AGICO MFK2-FA User manual

MFK2-FA / MFK2-FB
THREE FREQUENCY KAPPABRIDGES FOR MEASUREMENTS OF
MAGNETIC SUSCEPTIBILITY
User Manual
Version 1.2
September 2022

MFK2 – User Manual Contents
Contents
1 MFK2 Introduction 1
1.1 MainFeatures ...................................... 1
1.2 MFK2versions ...................................... 1
1.2.1 MFK2-FA ..................................... 1
1.2.2 MFK2-FB ..................................... 2
1.3 MeasuringPrinciple .................................. 2
1.4 Data acquisition software SAFYR7 . . . . . . . . . . . . . . . . . . . . . . . . 2
1.5 TechnicalSpecications ............................... 3
1.6 Specimens to be measured . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2 MFK2 accessories and attachments 5
2.1 Standard set of accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.2 Spare parts and accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.3 3DRotator......................................... 8
2.4 CS4 – High Temperature Furnace Apparatus . . . . . . . . . . . . . . . . . 9
2.5 CS-L – Low Temperature Cryostat Apparatus . . . . . . . . . . . . . . . . . 10
3 Installation Procedures 11
3.1 ChoosingthePlace................................... 11
3.2 Interconnection of Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.3 Main Switch and Main Fuse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.4 Testing the Magnetic Environment . . . . . . . . . . . . . . . . . . . . . . . . 15
4 Measurements 17
4.1 Operationbasics .................................... 17
4.1.1 Switching ON and OFF the instrument . . . . . . . . . . . . . . . . . 17
4.1.2 Measurements with manual holders . . . . . . . . . . . . . . . . . . 17
4.1.3 Measurements with rotators . . . . . . . . . . . . . . . . . . . . . . . . 20
4.2 Calibration ........................................ 22
4.2.1 Calibration with manual holder . . . . . . . . . . . . . . . . . . . . . . 22
4.2.2 Calibration with rotators . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
4.3 HolderCorrection.................................... 23
4.3.1 Holder Correction of the manual holders . . . . . . . . . . . . . . . 23
4.3.2 Holder Correction of the rotators . . . . . . . . . . . . . . . . . . . . . 24
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MFK2 – User Manual
5 Troubleshooting and Maintenance 25
5.1 Troubleshooting..................................... 25
5.1.1 Hardware Error Indications . . . . . . . . . . . . . . . . . . . . . . . . . 25
5.1.2 Software Error Messages . . . . . . . . . . . . . . . . . . . . . . . . . . 26
5.2 Maintenance....................................... 27
5.2.1 Cleaning the Holders and Rotator . . . . . . . . . . . . . . . . . . . . 27
5.2.2 Cleaning the Classic Rotator and Belt . . . . . . . . . . . . . . . . . 27
5.2.3 Cleaning of 3D Rotator . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
5.2.4 Cleaning of Up/Down Mechanism . . . . . . . . . . . . . . . . . . . . 35
6 Appendix 39
6.1 Specimen coordinate system . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
6.2 List of Magnetic Anisotropy Factors . . . . . . . . . . . . . . . . . . . . . . . . 39
6.3 Orientationparameters................................ 41
6.4 EC Declaration of Conformity . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
6.5 Warranty.......................................... 44
User Manual Conventions
Prohibition symbol is used to prohibit any action which may cause a loss of
properties, damage or injury.
Warning symbol is used to draw a special attention to an important infor-
mation.
Information symbol is used to give a useful hint or tip for more comfortable
work with the instrument.
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MFK2 – User Manual
MFK2 Software Conventions
Frequency User interface terms.
200 A/m (Default values are underlined.)
START User interface buttons.
STOP
Execute|Calibration Menu Item.
[F1] Keyboard shortcuts.
Status Bar Indicators
Green Instrument is ready.
Orange Instrument in action.
Red Error or User stop.
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MFK2 – User Manual
General Safety Instructions
Before beginning of work with the instrument review the following safety precau-
tions to avoid injury and prevent damage to this product or any products con-
nected to it.
Service procedures should be performed by qualied personel only!
Do Not Operate Without Covers! To avoid electric shock or re hazard, do
not operate this product with covers or panels removed.
Do Not Operate in Wet or Damp Conditions! To avoid electric shock, do not
operate this product in wet or damp conditions.
