MS2/MS3 Datasheet
Magnetic Susceptibility System
Innovation in Magnetic Field Measuring Instruments
MS2/MS3 Magnetic Susceptibility System
MS2/MS3 Magnetic Susceptibility System
This versatile system comprises a meter with a fully interchangeable suite of sensors
for providing high resolution magnetic susceptibility readings of a range of samples
including soils, rocks, powders and liquids. Magnetic susceptibility measurements
provide important information about the composition and properties of materials.
The sensors require no adjustments to interoperate and lend themselves to a broad
range of applications in the field and laboratory.
Typical Applications
Geological and soil surveys
Archaeological prospecting
Palaeoclimatic studies
Stratigraphic correlation
Core logging and correlation
Soil and airborne pollution surveys
Analysis of ferrites and magnetic inks
Study of micro/nano magnetic particles and fluids
Range 0.1 SI (MS2) or 26 SI (MS3)
Resolution 2x10-6 SI
Measurement period ~1s or ~10s (MS2) or down to 0.1s (MS3)
Wide range of field, laboratory and down-hole sensors
Sensors fully interchangeable with no adjustment required
MS2/MS3 Magnetic Susceptibility System
MS2 Magnetic Susceptibility Meter
The MS2 is a portable meter that will operate with all MS2 sensors. Readings are
displayed via an integral four-digit display. Its internal batteries are rechargeable from
the mains or a vehicle charging point, with indicators for battery status and charging.
Push buttons or a toggle switch are used for zeroing or taking measurements.
The serial connection can be used for control and acquisition of data, and a range
switch allows the user to select high or low resolution. All sockets and switches are
environmentally sealed for outdoor use.
The meter is supplied with a carrying bag for field use; an instrument stand for
laboratory use; a universal mains adaptor; a vehicle charger; and a serial/USB
MS3 Magnetic Susceptibility Meter
The MS3 is a compact, lightweight meter, offering increased performance over the
MS2 and further significant advantages in terms of portability, configurability and
connectivity to a PDA device for GPS-logged field work. It can measure magnetic
susceptibility up to 26 SI (compared to 0.1 SI for the MS2) with a measurement period
selectable down to 0.1s minimum.
The MS3 is completely software controlled via a USB connection to a compatible PC,
laptop, PDA or mobile phone, which provides all measurement control and display. The
Bartsoft software supplied with the unit gives the user control over the measurement
protocol and speed, and includes options to display data in both chart and table
formats. (Bartsoft details are shown at the end of this brochure.)
The MS3 operates with all MS2 sensors. The meter is sealed and suitable for both
indoor and outdoor use. A rugged PDA/GPS is recommended for outdoor use and a fully
compatible Trimble Nomad 900L PDA can be supplied.
MS2 Meter
MS3 Meter
0.09999 SI (volume specific)
26 SI (volume specific)
Maximum resolution
2x10-6 SI (2 x10-7 CGS)
Measurement time
1s or 10s
Selectable to 0.1s minimum
No (requires PC or PDA)
Laboratory data logging
Yes (with Bartsoft or Multisus)
Yes (with Bartsoft )
Field data logging
Not available
Yes (with Bartsoft for Windows® CE)
Internal battery
0.7Ah sealed Ni-MH gives 8 hours use
before recharge is required
Enclosure material
High impact ABS
White Acetal
Operating temperature
-10°C to +40°C
-10°C to +40°C
Dimensions (W x H x D)
155 x 50 x 256mm
50 x 25 x 123.5mm
Battery charger inlet
2.1mm socket, 6-18VDC, 100mA
maximum, polarity protected
Battery charge
16 hours full charge
RS232 interface to PC
1200/9600 baud rate selected on rear
Pin assignment: 1 = Ground Ov, 2 = MS2
Tx, 3 = MS2 Rx
N1200/9600 baud rate – software
Interface connector
4-way rear panel Fischer socket
Hirose HR10-7R-6P
MS2 Meter
MS3 Meter
Cables to sensor
Cables to PC
RS232 supplied
Serial/USB adaptor supplied
USB supplied
RS232 + 5V mains charger supplied
MS2/MS3 Magnetic Susceptibility System
MS2B Dual Frequency Sensor
This sensor is primarily used to measure the magnetic susceptibility of soil, rock
and sediment samples, and is widely recognised as a standard instrument in the
characterisation of the magnetic properties of soil. It can also be used in conjunction
with the AMSWIN-BAR software and sample adaptor for measurements of the
anisotropy of magnetic susceptibility in rocks.
