Twilight MP-2000 User manual

Medidor de Campo Magnético MP-2000 con
sonda de campo transversal P-T4, List Magnetik
LM-MP2000

OPERATION MANUAL
MAGNETIC FIELD METER
MP-2000
Firmware Version 15.1 and up
2022-03

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TABLE OF CONTENTS
MP-2000 (2022-03
Introduction .................................................................. 3
Warnings and hazard information ................................. 4
Operation with Measuring dummy – Safety Instruction ...................... 4
Quick Start ..................................................................... 5
Important Notes ............................................................ 5
Retention of Stored Values when changing Battery ................................................................... 5
Power Supply ......................................................................................................................... 5
Checking the Batteries or Rechargeable Batteries ..................................................................... 6
Automatic Power-Off ............................................................................................................... 6
Changing the Probe ................................................................................................................ 6
Measuring Range Exceedance ................................................................................................. 6
Functions of the Operating Keys ................................... 7
Menu Operation ............................................................. 8
- - Key – Zero Point Setting .................................................................................................... 8
MEM Key – Save Measured Value ............................................................................................ 8
MENU Key ....................................................................................... 8
DC / AC / Peak Selection .................................................................. 8
DC Auto Range ....................................................................................................................... 8
DC Low Range and DC High Range .......................................................................................... 9
AC-RMS Auto Range ............................................................................................................... 9
Peak Low Range (P1) and Peak High Range (P2) ...................................................................... 9
Display ........................................................................................... 1
Digital ...................................................................................................................................1
Statistic .................................................................................................................................1
Analogue ...............................................................................................................................1
Batch ............................................................................................. 11
Display / Select......................................................................................................................11
Delete ...................................................................................................................................11
Max. Batch No. ......................................................................................................................11
Print + PC ...................................................................................... 12
Transmit to PC ......................................................................................................................12
Transmit to Printer.................................................................................................................12
Transmit Online .....................................................................................................................12
Setup ............................................................................................. 13
Select Language ....................................................................................................................13
Adjust LCD-Contrast ..............................................................................................................13
Select measuring Unit (Gauss – mT – A/cm – kA/m) ................................................................13
Automatic Switch-Off .............................................................................................................13
Display battery voltage ..........................................................................................................14
Reset ....................................................................................................................................14
Applicable Measuring probes ....................................... 15
Checking MP-2000 with Calibration Standard ............. 16
Using the analog probe P-T4A Analog-Output ............ 17
Technical Data ............................................................. 18

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Optional ....................................................................... 19
TOP-PRINT4 Thermal Data Printer ................................................... 19
Available Applications ...................................................................... 2
MP-2 TRANSFER ..............................................................................................................2
TRANSFER ............................................................................................................................2

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I NTRODUCTION
We have made every effort to make this operating manual as short and as clear as
possible.
Nevertheless, if you should have any questions about operation, please contact our
competent service technicians, who are always ready to help. They will be pleased to
assist you.
With the magnetic field meter List-Magnetik MP-2000, we offer you a first class,
high-end product, with externally connectable axial and tangential field probes. With
the easy to use device, you can precisely measure magnetic DC and AC fields as well
as pulse fields of all kinds. The range of application ranges from the earth's magnetic
field to a field strength of 4 , A/cm, switchable in Gauss/Oersted and Tesla. The
built-in data logger, the combined digital and analog display as well as the optional
data transfer via USB, allows flexible use.
Especially at high magnetic field strengths, an absolutely interference-free and pre-
cise measurement is required. For this reason, a microcontroller digitizes and linear-
izes the analog measuring signals of the Hall sensor into the probe in the measuring
probes of the MP-2000.
The fast peak value memory allows measurements in pulse fields from .1 milli-
seconds. In addition, an oscilloscope for the representation of dynamic magnetic
fields can be connected via the special probe P-T4A with analog output.
A further advantage is that the probe cable can be plugged in on both sides connects
the display unit and the probe and can be easily replaced in the event of a cable
break.
The universally applicable MP-2 tests for residual magnetism, measures magnetic
fields of all types and locates stray detectors for crack detection.
The device has six display ranges:
DC field: -2 A/cm, 2 -1 , A/cm, 1, -4, kA/m
AC field: -2 A/cm, 2 -1 , A/cm, 1, -4, kA/m
(1 A/cm = .1 kA/m = 1.256 Gauss (Oersted) = .1256 mT)
Display range switching takes place automatically.
Applicable measuring probes:
Measuring range up to 2 , A/cm
Axial probes P-A2 and P-W2 (angular axial probe)
Tangential probes P-T2 and P-Z2 (flexible reed probe)
Additionally, in measuring range up to 4 , A/cm
Axial probe P-A4
Tangential probes P-T4, P-Z4 and P-T4A Analog-Output
A calibration standard is available on request for checking the calibration of the
device.