Do Not Operate in an Explosive Atmosphere! To avoid injury or re hazard,
do not operate this product in an explosive atmosphere.
Do Not Disconnect Connectors! To avoid damage of the instrument never
disconnect any connector while the device is ON.
Do Not Operate With Suspected Failures! If you suspect there is damage to
this product, have it inspected by qualied service personnel.
Ground The Instrument! The instrument is grounded through the Protective
Earth lead of the power cord. To avoid electric shock, it is essential to connect
the earth terminal of power cord to the Protective Earth terminal before any
inputs or outputs.
Do Not Insert Anything into the Holes of Fan! Do not insert anything into
the holes of the fan to avoid damaging the instrument.
Use Proper Power Cord! To avoid re hazard, use only the power cord speci-
ed for this product.
Fasten Connectors! Do not operate the instrument if all connectors are not
properly plugged and xed by screws.
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MFK2 – User Manual
Use Proper Mains Voltage! Do not operate this product from a power source
that is outside of the specied voltage range.
Use Proper Fuses Only! Do not use fuses which are not specied by the
manufacturer. If a fuse with a different characteristics or value is used, the
protection is not effective.
Operator’s Training! Operator should be familiar with operation of the in-
strument and Safety Regulations.
Use Manufacturer’s Cables Only! Other devices can be connected to the
instrument via the appropriate cables only.
Do not drop the product and do not expose it to any major shocks!
Do not operate the product outside the power limits given in the speci-
cations!
Keep the packaging material out of the reach of children to prevent the
risk of suffocation!
The rst installation and customer training is performed exclusively by the
AGICO technician or by the authorized representative.
Unstable or highly disturbed AC power may invoke safety circuits to protect
the sensitive electronic parts by switching OFF the instrument or burning
inner fuses.
Dispose of packaging material immediately according to locally applica-
ble regulations!
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MFK2 – User Manual
Storage and Transportation
The properly wrapped instrument can be stored and transported at a temperature
-20 ◦C to + 55 ◦C and relative humidity up to 80 %. The instrument must be stored
at suitable place, free of dust and chemical evaporation. Handle with care!
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MFK2 – User Manual MFK2 Introduction
1 MFK2 Introduction
The MFK2 Kappabridges are the most sensitive commercially available laboratory
instruments for measuring magnetic susceptibility and anisotropy of magnetic sus-
ceptibility (AMS). MFK2 is updated version of well known MFK1 Kappabridge with
enhanced resistance against external disturbances, improved processing of the sig-
nal and sophisticated data acquisition. MFK series of Kappabridges allows to mea-
sure magnetic susceptibility of rock samples under three measuring frequencies -
976 HZ, 3904 Hz and 15616 Hz.
For comparison of the MFK2 (Three frequency Kappabridge) and the
KLY5 (Out-of-phase Kappabridge) please refer to http://www.agico.com/
downloads/documents/agicoprints/kappa_comp.pdf
1.1 Main Features
• Measurement of magnetic susceptibility with three different frequencies of
drive eld.
• Measurement of anisotropy of magnetic susceptibility (AMS).
• Fully automatic measurement of AMS and eld dependence of AMS, if op-
tional 3D Rotator is used (version FA).
• Automated eld variation measurement (version FA).
• Built-in interface for controlling the furnace CS4 and cryostat CSL (version FA).
• High sensitivity 20×10-9 SI (976 Hz, 400 A/m).
• Full control by computer.
• Sophisticated hardware and software diagnostics fully controlled by com-
puter.
1.2 MFK2 versions
1.2.1 MFK2-FA
MFK2-FA is three frequency Kappabridge fully equipped with Up/Down mecha-
nism and rotator for spinning specimen method of AMS measurements. Auto-
matic measurements of eld variations of bulk susceptibility and full support of
CS4 and CS-L apparatuses are present as well. MFK2-FA allows to use 3D Rotator
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MFK2 – User Manual Measuring Principle
(optional accessory), which signicantly reduces the measuring time of AMS and
simplies manual handling to just one insertion of the sample. Using of 3D Rotator
also enables fully automated measurement of eld dependence of AMS.
