Thank you for purchasing an AEMC® Digital Flexbprobe.
For best results and for your safety, read the enclosed operating
instructions carefully and comply with the precautions for use.
PRECAUTIONS BEFORE USE
This instrument is protected against voltages of not more than
1000V with respect to ground in measurement CAT III or 600V in
CAT IV between the sensor and the conductor that measures the
current.
The protection provided by the instrument may be impaired if the
instrument is used other than as specified by the manufacturer.
• Do not exceed the rated maximum voltage and current or the
measurement category.
• Observe the conditions of use; temperature, relative humidity,
altitude, level of pollution, and location.
• Before each use, check the integrity of the insulation on the
sensor, cable and housing. Do not use the instrument if it is
open, damaged, poorly assembled, or if its accessories appear
damaged.
• The sensor must not be applied to or removed from uninsulated
conductors at dangerous voltages.
• Use personal protection equipment systematically.
• All troubleshooting and metrological checks must be
performed by competent and accredited personnel.
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Digital Flexprobe® Models 400D & 4000D
1.1 International Electrical Symbols
Signifies that the instrument is protected by double or reinforced insulation.
CAUTION - Risk of Danger! Indicates a WARNING and that the operator must
refer to the user manual for instructions before operating the instrument in all
cases where this symbol is marked.
Must not be applied to or removed from bare conductors at dangerous voltages.
Type B current sensor as per IEC 61010‑2‑032.
Important instructions to read and understand completely.
Important information to acknowledge.
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 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.
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.
All models include one Digital FlexProbe®, two AAA batteries and a product user manual.
1.4.1 Accessories
Multifix Multi-Position Magnetic Mounting Accessory ........Cat. #5000.44
Soft Carrying Case ..............................................................Cat. #2118.65
Model 400D-10 w/6 ft Lead
Replacement Parts
Small Classic Tool Bag (Cat. #2153.33 & 2154.34 only) .....Cat. #2133.72
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Digital Flexprobe® Models 400D & 4000D
CHAPTER 2
PRODUCT FEATURES
2.1 Description
An ideal addition to the electrician’s tool kit, the Digital FlexProbe® series
can be used for TRMS AC current measurements from 20mA to 4000A,
and are rated 600V CAT IV. They provide a welcomed solution when
accessing electrical conductors is difficult and in tight places.
Three models are available. The Model 400D, available with either a 6",
10", 60" or 120" sensor, has a measurement range starting at 20mA,
and is designed for work in residential, commercial and light industrial
applications. It can be used to check electrical distribution systems up
to 400 Amps.
The Model 4000D, available with a 14" sensor, has a measurement range
starting at 100mA and can be used on higher-power industrial installations,
as well as electrical utilities for measurements up to 4000 Amps.
Although they are high-performance instruments, the Digital FlexProbe®
series remain very simple to use: two buttons are all it takes to start the
instrument, deactivate the auto power-off, HOLD the value on the display
or store the maximum value (MAX HOLD). The values are read directly on
the built-in 4000-count display.
They are ergonomically designed for comfortable handheld use even
when bulky gloves are required. The optional articulating, magnetic
Multifix mounting system accessory makes it simple to hang on a wall,
door, table edge or clip onto a belt.
Digital Flexprobe® Models 400D & 4000D
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2.2 Control Features
1
6
0
V
I
0
V
T
A
C
1
I
0
I
I
0
0
T
V
A
C
4000 A
2
HOLD
MODEL 400
TRMS CURRENT METER
M
AX
D
P
4
5
A
6
3
1. Flexiblesensor
-Model400D(6", 10", 60", 120")
-Model4000D(14")
2. Sensoropening/closinglever
3. Shieldedlead
4. Protectivehousing
5. LCDdisplay
HOLD
Digital
FlexProbe
MAX
(>2s)
7
®
6. ON/OFFbutton
7. HOLDbutton
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Digital Flexprobe® Models 400D & 4000D
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On the back of the protective housing is a notch for the attachment of a
belt clip (optional).
With the Multifix magnetic mounting accessory, you can position your
Digital FlexProbe® anywhere, leaving both hands free. The Multifix can
be used to:
• Carry the Digital Flexprobe® on a belt
• Attach it to a metal surface using the built-in magnet
• Attach it to a door top or the edge of a table
Digital Flexprobe® Models 400D & 4000D
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CHAPTER 3
OPERATION
3.1 Measurement Principle
The flexible sensor is based on the Rogowski coil.