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W ARNINGS AND HAZARD INFORMATION
List-Magnetik expressly advises that the MP-2 magnetic field measurement device may
only be used for its proper intended purpose: the measurement of magnetic fields. Any other
use is impermissible and involves the deliberate involvement of incalculable risks for the de-
vice and the operator.
The device operating company must ensure that it is only
used by personnel who have access to these operating in-
structions and who have read and understood them.
The device and the sensor must not be brought into contact
with electrical power sources that are not adequately insulat-
ed, under any circumstances. Disregard of this warning can
result in a fatal hazard for the operator.
Although the device is splash-proof, it is not waterproof.
The device must not be submerged in water or other liquids
or cleaned with water. If the device comes into contact with a
liquid medium, it must be switched off immediately.
Do not use the device in a potentially explosive environment
(smoke, gases).
The use of any electrical device, even this battery-operated
measurement device, can result in an explosion.
The device must only be opened to replace the battery. Do
not carry out any repairs to the electrics yourself. Instead,
send the device to us for diagnostics in the event of a fault
.
OPERATION WITH MEASURING DUMMY – SAFETY INSTRUCTION
If you are using the MP-2 with a special measuring dummy instead of a probe for
the measurement in a magnetizing system, be sure to observe the following safety
instructions:
The complete measuring unit with MP-2 , measuring
dummy and connection cable may only be operated behind
the closed and locked protection door at the magnetizing coil,
according to Performance Level PLe ISO 13849.

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Q UICK S TART
•Connect the probe cable to the measuring probe and device.
•Switch on the MP-2000 with the ON-OFF key. Automatic zero balancing
takes place when the device is switched on, therefore the probe should not be
in a magnetic field when doing so. The last measured value appears briefly on
the display, followed by the current measured value.
•To change the language (German is pre-set) press the MENU key:
DC/AC/PEAK Sprache >>>> Deutsch
Anzeige LCD-Kontrast Englisch
Speicher Messeinheit Spanisch
Drucken+PC Autom.Abschaltung Niederlaend.
Einstellung >>>> Bat.Spannung
Reset
Scroll through the menu using the arrow keys, confirm your selection using
the OK key.
I MPORTANT N OTES
R ETENTION OF S TORED V ALUES WHEN CHANGING B ATTERY
The stored measured values are retained even after switching off the device or
storing it without a battery.
P OWER S UPPLY
The device is supplied as standard with three 1.5 V (Mignon) batteries. However, it
can optionally be powered by three 1.2 V NiCd rechargeable batteries. A suitable
charger is available from the factory and is connected to the serial interface.
Charging time: 8 – 1 hours.
The charger can also remain permanently connected!

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C HECKING THE B ATTERIES OR R ECHARGEABLE B ATTERIES
The batteries must be replaced or the rechargeable batteries charged up as soon as
only 1 bar appears on the battery display when the device is switched on. If the
message Replace batteries additionally appears on the display then the device
switches itself off automatically for protection if the battery voltage is too low. The
exact battery voltage can additionally be displayed for checking purposes:
DC/AC/PEAK Language
Display LCD-Contrast
Batch Unit
Print+PC Autom.SwitchOff
Setup >>>> Bat.Voltage
Reset
The battery voltage should be greater than 3. V
Used batteries are special waste and must be disposed of accordingly.
A UTOMATIC P OWER -O FF
The device switches itself off automatically 2 minutes after the last measurement if
the measured value does not change.
You can deactivate this feature via Setup menu.
C HANGING THE P ROBE
To change the measuring probe, switch off the device first, connect the desired
measuring probe to the probe cable and then switch on the device again. If no
measuring probe is connected to the device or if the probe cable has no connection
to the device, a message is displayed when the device is switched on and the device
switches itself off again automatically.
M EASURING R ANGE E XCEEDANCE
When exceeding the measuring range, the display shows: - - - -

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F UNCTIONS OF THE O PERATING K EYS