The dual frequency facility permits identification of superparamagnetic magnetic
grains, which helps characterise the processes that affect the sample.
The MS2B is also suitable for susceptibility measurements of magnetic fluids, inks and
micro/nano particles.
The sensor accepts 10ml and 20ml cylindrical bottles, 25.4mm and 23mm cubic boxes,
35mm pots and 25.4mm cylindrical cores.
Calibration accuracy
1% (10ml calibration sample provided)
Measurement period (MS2)*: x 1 range
x 0.1 range
1.5s SI (1.2s CGS)
15s SI (12s CGS)
Operating frequencies: LF
0.465kHz ±1%
4.65kHz ±1%
Amplitude of applied field
250μT peak ±10% (LF & HF)
Maximum resolution
2 x 10-6 SI (vol) (2 x10-7 CGS) (LF & HF)
HF/LF cross calibration
0.1% worst case (can be adjusted using calibration sample)
Drift at room temperature
<2 x 10-5 SI (<2 x 10-6 CGS) in 3 minutes (after 5 minute warmup)
Dimensions (W x H x D)
110 x 145 x 210mm
Sample cavity internal diameter
Enclosure material
High impact ABS
* MS3 measurement period is software selectable
MS2C Core Logging Sensor
The MS2C Sensors are loop sensors, ranging from 30mm to 162mm in diameter, for
high resolution volume susceptibility measurements on any type of whole cores: peat,
lake or marine sediment.
These rugged sensors have a very low temperature induced drift and are designed for
laboratory, field or shipboard use. They can be used with manual or automated core
analysis systems.
The sensors are used in prospection, core correlation and the identification of
palaeoclimatic sequences. Optimum measurement accuracy is achieved with 5 to
10mm core clearance. Calibration graphs are provided for varying core to sensor
Loop internal diameter
30, 36, 40, 45, 47, 50, 60, 70, 72, 80, 85, 90, 93, 100, 110, 120, 125,
130, 135, 140, 145, 146, 150, 160 or 162mm (Intermediate sizes
can be provided at an additional charge)
Calibration accuracy
5% (calibration sample provided)
Measurement period (MS2)*: x 1 range
x 0.1range
1.1s SI (0.9s CGS)
11s SI (9s CGS)
Operating frequency
Spatial resolution
Drift at room temperature
<2 x 10-5 SI (vol) (<2 x 10-6 CGS) in 10 minutes (after 5 minutes’
Dimensions (W x H x D)
200 x 290 x 162mm (with feet)
2 to 2.7kg depending on diameter
Enclosure material
White polyacetal
* MS3 measurement period is software selectable
MS2/MS3 Magnetic Susceptibility System
MS2D Surface Scanning Probe
This loop probe is designed for rapid assessment of the content of magnetic materials
in the top 100mm of the land surface. It is used in studies of slope processes and in
archaeological prospecting. The probe can only be operated in conjunction with the MS2
Probe Handle.
Depth of response
50% at 15mm, 10% at 60mm
Measurement period (MS2)*: x 1 range
x 0.1 range
0.6s SI (0.5s CGS)
6s SI (5s CGS)
Operating frequency
950 ± 60Hz
Drift at room temperature
<10 x 10-5 SI (vol) (<10 x 10-6 CGS) in 20
minutes (after 20 minutes’ warm-up)
Dimensions (∅ x H): overall
208mm x 104mm
185mm mean diameter
Enclosure material
Reinforced epoxy
* MS3 measurement period is software selectable
MS2E Core Logging Sensor
This sensor is designed to perform high resolution measurements on the surface of
split drill or soft sediment cores. The sensitive area of the probe (i.e. the area receiving
50% maximum response) is in the form of a 3.8mm x 10.5mm rectangle, allowing very
fine resolution surface measurements. The position of the long axis is identified by
marks on the circumference of the sensor. The MS2E is supplied in a protective case.