1.2.2 MFK2-FB
MFK2-FB is cost driven, basic version of three frequency Kappabridge for manual
measurements of AMS, bulk susceptibility and eld variations of magnetic suscep-
tibility without Up/Down mechanism, rotator and CS4 or CS-L support. To facilitate
AMS measurements magnetic susceptibility must be manually measured in 15 dif-
ferent orientations. Can be upgraded to MFK2-FA version, but such upgrade has to
be done in AGICO facility.
1.3 Measuring Principle
In principle the instrument represents a precision fully automatic inductive bridge
equipped with automatic zeroing system and automatic compensation of the ther-
mal drift of the bridge unbalance as well as an automatic switching to appropriate
measuring range.
Special diagnostics was embedded in MFK2 Kappabridges, which monitors im-
portant processes during measurement with MFK2 and also with CS4 or CS-L unit.
The instrument has no control knobs, it is fully controlled by external computer
via USB connection. The main advantage of the MFK2-FA/FB models compared to
the older Kappabridges is measurement of frequency variations of magnetic sus-
ceptibility and anisotropy of magnetic susceptibility. The auto-ranging and auto-
zeroing works over the entire measuring range. Automatic zeroing compensates
real and imaginary components, the zeroing circuits are digitally controlled by
rmware. The output signal from pick-up coils is amplied, ltered and digitized,
raw data are transferred directly to the computer which controls all the instrument
functions.
1.4 Data acquisition software SAFYR7
All functions of MFK2 Kappabridges, including temperature variations of mag-
netic susceptibility, are controlled by software SAFYR7. This software for MS Win-
dows®operating systems also performs advanced calculations of AMS tensors, eld
and temperature variation factors, separation of ferromagnetic and paramagnetic
susceptibility (from thermomagnetic curves) and so on. SAFYR7 also incorporates
viewer of resulting data les. Updated versions of SAFYR7 can be downloaded
from AGICO web pages www.agico.com for free.
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MFK2 – User Manual Technical Specications
1.5 Technical Specications
Frequency 1 Frequency 2 Frequency 3
Operating frequency [Hz] 976 3904 15616
Field intensity ranges
[A/m]
2 - 700 2 - 350 2 - 200
Field homogenity [%] 0.5 1 1
Sensitivity [×10−9SI], 20 60 120
Measuring range [SI] <0.9 <0.3 <0.7
Accuracy within one range
[%]
0.1 0.1 0.1
Accuracy of the range di-
vider [%]
0.3 0.3 0.3
Pick-up coil inner diameter
[mm]
43
Nominal specimen volume
[cm3]
10
Operating temperature
range [◦C]
+15 to +35
HF Electromagnetic
Field Intensity Resistance
[ Vm−1]
1
Power requirements 100-240 V, 50 / 60 Hz
Power consumption [VA] 40
Relative humidity [%] max. 80
Dimensions / Mass
MFK2 Control Unit 230 mm×210 mm×130 mm / 4 kg
MFK2 Pick-up Unit 280 mm×355 mm×320 mm / 11 kg
Rotator 320 mm×70 mm×65 mm / 1 kg
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MFK2 – User Manual Specimens to be measured
1.6 Specimens to be measured
For spinning method MFK2-FA only
Cylinder regularly shaped specimens
Diameter 25.4 (+ 0.2, -1.5 mm)
Length 22.0 (+ 0.2, -1.5 mm)
Cube 20×20×20 mm (+ 0.5, -1.5 mm)
For static method MFK2-FA, MFK2-FB
as for spinning method plus:
Cube 23×23×23 mm
ODP type 26×25×19.5 mm
Fragments (powders, liquids) up to 40 cm3for bulk susceptibility
Holders for specimens of slightly different size can be supplied on request.
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MFK2 – User Manual MFK2 accessories and attachments
2 MFK2 accessories and attachments
2.1 Standard set of accessories
Standard set of accessories provided together with the MFK2 is listed below.