This principle combines:
• Excellent linearity with no saturation effect (therefore no heating)
• Light-weight (no magnetic circuit)
3.2 Use
3.2.1 Connection
• Press the yellow opening lever to open the flexible coil.
• Place the sensor around the conductor through which the current
to be measured flows (only one conductor in the sensor), then close
the sensor.
• In order to optimize measurement quality, it is best to center the
conductor in the coil and make the shape of the coil as nearly circular as possible.
• Press the
10
button to turn the instrument on.
Digital Flexprobe® Models 400D & 4000D
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3.2.2 Measurement
Read the measurement on the display. The current is given in Arms.
A
If the measurement exceeds the display capacity (4000A), the device displays 3999, blinking.
A
If the measurement is too low (see § 3.2), the device displays dashes.
A
If the edges of the signal are too steep, or its peak factor is too large, the
device displays OL.
A
3.2.3 Freezing the Measurement
If you want to freeze the display of a measurement, press the HOLD
button. The HOLD symbol is displayed.
HOLD
A
The device continues to make measurements, but the display is frozen.
To release it, press the HOLD button again.
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3.2.4 Search for Maximum
To search for a maximum, for example a spike lasting at least 100 ms,
press the HOLD (MAX > 2s) button for more than two seconds.
The Max symbol will display and the instrument will begin measuring.
M
AX
A
The Digital Flexprobe® compares each new measurement to the one
displayed. If the new measurement is greater than the old, it replaces it
in the display.
To return to the real-time display mode, press the HOLD (MAX > 2s)
button again.
3.2.5 Auto Power OFF
If there is no activity after 10 minutes, the Digital Flexprobe® turns off
automatically (unless the MAX function is active) to preserve battery life.
To deactivate the Auto Power OFF feature, press the
buttons simultaneously when turning the instrument on.
To reactivate automatic switching off, switch the device off, then back on.
and HOLD
3.2.6 Low Battery
When the battery voltage drops and the remaining battery life of the
instrument is approximately one hour, the symbol blinks on the
display.
When the battery voltage is too low to guarantee the accuracy of a
measurement, the symbol lights steadily. The batteries must then be
replaced (see § 5.2).
3.2.7 Disconnecting
Turn off the device by pressing the button. Press the yellow opening
lever to open the flexible sensor. Remove the sensor from the conductor.
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Digital Flexprobe® Models 400D & 4000D
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CHAPTER 4
SPECIFICATIONS
4.1 Reference Conditions
Quantity of influenceReference values
Temperature
Relative humidity
Frequency of the signal measured
Peak factor of the signal measured
Conductor diameter
Battery voltage
External electric field
External DC magnetic field (earth field)
External AC magnetic field
Position of the conductor
Shape of the measurement coil
centered in the measurement coil
23 ± 3°C
45 to 75% RH
40 to 65Hz
√2
≤5mm
2.8 to 3.2V
none
<40 A/m
none
nearly circular
4.2 Electrical
Model 400D-6 / 400D-10 / 400D-60 / 4000D-120
Display Range4A40A400A
Measurement Range
Measurement Range (max)
Resolution
Accuracy
0.020 to 3.999A4.00 to 39.99A40.0 to 399.9A
0.100 to 3.999A4.00 to 39.99A40.0 to 399.9A
1mA10mA100mA
±(2% + 10ct)±(1.5% + 2ct)±(1.5% + 2ct)
Model 4000D-14
Display Range40A400A4000A
Measurement Range
Measurement Range (max)
Resolution
Accuracy
Digital Flexprobe® Models 400D & 4000D
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0.20 to 39.99A40.0 to 399.9A400 to 3999A
1.00 to 39.99A40.0 to 399.9A400 to 3999A
10mA100mA1A
±(2% + 10ct)±(1.5% + 2ct)±(1.5% + 2ct)
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4.3 Variations in Range of Use
Quantity of influenceRange of influence
Battery voltage
Temperature