Calibration accuracy
2% (calibration sample provided)
Area of response
3.8mm x 10.5mm at the end of the
ceramic cylinder
Depth of response
50% at 1mm, 10% at 3.5mm
Measurement period (MS2)*: x 1 range
x 0.1 range
1.5s SI (1.2s CGS)
15s SI (12s CGS)
Operating frequency
Drift at room temperature
<2.3 x 10-5 SI (vol) (<2 x 10-6 CGS) in 10
minutes (after 5 minutes’ warm-up)
Dimensions (W x H x D)
50 x 25 x 149mm
Enclosure material
Diecast aluminium and ceramic
* MS3 measurement period is software selectable
MS2F Surface Point Probe
This miniature probe is ideal for the stratigraphic study of exposed geological and
archaeological sections. It is also used where uneven surface conditions prevent good
contact with the MS2D loop. The MS2F can only be operated when connected to the
MS2 Probe Handle.
Area of response
End face and cylinder wall up to the
Depth of response
10% at 6mm from end face and 4.5mm
from outer diameter of end cap
Measurement period (MS2)*: x 1 range
x 0.1 range
1.1s SI (0.9s CGS)
11s SI (9s CGS)
Operating frequency
Drift at room temperature
<10 x 10-5 SI (vol) (<5 x 10-6 CGS) in 20
minutes (after 20 minutes’ warm-up)
Dimensions: sensitive volume
15mm diameter x 20mm
35mm diameter x 85mm
Enclosure material
Nylon 66
* MS3 measurement period is software selectable
MS2/MS3 Magnetic Susceptibility System
MS2G Single Frequency Sensor
This sensor is designed for magnetic susceptibility measurements of 1ml liquid
or powder samples. Calibrated volume is 1ml but scaling correction values allow
volumes down to 0.2ml to be measured. The sensor operates at a low frequency and
has excellent temperature stability.
The MS2G is used for susceptibility measurements where only very small samples of
homogeneous fine-grained material are available: for example, airborne particulates
collected in filter papers, or particles in colloidal suspension.
The sensor accepts commercially available polythene vials with a diameter of 8mm
and a length of 30mm. The sample holder is compatible with other rock measuring
equipment, allowing a comprehensive range of measurements to be taken without
the need for re-packing the sample. The sample cavity is situated at the tip of a boom
mounted on the aluminium electronics enclosure.
Calibration accuracy
2% (1ml calibration check sample provided)
Measurement period (MS2)*: x 1 range
x 0.1 range
0.9s SI (0.7s CGS)
9s SI (7s CGS)
Operating frequency
Drift at room temperature
<2x10-5 SI (vol) (<2x10-6 CGS) in 5 minutes (after 5 minutes’
Sample cavity dimensions
8.5mm diameter x 28mm in height
Sensitive region
5mm height at centre of cavity
Dimensions (W x H x D)
91 x 67 x 184mm
Enclosure material
Aluminium and ceramic
* MS3 measurement period is software selectable
MS2K Surface Sensor
This handheld sensor is designed to provide highly repeatable measurements of the
volume magnetic susceptibility of moderately smooth surfaces. Applications include
description of magnetic stratigraphy and identification of horizons. It can also be used
for characterisation of outcrops and logging split cores. The sensor has applications in
materials testing where the relatively low operating frequency permits measurement
on some of the less electrically conductive metal alloys, for example stainless steel,
without magnetisation.
Calibration accuracy
1% (calibration sample provided)
Area of response
25.4mm diameter (full-width, halfmaximum)
Depth of response
50% at 3mm, 10% at 8mm
Measurement period (MS2)*: x 1 range
x 0.1 range
1.2s SI (1s CGS)
12s SI (10s CGS)
Operating frequency
Drift at room temperature
<2 x 10-5 SI (vol) (<2 x 10-6 CGS) in 5
minutes (after 5 minutes’ warm-up)
May be used under wet conditions:
not suitable for immersion
Dimensions (W x H x D)
50 x 170 x 165mm
0.32kg (1.20kg with carrying case)
* MS3 measurement period is software selectable
MS2/MS3 Magnetic Susceptibility System
MS2H Downhole Sensor
The MS2H is a downhole sensor for profiling the magnetic susceptibility of strata
in 25mm nominal diameter auger holes. (Suitable augers can be supplied.) The
detachable probe is fitted to the lower end of a push-tube to give an assembled length
of 1 metre. Waterproof screw couplings allow further 1-metre extension tubes to be
added to achieve any practical length. The probe assembly is hand guided within the
hole during logging. Graduations ensure depth control to a resolution of 1cm. The
probe connects to the meter via a 5mm diameter cable, which may be extended to any
practical length up to 100m.
