Magnet-physik EF 14 User manual

BA - No.: 100514EBA02
Emil-Hoffmann-Strasse 3
50996 Cologne
Germany
Operating Instructions
Electronic Fluxmeter
EF 14
Preserve for future application!

Electronic Fluxmeter EF 14
BA
–
no.: 100514EBA02
December 9
th
, 2020
Page
2
Introduction
Dear customer,
You have decided on a high-quality product from MAGNET-PHYSIK. We are convinced that
our product will be a valuable help in your daily work. Condition is that the operating
instructions are read carefully and observed. We will not take over any warranty or liability in
case of deliberate faulty operation or disregard of our safety notes.
If you face any problems while working with the equipment or the operating instructions or if
you have any proposals for improvements please do not hesitate to contact us.
Purpose
The operating instructions provide an overview of applications and functions of the Electronic
Fluxmeter EF 14.
Target group
The operator and the owner of the device will find all the necessary information to operate this
device in the following pages.
Manufacturer
MAGNET-PHYSIK,
Dr. Steingroever GmbH
Emil-Hoffmann-Str. 3
50996 Cologne
Germany
Tel. 02236 / 3919-0
Fax. 02236 / 3919-19

Electronic Fluxmeter EF 14
BA
–
no.: 100514EBA02
December 9
th
, 2020
Page
3
Note
 These operating instructions do not include all detailed information on the product nor do
they consider every possible set-up, operation or installation as this would be too extensive.
 Should you require further information or if particular problems arise which have not been
dealt with comprehensively in the operating instructions then the required information will
be supplied by MAGNET-PHYSIK.
 We would also like to point out that the contents of these instructions are not part of a
previous or existing arrangement, agreement or legal relationship, nor are they a
modification of the same. All obligations on the part of MAGNET-PHYSIK are explicitly
stated in the sales contract which contains the complete and only valid warranty clauses.
These warranty clauses are neither extended nor limited by implementation of these
instructions.
 MAGNET-PHYSIK GmbH, Köln 100514EBA02/2020
Passing on and reproduction of these documents, and utilization
and disclosure of their contents is prohibited unless specifically
authorized. Violations shall be cause for damage liability.
All rights reserved.
Subject to alterations
Although the contents of this publication have been checked for
agreement with the hardware and software described, we do not
accept liability for total agreement since differences cannot be
completely excluded. The information in this publication is
checked at regular intervals and necessary corrections included in
the next release. Your suggestions for improving this publication
are welcome.

Electronic Fluxmeter EF 14
BA
–
no.: 100514EBA02
December 9
th
, 2020
Page
4
Table of Contents
1 General Information .................................................................................................... 6
1.1 Safety Instructions ............................................................................................... 6
1.1.1 Intended Purpose ............................................................................................. 7
1.1.2 Sources of Danger ........................................................................................... 7
1.1.3 Authorized Operator ........................................................................................ 8
1.1.4 Place of Installation ......................................................................................... 8
1.1.5 Safety Checks .................................................................................................. 9
1.1.6 Emergency Measures ....................................................................................... 10
1.2 Instrument Description ........................................................................................ 10
1.3 Specifications ....................................................................................................... 10
1.4 Ambient Conditions ............................................................................................. 12
2 Taking Into Operation ................................................................................................. 14
2.1 Unpacking and Checking ..................................................................................... 14
2.2 Packing for Dispatch ............................................................................................ 14
2.3 Plug Connections ................................................................................................. 14
2.4 Connecting and Start ............................................................................................ 15
3 Operation ....................................................................................................................... 18
3.1 Display ................................................................................................................. 18
3.2 Keypad ................................................................................................................. 19
4 Device Functions ........................................................................................................... 21
4.1 Reset ..................................................................................................................... 21
4.2 Max./Min. ............................................................................................................ 21
4.3 Peak ...................................................................................................................... 22
4.4 Drift ...................................................................................................................... 23
4.5 Unit ...................................................................................................................... 24
4.6 Limit ..................................................................................................................... 25
4.7 AC/DC ................................................................................................................. 26
4.8 Range ................................................................................................................... 26
4.9 Coil ....................................................................................................................... 26
4.10 Var. ...................................................................................................................... 29
4.11 Measuring Data Memory ..................................................................................... 30
4.12 Mode Menu .......................................................................................................... 31
4.12.1 Save Coil .......................................................................................................... 31
4.12.2 Load Coil ......................................................................................................... 31
4.12.3 Information ...................................................................................................... 32
4.12.4 Contrast ............................................................................................................ 32
4.12.5 RS 232 ............................................................................................................. 33
4.12.6 Send Data ......................................................................................................... 33
4.12.7 Set Local .......................................................................................................... 33