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M ENU O PERATION
-0- K EY – Z ERO P OINT S ETTING
Zero-point adjustment takes place after pressing the -0- key. The probe must not be
in a magnetic field during this time. After the zero balancing is complete the display
shows between - .2 and + .2, due to the influence of the earth’s magnetic field
when moving the measuring probe.
MEM K EY – S AVE M EASURED V ALUE
After pressing the MEM key, the current measured value is saved in the selected
memory batch.
MENU KEY
The various functions of the device are controlled via a menu. After switching on the
device, press the MENU key in order to call up the menu.
The arrow keys are used to select the menu item; the current selection has a black
background. The selected menu item is called up via the OK key, either a sub-menu
or the selected device function appears.
The C key is used to quit the device menu; the main menu field is selected with the
central blue key.
DC / AC / PEAK SELECTION
DC/AC/PEAK >>>> DC Auto Range
Display DC Low Range
Batch DC High Range
Print+PC AC-RMS Auto Range
Setup Peak Low Range 1
Peak High Range 2
DC A UTO R ANGE
Switch to DC Auto Range in order to measure static fields. The probe has an
internal measuring range switch at 6 A/cm. For the user, this internal automatic
switching has no effect.
The DC symbol is shown behind the current measured value on the display.

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DC L OW R ANGE AND DC H IGH R ANGE
The use of the separate ranges below and above the internal measuring range
switch at 6 A/cm only makes sense with the analogue output probe P-T4A.
If you are using a non-analogue probe with firmware below version 8.2 (before July
2 18), this feature is not available. You will receive the message Probe not
adequate.
For the P-T4A probe, values from both areas within a measurement series would
lead to a wrong representation. If DC Low Range is selected and the range limit is
exceeded, the display values are cut off.
The display shows the symbol DC-Lo or DC-Hi behind the current measured value.
AC-RMS A UTO R ANGE
Switch to the AC-RMS Auto Range in order to measure alternating fields.
The AC symbol is shown behind the current measured value on the display.
In the case of sinusoidal AC fields, the respective effective value (true RMS) is displayed.
The respective conversion factors for full-wave and half-wave rectification are given
in the DIN standard 54 131 Part 1.
P EAK L OW R ANGE (P1 AND P EAK H IGH R ANGE (P2
Switch to the Peak Low Range, in former firmware versions known as P1 range, in
order to measure peak fields less than 600 A/cm (75 Gauss, 75 mT). The
Peak Lo symbol is shown behind the current measured value on the display. If the
measurement range is exceeded the display shows - - - -.
Switch to the Peak High Range, in former firmware versions known as P2 range,
in order to measure peak fields of more than 400 A/cm (5 Gauss, 5 mT). The
Peak Hi symbol is shown behind the current measured value on the display. (PEAK
P2 symbol is shown). If no peak value is displayed in the Peak Hi mode, this means
that the peak value is less 4 A/cm. In this case select the Peak Low Range.
If there is already a measured value in the peak value memory and a higher
measured value is recorded then the old measured value will be overwritten by the
new one. A short acoustic signal is sounded when the measured value is exceeded.
The peak value memory is reset via the -0- key.
When measuring AC fields in peak value memory mode the peak value and not the
effective value will be saved if the AC field is sinusoidal.

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DISPLAY
The instrument can display the reading in three ways: Digital, with Statistics, Analog.
D IGITAL
DC/AC/PEAK Digital >>>>
Display >>>> Statistic DC
Batch Analogue 100.5
Print+PC
Setup -0-
MENU MEM
The normal digital display is activated as standard. The current measured value is
displayed here.
S TATISTIC
DC/AC/PEAK Digital
Display >>>> Statistic >>>> 100.5 DC
Batch Analogue Batch No.: 1 No.: 2
Print+PC Min: 5 . A/cm
Setup Max: 349 A/cm
Mean: 199 A/cm
Std.Dev: 87. A/cm
-0-
MENU MEM
When the statistics display is activated the current measured value is displayed at
the top and the statistical parameters are additionally displayed.
A NALOGUE
DC/AC/PEAK Digital
Display >> Statistic
Batch Analogue >> Analogue >>
Print+PC
Setup Min-Value . A/cm
0.5 A/cm
-0- MENU MEM
After activating the analogue display the start of the measuring range is input first
(min. value), after which the analogue display is shown in the center on the display
with the preselected start of the measuring range. The maximum measuring range
value is automatically adjusted according to the size of the current measured value.