The area of sensitivity for magnetic investigation radiates uniformly from the end of
the probe, resulting in tolerance to inhomogeneities. Strata as narrow as 12.5mm in
thickness can be discriminated. Measurements to a resolution of 1 x 10-5 SI (volume)
are obtained in less than 1 second. A low operating frequency of 1.3kHz ensures
immunity to electrical conductivity effects.
Applications include cultural stratigraphy in archaeology, geomorphology, landslide
characterisation, paleosol identification, pedology, erosion studies and stratigraphic
Specification - MS2H Sensor
Calibration accuracy
1% (calibration sample provided)
Spatial resolution (vertical)
12.5mm (full-width, half-maximum)
Depth of horizontal penetration
50%/2mm, 10%/5.5mm, 1%/13mm
Operating frequency
Calibration accuracy
5% in ø22mm sample
Measurement period (MS2)*: x 1 range
x 0.1 range
0.9s SI (0.7s CGS)
9s SI (7s CGS)
Thermal drift (typical)
2 x 10-5 SI/ºC (below 20ºC)
-1 x 10-5 SI/ºC (above 20ºC)
Thermal setting time (typical)
30s/ºC (step change)
Markings for plane of sensitivity
Lowest graduation
Dimensions (∅ x L)
21.5 x 153mm
* MS3 measurement period is software selectable
Specification – Push tubes
Anodised aluminium alloy with BS015 ‘O’ ring seal and stainless
steel threaded couplings
Lengths including union:
0.35kg each
Specification – Connecting cable
10m length, 5mm diameter co-axial (may be extended to 100m
Specification – Carrying case
Dimensions (W x H x D)
380 x 140 x 138mm
Weight (full)
‘O’ Ring Seal
Product Code
& serial No.
Downhole measurements at
the Canning Archaelogical
Site (USA) recording multiple
palesols (2Ab, 3Ab) and buried
occupation layer (4Ab, 4Bw)
MS2/MS3 Magnetic Susceptibility System
MS2 Probe Handle
This device incorporates the electronics for both the MS2D and MS2F and is required
for connection of these sensors to the MS2 or MS3 meter. The handle is submersible to
the depth of the electronics unit (0.6m).
Dimensions: upper section
lower section
430mm length
360mm length
Connections: mechanical
11TPI ‘O’ ring sealed screw coupling
50 ohms TNC
MS2 Equipment Carrying Cases
Tough, lockable cases are available in a variety of sizes and carrying weights, to suit the
combination of instruments ordered. Interior cut-outs provide maximum protection for
the equipment.
Maximum dimensions (W x H x D)
710 x 310 x 570mm
Maximum weight
18.6kg including equipment
MS2/MS3 Susceptibility/Temperature System
This system measures the magnetic susceptibility of samples over the temperature
range -200°C to +850°C. It is used in the investigation of the magnetic properties of
minerals and for the determination of Curie transition temperatures.
The system comprises: the MS2 or MS3 Meter; MS2W Water Jacketed Sensor; MS2WF
Furnace; MS2WFP Power Supply Unit; and a self-contained water coolant supply,
fully interlocked to prevent the MS2WF Furnace operating without coolant flow. The
Geolabsoft software package (running under Windows®) collects data and displays the
results during the measurement sequence.
MS2W Water Jacketed Sensor
This water jacketed sensor has a 30mm diameter sample cavity for 10ml samples. The
water jacket thermally isolates the electronics from the sample cavity, giving excellent
temperature stability and keeping drift during the measurement sequence low.