Electronic Fluxmeter EF 14
BA
–
no.: 100514EBA02
December 9
th
, 2020
Page
5
5 Operating Information ................................................................................................. 34
5.1 Input Resistance and Coil Resistance .................................................................. 34
5.2 Measurement of the Maxima of Magnetizing Impulses ...................................... 35
5.3 AC Measuring Operation ..................................................................................... 36
5.4 Measuring Rate .................................................................................................... 37
6 Remote Control ............................................................................................................. 39
6.1 Serial Interface ..................................................................................................... 39
6.2 Basic Commands ................................................................................................. 40
6.3 Read and Write Commands ................................................................................. 40
6.3.1 Measuring Commands ..................................................................................... 40
6.3.2 Measuring Modes ............................................................................................ 42
6.3.3 Instrument Functions ....................................................................................... 43
6.3.4 Limit Commands ............................................................................................. 44
6.3.5 Coil Data Commands ....................................................................................... 45
6.3.6 Interface Commands ........................................................................................ 47
7 Pin Assignments of Plugs and Sockets ........................................................................ 49
7.1 Measuring Coil Connections ............................................................................... 49
7.1.1 Input Socket on the Front Panel ...................................................................... 49
7.1.2 Pole Clamps on the Rear Panel ........................................................................ 50
7.2 RS 232 Interface .................................................................................................. 50
7.3 Multi-functional Socket ....................................................................................... 51
7.3.1 Limit Relays .................................................................................................... 52
7.3.2 Digital Control Lines ....................................................................................... 52
7.3.3 Analog Outputs ................................................................................................ 52
8 Maintenance .................................................................................................................. 54
8.1 Maintenance Plan ................................................................................................. 54
8.2 Checking for Damage .......................................................................................... 54
8.3 Calibration ........................................................................................................... 54
8.4 Troubleshooting ................................................................................................... 54
8.5 Taking Out of Operation ...................................................................................... 55

Electronic Fluxmeter EF 14
BA
–
no.: 100514EBA02
December 9
th
, 2020
Page
6
1 General Information
This chapter gives an introduction to the fluxmeter EF 14. The EF 14 is a multi-purpose, fully
equipped electronic fluxmeter. Depending on the measuring coil attached, various
measurements can be carried out.
If you have just received your EF 14, make sure you familiarize yourself with the safety
instruction in this chapter and the instructions for taking the EF 14 into operation in chapter 2.
The complete and detailed user information on the instrument and the measuring modes can be
found in chapters 3, 4 and 5. Chapter 6 deals in detail with the remote control of the EF 14 by
means of the serial interface. The connectors of the EF 14 are described in chapter 7.
1.1 Safety Instructions
The following general safety measures must be adhered to at all times when the device is in use,
being serviced or being repaired. Failure to observe these measures, or warnings given in other
parts of these instructions, may influence the safety standards of the construction. MAGNET-
PHYSIK Dr. Steingroever GmbH, Cologne, will accept no responsibility should the customer
neglect the prescribed safety instructions.
Special safety instructions, whose non-observance may lead to injuries and/or property damage,
as well as important hints, are marked within these operating instructions as follows:
Danger!
Means that serious bodily injury resulting in death or considerable material
damage may occur if the appropriate safety measures are not taken.
Warning!
Means that serious bodily injury or considerable material damage may occur
if the appropriate safety measures are not taken.
Caution!
Means that light bodily injury or material damage may occur if the
appropriate safety measures are not taken.
Important!
Indicates important information which is to be paid particular attention.