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BATCH
The MP–2000 contains a maximum of 1 different application batches for saving
and statistical evaluation of object-related series of measurements.
A total up to 1 , measurements can be stored. The maximum number of
measurements per application batch depends on the set number of batches.
First you should select the number of batches needed. Then activate the current
batch number in the menu Display/Select, where the measurement values are to be
stored.
D ISPLAY / S ELECT
DC/AC/PEAK Display / Select >>>> Batch No.: 1
Display Delete Min: 5 . A/cm
Batch >>>> Max.Batch-No. Max: 349 A/cm
Print+PC Mean: 199 A/cm
Setup Std.Dev: 87. A/cm
No. 3 - 13 A/cm
< CL >
The memory contents are displayed or the current batch is selected here. Also, any
measured value in the batch can be deleted here, upon which the statistics will be
automatically updated.
Any measured value can be selected using the arrow keys (measured value no. has a
black background) and the selected measured value is deleted using the center blue
key if required. The batch number is selected using the left and right blue keys.
D ELETE
DC/AC/PEAK Display / Select Clear last Value
Display Delete >>>> Clear actual Batch
Batch >>>> Max.Batch-No. Clear all Batches
Print+PC
Setup
Here you can delete either the last measured value from the current batch, all stored
measured values in the currently set batch or all measured values in all batches.
M AX . B ATCH N O .
DC/AC/PEAK Display / Select Batch
Display Delete
Batch >>>> Max.Batch-No. >>>> Batch 1
Print+PC Numbers 1
Setup
After selecting a maximum number of batches, the maximum number of measured
values that can be saved per batch is displayed.

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PRINT + PC
In this menu item, you can send stored measurement data via the serial interface,
either to the printer TOP-PRINT4 or to the PC. Both cables are plugged in the
same connector.
In addition, there is a possibility to send the current measured value to the PC every
.5 seconds, for the evaluation of measurement curves. If the printer is connected
instead, the values will be printed continuously.
T RANSMIT TO PC
This function is only used to supply the data application TRANSFER.
The applications TRANSFER-EXCEL and STAT6 don’t work any
longer with firmware version 15.1 and up. To transfer data to PC,
switch to the data transfer application MP-2000 TRANSFER at
https://www.list-magnetik.com/software
DC/AC/PEAK Transmit to PC >>>> Transmit to PC
Display Transmit to Printer
Batch Transmit Online Start Transmit
Print+PC >>>>
Setup
Send the statistical evaluation and measured values from the current batch to the PC
via the USB wireless interface and the serial interface. First, you need to start the
data transfer in the PC software.
T RANSMIT TO P RINTER
DC/AC/PEAK Transmit to PC Transmit to Printer
Display Transmit to Printer >>>>
Batch Transmit Online Start Transmit
Print+PC >>>>
Setup
Send the statistical evaluation and measured values from the current batch to the
printer TOP-PRINT4 via the USB wireless interface and the serial interface.
Older printer models (MEGA-PRINT, TOP-PRINT will not be served with
this firmware version 7.1 and up.
T RANSMIT O NLINE
DC/AC/PEAK Transmit to PC Start Transmit
Display Transmit to Printer
Batch Transmit Online >>>> Off
Print+PC >>>> On
Setup
If this function is activated, the current measured value will be sent via the serial
interface twice a second, if it is more than 0.8 A/cm or 1 Gauss.

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SETUP
S ELECT L ANGUAGE
DC/AC/PEAK Language >>>> German
Display LCD-Contrast English
Batch Unit Spanish
Print+PC Autom.SwitchOff Dutch
Setup >>>> Bat.Voltage
Reset
A DJUST LCD-C ONTRAST
DC/AC/PEAK Language Setup
Display LCD-Contrast >>>>
Batch Unit LCD-Contrast
Print+PC Autom.SwitchOff
Setup >>>> Bat.Voltage
Reset
The adjusting of the contrast is done with the arrow keys.
S ELECT MEASURING U NIT (Gauss – mT – A/cm – kA/m
DC/AC/PEAK Language Setup
Display LCD-Contrast Unit
Batch Unit >>>> Gauss
Print+PC Autom.SwitchOff mT
Setup >>>> Bat.Voltage A/cm
Reset kA/m
Conversion: 1 A/cm = .1 kA/m = 1.256 Gauss/Oersted = .1256 mT
A UTOMATIC S WITCH -O FF
DC/AC/PEAK Language Setup
Display LCD-Contrast Autom.SwitchOff
Batch Unit
Print+PC Autom.SwitchOff >>>> Off
Setup >>>> Bat.Voltage On
Reset
The device will automatically turn off 2 minutes after the last measurement if no
measurement value change occurs. This automatic is pre-set. It can be deactivated
e.g. when the device is used in a production line.