Part Quantity
Accessories for both MFK2-FA or MFK2-FB
cylindrical specimen holder (diameter 25.4 mm, length 22 mm) 3
cubic specimen holder (for cubes 20x20x20 mm) 1
cubic specimen holder (for cubes 23x23x23 mm) 1
specimen holder for ODP boxes 1
vessel for fragments 2
screwdriver for rotator 2
specimen marking tool 1
plastic cylinder 1
tool for inserting plastic cylinder 1
cylindrical calibration standard 1
Accessories for MFK2-FA only
classical rotator 1
spare screw for xing specimen 3
adapter for manual holders 1
adapter for cubic samples 1
screw for adapter 2
spare tooth belt 1
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MFK2 – User Manual Spare parts and accessories
2.2 Spare parts and accessories
KLY CYL26
Cylindrical Specimen
Holder standard size
specimen (diameter
25.4 mm, length 22
mm) 15 positions in
static measurement
mode
KLY CUB20
Cubic Specimen
Holder specimen
20x20x20 mm 15
positions in static
measurement mode
KLY CUBS23
Cubic Specimen
Holder soft specimen
in plastic box 23x23x23
mm 15 positions in
static measurement
mode
KLY ODP
Specimen Holder
specimen in plastic
box 25x25x20 mm
15 positions in static
measurement mode
KLY VES40
Vessel for Specimen
Fragments for use in
static measurement
mode
KLY PCY
Plastic Cylinder for
Manual Measurement
KLY SCR
Spare Screw for Shell of
Rotator
KLY SCRL
Spare Screw (longer)
for Shell of Rotator for
use with the KLY BXA
Insert Box
KLY BXA
Insert Box for Shell of
Rotator for cubic speci-
men 20x20x20 mm
KLY SCD
Screw Driver for Shell of
Rotator Screw
KLY BLT
Belt for Rotator and/or
Up-Down Mechanism
KLY BLT3D
Belt for 3D Rotator
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MFK2 – User Manual Spare parts and accessories
KLY RTS
Shell of Rotator (sam-
ple holder of KLY-
3S/4S/5A or MFK1/2-
A/FA rotator)
KLY CALIB
Calibration Standard
size 25.4 mm in diam-
eter, length 22 mm
for KLY-2, KLY-3/3S,
KLY-4/4S, MFK1/2 all
model
KLY CIT
Tool for Inserting Plas-
tic Cylinder
KLY CMA
Marking Tool for Stan-
dard Cylindrical Speci-
mens
KLY AMH
Adapter for Manual
Holders xing manual
holders in Up-Down
Mechanism
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MFK2 – User Manual 3D Rotator
2.3 3D Rotator
3D Rotator brings increased speed and better comfort of anisotropy of magnetic
susceptibility measurements. The 3D Rotator rotates the specimen simultaneously
about two axes with different velocities. The 2-axis rotation enables to determine
320 directional susceptibilities during a single anisotropy measurement. These di-
rections are very well distributed on a sphere which makes the measuring design
almost rotatable. The actual measurement is fully automated in such a way that,
once the specimen is mounted into the rotator, it requires no additional manipu-
lation to measure the full AMS tensor. The approximate duration of one anisotropy
measurement including bulk susceptibility is 1.5 min, compared to more than 3
minutes when the classical (3-plane) rotator is used.
Specimens to be measured
Cylinder (regularly shaped specimens)
Diameter 25.4 ±1 mm
Length 22.0 ±1 mm
Main features
• Rapid anisotropy measurements with full auto ranging.
• One specimen is measured in less than 2 minutes.
• Specimen has to be inserted only once.
• Single manual handling minimizes specimen misorientation errors.
• Automated AMS measurement in variable elds.
• Bulk susceptibility is automatically measured right after anisotropy measure-
ment.
• Anisotropy tensor is automatically calculated from 640 directional suscepti-
bilities.
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MFK2 – User Manual CS4 – High Temperature Furnace Apparatus
2.4 CS4 – High Temperature Furnace Apparatus
The CS4 High Temperature Furnace Apparatus is optional attachment for MFK2-FA
Kappabridge designed for measurement of the temperature variations of low-eld
magnetic susceptibility of minerals, rocks and synthetic materials in the tempera-
ture range from ambient temperature to 700◦C. Measurements can be performed
under the protective argon atmosphere to reduce oxidation of measured speci-
men.
The quasicontinuous measurement process is fully automated, being controlled
by the software SAFYR. Data processing software Cureval serves for advanced anal-
ysis of thermomagnetic curves such as empty furnace measurement subtraction,
Curie temperature estimation and separation of ferromagnetic and paramagnetic
part of susceptibility.
Main features
• Lowest detectable susceptibility change 1x10−7SI.
• Measurement at high temperatures up to 700◦C.