Electronic Fluxmeter EF 14
BA
–
no.: 100514EBA02
December 9
th
, 2020
Page
7
1.1.1 Intended Purpose
Important!
It must be explicitly stated that the Electronic Fluxmeter EF 14 is to be used
only for its intended purpose.
The intended purpose of the EF 14 is the measurement of magnetic flux
and quantities that can be derived from this, by means of measuring
coils.
Every application not in accordance with this intended purpose is prohibited
and implies the deliberate dealing with non-calculable risks for both the
operator as well as the equipment.
Unauthorized reconstruction of and/or alterations to the equipment are
forbidden for safety reasons!
The instructions as stipulated in this operating manual for operation and installation are to be
strictly observed!
1.1.2 Sources of Danger
Danger!
To minimize the danger of electric shock the device casing must always be
grounded. The device must be connected to an approved 3-pole socket using
a 3-wire power cord. Care must be taken that the grounding wire is securely
connected to an electrical ground (PE).
Danger!
Under no circumstances the instrument must come into contact with liquid
mediums, such as water, oil, etc. If in spite of all precautions taken, such a
medium comes into contact with the electronics of the EF 14, there is
considerable danger for the operation of the device. In this case the device
must be shut down immediately.
The equipment must always be switched off when being cleaned.
Never clean with water! Use dry cloths only for cleaning!
Danger!
The measuring coil must never be brought into contact with an electrical
voltage conductor. The sleeve or paint on the coil surface is not an electrical
insulation. Disregard of this warning can cause danger to life of the user.
Additionally the device and the coil can be damaged.

Electronic Fluxmeter EF 14
BA
–
no.: 100514EBA02
December 9
th
, 2020
Page
8
Danger!
Do Not Operate In An Explosive Atmosphere
Do not operate the instrument in the presence of flammable gases or fumes.
Operation of any electrical instrument in such an environment constitutes a
definite safety hazard.
Caution!
Keep Away From Live Circuits
Operating personnel must not remove instrument covers. Component
replacement and internal adjustments must be made by qualified
maintenance personnel. Do not replace components with power cable
connected. To avoid injuries, always disconnect power and discharge
circuits before touching them.
Caution!
Do Not Substitute Parts Or Modify Instrument
Due to the risk of electrostatic discharge and because of the danger of
introducing additional hazards, do not install substitute parts or perform any
unauthorized modification to the instrument. Return the instrument to
MAGNET-PHYSIK Dr. Steingroever GmbH, Cologne, Germany or an
authorized representative for service and repair to ensure that safety features
are maintained.
1.1.3 Authorized Operator
The EF 14 may only be used and connected by personnel authorized by owner.
The owner must in this case:
 place operating instructions at the operator's disposal at all times and
 make sure the operator has read and understood them.
1.1.4 Place of Installation
No special safety measures are necessary at the place of installation.
Important!
The EF 14 must always be placed on a solid base, e.g. a table.
Never operate the equipment in places where one or more of the limiting
values for t
he ambient conditions are exceeded.

Electronic Fluxmeter EF 14
BA
–
no.: 100514EBA02
December 9
th
, 2020
Page
9
1.1.5 Safety Checks
All safety checks as described here must be carried out regularly and carefully. Please use the
checklist “General Check” for safety checks
Check Intervals:
 Once a year and
 after every repair
Contents of check:
 specified condition  specified function
Table 1: Checklist for safety check
General Check and Functional Tests
General Check:
Switch off the device and disconnect it from mains power supply.
Visual control check of instrument casing
undamaged
Visual control check of connection cables
undamaged
Functional test:
Before functional test the device must be connected to mains power supply.
EF 14
switch on
with power switch
Display
Display lights up
EF 14
switch off
with "Power Off"
-
key
Display
extinguishes
Check Date:________________ Operator (Signature): ________________________
Important!
We recommend having the instrument and, if appropriate, the measuring
coils periodically recalibrated to ensure traceability of the measuring results.
The suitable recalibration interval depends on the operating conditions and of the quality
management stipulations of the owner. Intervals of one to two years are usual, depending
whether the instrument is continuously used in rough production environment or from time to
time under laboratory conditions.