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D ISPLAY BATTERY VOLTAGE
DC/AC/PEAK Language Setup
Display LCD-Contrast Bat.Voltage
Batch Unit
Print+PC Autom.SwitchOff >>>> 4.2 V
Setup >>>> Bat.Voltage
Reset
The battery voltage should be more than 3. V.
R ESET
DC/AC/PEAK Language Setup
Display LCD-Contrast Instrument Reset
Batch Unit
Print+PC Autom.SwitchOff Reset
Setup >>>> Bat.Voltage
Reset >>>>
Reset returns all device settings to the factory settings. This function should be used
if settings have been changed and the device does not work properly, or if the
calibration of the probe does not work properly.

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A PPLICABLE M EASURING PROBES
Measuring range up to 2 , A/cm
Axial probes P-A2 and P-W2 (angular axial probe)
Tangential probes P-T2 and P-Z2 (flexible reed probe)
Additionally, in measuring range up to 4 , A/cm
Axial probe P-A4
Tangential probes P-T4, P-Z4 and P-T4A Analog-Output

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C HECKING MP-2000 WITH C ALIBRATION S TANDARD
It is not necessary to calibrate the device. The measuring probes are pre-calibrated
and are interchangeable.
A precision calibration standard with 180 A/cm is optionally available in order to
check the device with a measuring probe.
Tangential field probe:
Insert the probe with the lettering N = north pole pointing upwards into the slot of
the calibration standard until the probe latches at the front. Compare the displayed
value with the value of the calibration standard.
Axial field probe:
Insert the probe vertically into the cut-out with the red recess of the calibration
standard and rotate it until the maximum value is displayed. Compare the displayed
value with that of the calibration standard.
Flexible reed probe:
With the precision calibration standard, it is not possible to check the flexible reed
probe. In the slot for the tangential probe, it can even be damaged.
Instead, you can obtain a calibration standard with positioning point, which unfortu-
nately works less accurately, but does not damage the probe.

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U SING THE ANALOG PROBE P-T4A A NALOG -O UTPUT
The P-T4A Analog-Output analog probe works like a normal tangential probe P-T4.
Like the P-T4, it can measure up to 4 , A / cm (approx. 5, mT) and can be
checked with the precision calibration standard.
In addition, it offers an analog output that is connected to an oscilloscope. An addi-
tional BNC cable is included.
If you have connected the probe to the oscilloscope, you must set the zero line to +
1.8 V. The positive and negative values of the magnetic field measurement are then
displayed in the range between + .9 V and + 2.7 V.
Depending on the measuring range (low / high), the magnetic field strengths are
shown in this table converted into voltage values:
Measuring range Output
DC Low Range / Peak Low Range
Min -80 mT = +2,70 V
Threshold -0,1 mT
0 mT = +1,80 V
Threshold +0,1 mT
Max +80 mT = +0,90 V
DC High Range / Peak High Range
-5140 mT = +2,70 V
Threshold -1 mT
0 mT = +1,80 V
Threshold +1 mT
+5140 mT = +0,90 V

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T ECHNICAL D ATA
Measuring units: A/cm - kA/m – Gauss (Oe) - Tesla switchable
(1 A/cm = .1 kA/m = 1.256 Gauss = 1.256 Oersted = .1256 mT)
Applicable measuring
probes:
Axial probes P-A2, P-W2 and P-A4,
Tangential probes P-T2, P-T4, P-Z2, P-Z4, P-T4A.
Measuring range DC: -4 , A/cm
Measuring range AC: 2 -4 , A/cm
Accuracy: in the homogeneous field
± 1 A/cm up to 5 A/cm,
± 2 % of measured value from 5 A/cm,
± 3 % of measured value from 2 , A/cm
Resolution: -2 A/cm: .1 A/cm,
> 2 A/cm: 1 A/cm,
> 1 , A/cm: 1 A/cm
Frequency range AC: 1 Hz - 5 kHz
Peak Hold: with impulse duration >= . 1 s
Display: Graphic display
with additional analog display of measured values
Multilingual menu
navigation:
German / English / Spanish / Dutch
Data logger: 1 , measurements, divisible into 1 Batches
Statistics: Count / Maximum / Minimum / Average /
Standard deviation
Interface: RS232 interface with USB cable
for communication with PC and printer
Power supply: 3x 1.5 V AA Mignon
Operating time: approx. 5 hours
Dimensions: 2 x 95 x 41 mm
Weight: 265 g with batteries
Warranty: 12 months on the device, 3 months on the probe