:

14 to 131°F (-10° to 55°C): < 0.5% of Reading per 18°F (10°C)

Relative Humidity

10 to 90% RH: 0.1% typical, 0.3% max

Altitude

Operating: 0 to 6562 ft. (0 to 2000m), working voltage derating

Non-operating: 0 to 39,000 ft. (0 to 12,000m)

SAFETY

Double Insulation

Yes, per IEC 1010-2-32

CE Rated

Yes

Safety Rating

EN/IEC 61010-1 600 V CAT IV, 1000V CAT III,

EN/IEC 61010-2-032:2002

Pollution Level

2

Immunity and Emission

Industrial environment

Electromagnetic Compatibility

EN 61326-1

3000-24-1-1: 24” (610mm)

14° to 212°F (-10° to 100°C): < 0.5% of Reading per 18°F (10°C)

Module:

above

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MiniFlex® Flexible AC Current Probe

3.1 Typical Frequency Response Graphs

3.1.1

1 %

0 %

-1 %

3.1.2

10 °

5 °

0 °

-5 °

-10 °

-15 °

Amplitude Error

Hz

1

10

Phase Error

Hz

100

Hz

1000

Hz

10000

Hz

100000

Hz

-20 °
1

Hz

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10

Hz

100

Hz

1000

Hz

10000

Hz

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100000

Hz

11

MiniFlex® Flexible AC Current Probe

3.1.3

3500 A
3000 A
2500 A
2000 A
1500 A
1000 A

500 A

Frequency Limitation Versus Amplitude

0 A

10 Hz 100 Hz 1000 Hz 10000 Hz 100000 Hz

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MiniFlex® Flexible AC Current Probe

CHAPTER 4

OPERATION

4.1 Compatibility

The MiniFlex® is compatible with any multimeter, AC voltmeter, or other
voltage measuring instrument with an input impedance greater than 1MΩ. To
achieve the best overall accuracy, use the MiniFlex
having an accuracy of 0.75% or better.

4.2 Tips for Making Precise Measurements

When using the MiniFlex® with a meter, it is important to select the range that
provides the best resolution. Failure to do this may result i n measurement
errors.

Make sure the DMM or measuring instrument can accurately measure
mVAC. Certain inexpensive DMM have poor resolution and accuracy when
measuring low mVAC.

®

For best accuracy, center the MiniFlex
measured.

The overall measurement accuracy is the sum of the MiniFlex
the displaying instrument accuracy.

around the conductor to be

®

with an AC voltmeter

®

accuracy and

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MiniFlex® Flexible AC Current Probe

4.3 Making Measurements

1. Connect the electronic module to the AC Volt range of a multimeter or
measuring instrument. Select the highest range on the MiniFlex

COM

+

®

.

2. Press the sensor’s yellow opening device to open the flexible coil.

3. Wrap the coil around the conductor to be tested. If possible, within
range, select the lowest range to obtain the best resolution.

4. Do not exc eed specified current range for the output. Do not use on
selected range if overload LED goes on.

5. Read the displayed value on the multimeter and divide it by the range
selected (i.e. if reading = 2.59V with the 1mV/A output range, the cur­rent flowing through the probe is 2590mV = 2590A).

6. For best accuracy, carefully center the conductor inside the flexible
core, and if possible, avoid being in the proximity of other conductors
which may create noise and interference (particularly near the latch).

®

7. True RMS measurements are obtained when the MiniFlex

is
connected to a True RMS meter. Note that the DC component is not
measured.

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MiniFlex® Flexible AC Current Probe

5.1 Maintenance

CHAPTER 5

MAINTENANCE

Warning

 For maintenance use only specified replacement parts.
 To avoid electrical shock, do not attempt to perform any servicing

unless you are qualified 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 circuits

before opening the case.

5.1.1

The battery must be replaced when the green indicator flashes or remains off
when the instrument is switched on.

 Disconnect everything connected to the instrument and set the

 Use a screwdriver to unscrew the two screws on the housing.
 Replace the old battery with a new one (9V alkaline or lithium bat-

 Close the housing, making sure that it is completely and correctly

Battery Replacement

switch to OFF.

tery of type 6LF22).

closed, then screw both screws back in.

5.1.2

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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.

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MiniFlex® Flexible AC Current Probe

Repair and Calibration

To ensure that your instrument meets factory specifications, 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 certificate plus recorded calibration data).

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MiniFlex® Flexible AC Current Probe

Limited Warranty

The MiniFlex® is warranted to the owner for a period of two years from the
date of original purchase against defects in manufacture. This limited warranty
is given by AEMC
chased. 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, not by the distributor from whom it was pur-

®

Instruments.

Please
What AEMC

print the online Warranty Coverage Information for your records.

®

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.

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:

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.

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Notes:

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11/17

99-MAN 100454 v2

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