Electronic Fluxmeter EF 14
BA
–
no.: 100514EBA02
December 9
th
, 2020
Page
10
1.1.6 Emergency Measures
In the case of emergency, when all safety instructions fail, disconnect the device from the
power supply and proceed as follows:
Important!
Take emergency measures, such as “First-aid“, securing the device and
work place against further use and finally write the case report.
1.2 Instrument Description
The EF 14 is easy to operate via the front panel keys and has an easily readable LC display. The
alphanumerical display allows user control supported by help texts.
To use the EF 14, a suitable measuring coil must be connected to the input. The following coil
types are most frequently used:
 Field measuring coils, often also called search coils, are used for the measurement of the
magnetic field strength or flux density at the pole faces or in air gaps of magnet systems.
They have defined area turns, usually given in cm². Field measuring coils with particularly
small dimensions are also referred to as point coils. To measure the flux density in the air
gap of loudspeaker systems, stray field compensated coils are used.
 Potential measuring coils are required to measure magnetic potentials on magnets or
magnet systems. The measuring results can be used to determine where losses occur in a
magnet system. Furthermore the inner field strength of a magnet can be determined with a
potential measuring coil.
 Moment measuring coils, particularly Helmholtz coils, allow the determination of the
magnetic moment, dipole moment and polarization of two-pole magnetized components of
hard magnetic materials. Measurement with a moment coil is a particularly fast method
which is frequently employed in quality control. The combination of a moment measuring
coil with a field generating system is referred to as a saturation coil. It can be used to
determine the saturation polarization of soft magnetic materials.
 Surrounding coils are used to measure the magnetic polarization of permanent magnets or
soft magnetic magnetized parts. They are mostly used in measuring systems like the
PERMAGRAPH® or the REMAGRAPH® to record the magnetization curve.
The EF 14 is a highly sensitive electronic measuring instrument for the measurement of
magnetic flux. For this reason the measuring results may be influenced by electromagne-
tic stray fields.
1.3 Specifications
Measuring input: 15 pole Sub-D socket on the front panel, pole clamps on the rear
panel (alternately usable)
Input resistance: 100 k

Electronic Fluxmeter EF 14
BA
–
no.: 100514EBA02
December 9
th
, 2020
Page
11
Max. input voltage: 40 V
Resolution: 10-7/10-6/10-5/10-4 Vs
Range limits: ±2250·10-4 Vs, ±9999·10-5 Vs, ±9999·10-6 Vs, ±9999·10-7 Vs
Display resolution 4 digits
Accuracy: DC: 0.5 % of reading ± 0.01 % of range ± 5 · 10-7 Vs
AC: 10 Hz - 5 kHz: 5 % of reading (see also chapter 5.3)
Precision (reproducibility): DC: 0.2 % of range
Measuring rate: Display: approx. 2.7 measurements per second
Interface: up to approx. 120 measurements per second
Extreme values: |Max|, Max, Min, Max-Min, Peak for impulses
Limit comparator: 2-fold, relay output, display: Low, OK, High
Measurement memory: Memory for up to 100 values. The stored values are kept in
memory if the instrument is switched off. They can be read from
the display and the computer interface.
Coil data memory: Memory for up to 10 coil data sets. The values are kept in
memory when the instrument is switched off.
Display: Backlight LCD, 128 x 64 dots
Analog output: Real analog, ±1 Volt in all ranges
Computer interface: RS 232C
Operating temperature +10 °C to +35 °C
Line power: AC 90 - 250 V, 50 - 60 Hz, 5 Watt
Dimensions: 248 mm (width) x 180 mm (depth) x 100 mm (height)
Weight: Approx. 1.5 kg
Fig. 1.4.1: EF 14 Front View