Relative humidity
Frequency response
Position of the conductor in the
sensor (f<400 Hz)
Adjacent conductor
carrying alternating current
Peak factor
Serial mode rejection ratio in AC
Common mode rejection, 50/60 Hz
Influence of a 50/60Hz external
magnetic field
TypicalMaximum
< 1ct
± 0.25% / 10°C
0.2%
See § 3.4
± 0.5 %
Away from opening: 55 dB
At opening: 55 dB
at 16.66Hz: ± (2 % + 1ct)
at 50Hz: ± (0.5 % + 1ct)
at 440Hz: ± (30 % + 1ct)
< 1ct
< 1ct
Housing: 43 dB
Sensor: 50 dB
Any position on the interior perimeter of the sensor
Accuracy
1.8 to 2V
0°C to 50°C
10 to 90% RH
10 to 20Hz
20 to 30Hz
30 to 400Hz
400 to 1000Hz
1000 to 3000Hz
Conductor touching the exterior
perimeter of the sensor
1.4 to 3.5 limited to 6000Apeak
0 to 400A
0 to 600Vrms
0 to 400A/m
±(2% + 1ct)
±( 0.5% / 10°C + 2cts)
± (0.3% + 2cts)
± (5% + 1ct)
± (1% + 1ct)
± (0.5% + 1ct)
± (6% + 1ct)
‑ 3 dB typical
± (1.5% ± 1ct)
Away from opening: ≥ 45 dB
At opening: ≥ 45 dB
± (6% + 1ct)
± (3% + 1ct)
Housing: ≥ 30 dB
Sensor: ≥ 40 dB
DC
—
≥50 dB
≥60 dB
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Digital Flexprobe® Models 400D & 4000D
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4.4 Typical Frequency Response Curves
(at 39AAC)
10 %
0 %
-10 %
-20 %
-30 %
-40 %
-50 %
zH 00001zH 0001zH 001zH 01
4.5 Power Supply
The device can be powered by either:
• Two 1.5V (AAA) alkaline batteries
• Two NiMH storage batteries of the same size
The nominal operating voltage is between 1.8V and 3.2V.
The battery life in continuous operation is:
• 70 hours with super-alkaline batteries
• 50 hours with NiMH storage batteries having a capacity
of 1200 mAh
The low battery condition is acknowledged by a blinking symbol on
the display. When lit steadily, the batteries must be replaced (see § 5.2).
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4.6 Environmental
Operating Temperature: 32° to 122°F (0° to 50°C)
Storage Temperature (without batteries): -4° to 158°F (-20° to +70°C)
Operating Relative Humidity: 80% RH to 122°F (50°C)
Storage Relative Humidity: 90% RH up to 113°F (45°C)
The sensor can withstand a temperature of 194°F (90°C)
Indoor use / Level of pollution: 2 / Altitude: < 2000m
The flexible coil is resistant to oils and aliphatic hydrocarbons.
4.8 Safety
Electrical safety per IEC 61010-2-032 for type B sensors.
Rated 600V CAT IV.
4.9 Electromagnetic Compatibility
Emissions and immunity in an industrial setting compliant with IEC
61326-1 for portable devices.
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Digital Flexprobe® Models 400D & 4000D
CHAPTER 5
MAINTENANCE
Use only factory specified replacement parts. AEMC
responsible for any accident, incident, or malfunction following a repair
®
will not be held
done other than by its service center or by an approved repair center.
5.1 Cleaning
Disconnect the instrument from any source of electricity.
• Use a soft cloth lightly moistened with soapy water.
• Wipe with a moist cloth and then dry with a dry cloth.
• Do not allow water or other foreign substances into the case.
• Never use alcohol, solvents or hydrocarbons.
5.2 Replacing the Batteries
Disconnect the instrument from any source of electricity.
The battery must be replaced when the symbol flashes or remains
steady on the display.
• Use a screwdriver to unscrew the two closing screws on the back of
the housing.
• Replace the old battery with a new battery
(1.5V or AAA super-alkaline batteries).
• Close the housing; make sure that it is completely and correctly
closed.
• Screw both screws back in.
Used batteries must not be treated as ordinary household waste.
Take them to the appropriate recycling collection point.
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5.5 Limited Warranty
The Digital FlexProbe® Models 400D and 4000D are warranted to the owner
for a period of one year from 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 one-year 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
5.6 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
15 Faraday Drive • Dover, NH 03820 USA