• Software controlled heating and cooling modes.
• Measurement in the air or argon atmosphere.
• 500 to 700 pairs of susceptibility and temperature measurements to dene
a thermomagnetic curve.
Technical specications
• Nominal specimen volume (powder or fragments) 0.25 cm3.
• Inner diameter of measuring vessel 6 mm.
• Temperature range: room temperature up to 700◦C.
• Accuracy of temperature determination ±2◦C.
• Sensitivity to susceptibility changes 1x10−7SI.
• Power requirements 100 - 240 V, 50/60 Hz, 700 VA.
9

MFK2 – User Manual CS-L – Low Temperature Cryostat Apparatus
2.5 CS-L – Low Temperature Cryostat Apparatus
The CS-L Low Temperature Cryostat Apparatus is optional attachment for MFK2-FA
Kappabridge designed for measurement of the temperature variation of low-eld
magnetic susceptibility of minerals, rocks and synthetic materials in the tempera-
ture range from -192◦C to ambient temperature.
The specimen is placed in a measuring vessel which is cooled inside the cryostat
by liquid nitrogen and then heated spontaneously to a given temperature. The
argon gas is needed for deplenishing the liquid nitrogen out of cryostat.
The quasi-continuous measurement process is fully automated, being controlled
by the software SAFYR. Data processing software Cureval serves for advanced anal-
ysis of thermomagnetic curves such as empty furnace measurement subtraction,
Curie temperature estimation and separation of ferromagnetic and paramagnetic
part of susceptibility.
CS4 system is a necessary condition for using CS-L system!
Main features
• Lowest detectable susceptibility change 1x10−7SI.
• Measurement at low temperatures from -192◦C.
• Cooled by liquid nitrogen.
• Estimation of ratio between ferromagnetic and paramagnetic part of suscep-
tibility.
Technical specications
• Nominal specimen volume (powder or fragments) 0.25 cm3.
• Inner diameter of measuring vessel 6 mm.
• Temperature range -192◦C up to 0◦C.
• Accuracy of temperature determination ±2◦C.
• Sensitivity to susceptibility changes 1x10−7SI.
• Power requirements 100 - 240 V, 50/60 Hz, 700 VA .
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MFK2 – User Manual Installation Procedures
3 Installation Procedures
The rst installation and customer training is performed exclusively by the AGICO
technician or by the authorized representative. If you need later to reinstall the
apparatus, due to moving the instrument to another place or any other reasons,
be sure the following conditions are met to achieve guaranteed parameters.
3.1 Choosing the Place
The instrument must not be placed near sources of alternating magnetic
eld, e.g. big transformers, electric motors, electricity power source wires
etc.
Do not place the instrument near thermal and electrical sources and keep
it away from direct sunshine. The pick-up unit must not be exposed to heat
from the sun or from other sources, which would affect the precision of mea-
surement.
Do not place the pick-up coils near the other instruments or computer mon-
itors.
Do not place the instrument in a draughty room. Air conditioning may
sometimes cause higher thermal drift of coils, prevent the direct air ow.
The temperature in the room should be stable as much as possible. The
temperature variation in the room should not exceed 2◦C per hour.
Place the instrument and pick-up unit on a wooden table with good stability
which has no iron part under working desk.
During measurement prevent motion of magnetic objects (metal parts of
chairs, doors, furniture, watches, rings, tools, components of your clothes,
etc.)
Fig. 1 shows recommended layout of MFK2/CS4 apparatuses parts.
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MFK2 – User Manual Interconnection of Units
Figure 1: Recommended layout of MFK2/CS4 apparatuses parts
3.2 Interconnection of Units
Fig. 2 shows the Interconnection Scheme. If you are installing only Kappabridge
do not consider CS4, laboratory power supply EA-PS and its accessories. Be sure
the instrument is unplugged from mains while connecting the cables. Do not
manipulate with any connector while the instrument is ON. Fix the connectors
by screws, plug the mains socket and switch the Kappabridge on.
Check the cables for labels indicating the instrument sub-system to connect
to (some cables may have same connectors on both sides, but different internal
connections). Hoses of the cooling liquid are labeled with color marks at their end,
as well as the connecting points on the barrel and pickup unit. Please check the
correct hose connection, in some cases wrong connection can lead to damage of
the instrument.
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