Electronic Fluxmeter EF 14
BA
–
no.: 100514EBA02
December 9
th
, 2020
Page
12
1.4 Ambient Conditions
Table 1.5.1: Electromagnetic Tolerance (EMV)
Immunity from discharge of static electricity:
based on EN 61000-4-2
Air discharge: 8 kV
Contact discharge: 4 kV
Immunity from incident high frequency:
based on EN V 50141
0.15 to 80 MHz
10 V
80 % AM (1 kHz)
Table 1.5.2: Details on IEC- / VDE-Safety
Measurement of insulation based on VDE 0160 (05.88):
between electrically independent circuits and with a central
grounding point for connected circuits
- Testing voltage
at a rated voltage of the circuit (AC/DC)
Ue = 0...50 V
500 V, sinus, 50 Hz
Safety test: IEC 204-1;
VDE 0113 Part 1 (06.93)
Table 1.5.3: Climatic and mechanical ambient conditions
Temperature: - for operation 10 °C to 35 °C
- for storage and transport Class 1K4 according to DIN EN 50178
-10 °C to 55 °C
Relative humidity: - for operation Class 3K3 according to DIN EN 50178
5 % to 85 %, no dew, 1 g/m3 to 25 g/m3
- for storage and transport Class 1K3 according to DIN EN 50178
5 % to 95 %, no dew, 1 g/m3 to 29 g/m3
Atmospheric pressure - for operation Class 3K3 according to DIN EN 50178
86 kPa to 106 kPa
- for storage Class 1K3 according to DIN EN 50178
86 kPa to 106 kPa
- for transport Class 2K3 according to DIN EN 50178
70 kPa to 106 kPa

Electronic Fluxmeter EF 14
BA
–
no.: 100514EBA02
December 9
th
, 2020
Page
13
Toxic substances: - SO2  0,5 ppm
(rel. moisture  60%, no dew)
- H2S  0,1 ppm
(rel. moisture  60%, no dew)
Oscillations: acc. to IEC 68-2-6
10 ... 57 Hz (const. amplitude 0.15 mm),
57 ... 150 Hz (const. acceleration 2g)

Electronic Fluxmeter EF 14
BA
–
no.: 100514EBA02
December 9
th
, 2020
Page
14
2 Taking Into Operation
This chapter gives general instructions on setting up the EF 14 fluxmeter. Instructions for
unpacking the instrument are given in chapter 2.1. Packing the device for dispatch is described
in chapter 2.2. The plug connections are described in chapter 2.3. Finally chapter 2.4 provides
instructions on how to put the device into operation.
2.1 Unpacking and Checking
Check the packaging for signs of damage. Any correspondence regarding damage (evident or
hidden) or partial loss of the consignment must be made in written form immediately after
receipt of goods. Please also inform the freight forwarder immediately.
Open the packaging. A packing list is enclosed which allows you to check that the device,
accessories and operating instructions have been received. Use the packing list to check that all
parts of the device have been unpacked. Check for damages. Make sure everything has been
removed before discarding the packaging.
If the device has been damaged in transit make sure the forwarder and insurance are informed.
Inform Magnet-Physik of the same. If there are parts or accessories missing, let Magnet-Physik
know immediately. MPS cannot accept responsibility for any missing parts if not informed
within 60 days from date of dispatch.
2.2 Packing for Dispatch
If it becomes necessary to send in the EF 14, coils or other accessories for calibration, repair or
replacement, inform Magnet-Physik before sending the parts. If an instrument is being sent in
for service, the following information is required before the repair can be started:
 Device name and serial number
 User name, company, address, e-mail address and telephone number
 Description of fault
 Description of the measuring coil used
 Description of test arrangement.
The original packaging should be used for dispatch. If this is no longer available, use a stable
cardboard or wooden box and mark it “fragile” or “sensitive electronic equipment”. If the EF 14
is shipped together with a measuring coil, pack it in a way that instrument and coil cannot
damage each other. Do not place heavy measuring coils onto the EF 14.
2.3 Plug Connections
The socket for the measuring coil connection is located on the front panel of the instrument. On
the rear side, pole clamps for measuring coil connection, a plug for the serial interface, a socket

Electronic Fluxmeter EF 14
BA
–
no.: 100514EBA02
December 9
th
, 2020
Page
15
for various in- and outputs and the line power supply socket with fuse and main switch are
installed.
Details on the pin configuration of the sockets are given in chapter 7.
Measuring coil connection: the 15-pole socket for the measuring coil connection is located on
the front panel. The coil connecting plug must be lined up with the socket and carefully bound
to prevent the contacts being bent. It should be fastened using the two screws. A tight
connection prevents the connector being pulled out unintentionally and reduces disturbances by
drift.
The connector can be plugged and unplugged without switching off the instrument. However, it
should not be unplugged immediately after it has been plugged in (within about 2 seconds).
On the rear panel of the instrument you can find a pair of pole clamps, where coils with bunch
or banana plugs can be connected or wires can be clamped.
Important!
Only one measuring coil must be connected at one time, either to the socket
on the front panel or to the clamps on the rear panel. If both connections are
used at the same time, this will cause faulty measurements.
RS 232 plug: The 9 pin Sub-D plug has the connections for RS 232 interface. The EF 14 can be
connected to a computer using a so-called Null-Modem-Cable.
I/O socket: This 25 pole socket has multiple functions. It contains the relay output for the limit
function, the analog output and digital control lines.
Power supply element: The power supply socket with fuse and On/Off switch is the input for
the AC power supply. The power supply connection cable is attached to the power supply
socket.
2.4 Connecting and Start
The following procedure describes how the device is put into operation. It serves to check the
basic functions of the device before being used for measurements.
Caution!
Check that the power line has the correct voltage before you connect the
device to the system. The device can be damaged if connected to the wrong
voltage! The EF 14 works with 90-250 V alternating voltage.
1. Make sure that the ON/OFF switch is at OFF (0).
2. Connect the coil plug to the input socket. Use the screws to fix the plug to the instrument.
Alternatively you can use the pole clamps on the rear panel. Always only connect one coil.
3. Make sure all other necessary connections have been made before switching on the device
e.g. interface or analog output.

Electronic Fluxmeter EF 14
BA
–
no.: 100514EBA02
December 9
th
, 2020
Page
16
4. Connect the power cable to the instrument and to a power socket.
5. Switch on the instrument (I). The display lights up and the Magnet-Physik logo briefly
appears.
6. If a coil is connected to the front input, the measuring display appears. A typical example is
as follows:
If the coil is connected to the rear input clamps, the following display appears:
In this case, press the Reset key to activate the measuring display for the rear input. The
word rear behind the coil type shows, that the EF 14 assumes a coil at the rear clamps.
To obtain the best results the instrument must warm up for about 20 minutes. The coil plug
and the input socket shall have the same temperature to avoid drift due to thermo voltages.
7. Press the Drift key on the front panel to start the automatic drift correction. The following
display appears:
If the device has functioned properly up to now, it is in order. If you have a field measuring
coil and a reference magnet you can continue with the test by using them to check the
accuracy of the EF 14.

Electronic Fluxmeter EF 14
BA
–
no.: 100514EBA02
December 9
th
, 2020
Page
17
8. If you proceed with such a test, make sure that a suitable measuring range is selected. Use
the range key to set the right measuring range.
Caution!
The measuring coils must be treated with care. They may be fragile.
Important!
The test result with a field coil depends on the angle between the coil and the
magnetic potential lines. The greater the angle is between the coil and
magnetic potential lines, the greater will be the percentage error. For
example: A 5° angle produces an error of 0.4%, a 10° angle produces an
error of 1,5%.

Electronic Fluxmeter EF 14
BA
–
no.: 100514EBA02
December 9
th
, 2020
Page
18
3 Operation
The basics for operation of the EF 14 fluxmeter are described here. A description of all the
elements of display in measuring operation (standard display) is to be found in chapter 3.1. An
overview of the keys and their functions is given in chapter 3.2.
3.1 Display
Fig. 3.1.1: Display in measuring operation
In measuring operation the actually measured value is shown in the center of the display in
large numbers. It is the numerical value with a maximum of four digits and the unit.
The two bottom lines provide various information:
1. Measuring mode: AC or DC
2. Limit state: Low, OK, High. Therefore the Limit function must be switched on.
3. Coil type: The type of the connected measuring coil, Field Coil in the example.
4. Coil constant: Constant of the connected measuring coil, k = 100 cm² in the example.
If the Var. function is switched on, this is shown instead of the coil constant.
Remote mode: If the EF 14 is controlled remotely via the serial interface and the keypad is
locked, this is assigned by an R in the upper right corner of the display.
If the Max./Min. function is switched on, the values measured with this function are shown in
the line below the main measured vale.
If the Peak function is switched on, the largest peak value is shown, independently of its sign,
in the center of the display in large numbers. Below this, the largest value with opposite sign is
shown.
Values that are stored in the data memory are shown in the upper left corner of the display.
The unit behind the actual measured value is valid for all displayed values.

Electronic Fluxmeter EF 14
BA
–
no.: 100514EBA02
December 9
th
, 2020
Page
19
3.2 Keypad
There is a numerical keypad for the input of numbers. It consists of the digit keys 0 to 9, the
(+/-) key and the decimal point. Numerical inputs are rounded to 7 significant figures.
You can change the most important instrument settings directly using the keys. The functions
are indicated above the keys.
Only a brief description of the key functions will be given here. You can find detailed
descriptions in Chapter 4.
Reset Sets the display back to zero in DC mode and clears all captured Max., Min.
and Peak values.
Max./Min. Captures the highest and if applicable lowest measured value.
Peak Switches the measurement of fast pulses on and off.
Drift Starts the automatic drift correction of the EF 14 (only in DC mode).
Unit This key is pressed to show the selectable units. The selection available
depends on the connected measuring coil.
Limit The values for the limit function (comparator) and the switching thresholds
for the limit relays are input here.
Range The measuring range can be selected in this menu.
Coil Coil type and coil parameters can be input here if coils without an own data
memory are connected to the EF 14.
Var. The test value can be multiplied or divided by a constant numerical value
when this function is selected.
Mode This key switches between the measuring display and a selection for further
menus and functions.
The arrow keys and the keys Enter and Delete have different functions, whether the measuring
display or a menu is active.
In the measuring display:
Enter Save the actual measured value to the data memory. The saved value is shown
in the upper left corner of the display.
← → The arrow key are used for navigation in the data memory.
Delete Deletes the value shown in the upper left corner from the data memory.
In a menu:
Enter The inputs shown on the display are accepted.
← → The arrow keys are used to move the selection cursor. The selection is shown
inverted.
Delete This key is used to delete a numerical value. The cursor indicates the number
to be deleted.

Electronic Fluxmeter EF 14
BA
–
no.: 100514EBA02
December 9
th
, 2020
Page
20
Escape This key is used to discontinue an input without changing the previously set
values.
In the single menus it is indicated which keys can be used for inputs. The keys Enter, Mode
and Escape are nearly always available. These keys have the following functions:
With Enter you complete the current input. Following the last input in a menu you leave with
Enter.
Pressing the Mode key you will return immediately from the menu to the measuring operation.
The last input is accepted.
With Escape you go back one step in an input dialog without accepting the latest input.