For high temperature measurements to +850°C, the MS2WF Furnace and MS2WFP
Power Supply Unit are required. The sensor can also be used without them for
measurements from -200°C to room temperature, where the sample is cooled in liquid
nitrogen and allowed to warm slowly.
Calibration accuracy
1% (calibrated for 10ml sample)
Measurement period (MS2)*: x 1 range
x 0.1 range
2.4s SI (1.9s CGS)
24s SI (19s CGS)
Operating frequency
Drift during measurement
<2 x 10-5 SI (vol) (<2 x 10-6 CGS)/30 minutes with 2l/minute water flow through sensor
Dimensions: probe internal ø
overall (W x H x D)
96 x 65 x 255mm
Sensitive area
15 mm height – centre of cavity
Coolant (water) flow rate
2 litres/min minimum recommended
Maximum water pressure
300cm Hg
Connectors: water
13mm rod
Glass filled polycarbonate/glass
* MS3 measurement period is software selectable
MS2/MS3 Magnetic Susceptibility System
MS2WF Furnace
The heating element of the MS2WF Furnace is installed inside the cavity of the MS2W
Water Jacketed Sensor, for heating samples from room temperature to +850°C. The
element is wound with non-inductive platinum and mounted on a quartz cylinder to
ensure uniform heating of the sample, while insulation reduces the maximum external
temperature to around 100°C. A ceramic crucible, specially designed to fit onto the
thermocouple, is provided for granular or powder samples.
The sample temperature is displayed on a digital panel meter to a resolution of 0.1°C
when connected to a thermocouple, either type S (Pt/Pt-Rh: for measurements up to
+850°C) or type T (Cu/Cu-Ni: for measurement in the range -200°C to +350°C). The
sample temperature is also available as an analogue voltage.
Dimensions: overall (W x H x D)
heating cavity
ceramic crucible cavity
135 x 350 x 235mm
17mm ∅ 25mm usable height
13mm ∅ 20mm usable height
Silica/platinum/alumina/stainless steel
Electrical resistance
3Ω at room temperature
Power requirements
100W max. 28V DC at 3A
Internal magnetic field
Measured less than 0.05A/m
Operating temperature
850oC maximum intermittent use
Voltage/temperature ratio
Approx. 0.027V/oC with good thermal insulation
Fixed thermocouple (non magnetic, high temperature)
‘S’ (Pt/Pt. 10%Rh) built-in and permanently wired to base electronics
unit with adjustable height
Calibrated range
-50oC to 850oC
Separate thermocouple (non magnetic, low temperature)
‘T’ (Cu/Cu Ni) Remote connection via polarised plug and socket
Calibrated range
-250oC to +400oC
235 x 135 x 90mm
Retort stand dimensions
260 x 9.5mm
Digital thermometer
4 digit display with polarity
1 mV/oC via 4mm sockets
Serial output
RS232 via RS485/RS232 converter
Bits per character
1 start, 8 data, 2 stop, no parity
Baud rate
From GeoLabsoft program
ASCII string
2 x 4mm Va out
1 x 8-way polarised MS2WFP to MS2WF connection (Trident ringlock)
1 x polarised Cu/Cu.Ni. thermocouple connector
MS2/MS3 Magnetic Susceptibility System
MS2WFP Power Supply Unit
This unit supplies power to the MS2WF Furnace to heat the sample. The sample
temperature can be increased or decreased at a pre-selected linear rate, or maintained
at a pre-set level using manual controls.
Dimensions (W x H x D)
260 x 143 x 360mm
Power input (rear panel IEC inlet)
110V or 220V AC selectable, 200W max.
Power output
150W max.
Power lead colour code
Brown – LIVE
Green/Yellow - EARTH
Line fuse
2 A anti-surge 20 x 5mm
Output voltage
±20V max.
Minimum load resistance
Maximum output current
Maximum ripple voltage
0.2V p-p
Serial data I/O
9-way ‘D’ connectors : RS232
Output data format
see MS2WF specification
see MS2 specifications
8-way socket connections
0 V power
+ve furnace (active)
-ve furnace
0 V signal
1 mV/oC in
Rx data
Tx data
+15V out
9-way plug (MS2 Meter) connections
2 Tx
3 Rx
5 0V
9-way skt (Computer) connections
2 Tx
3 Rx
4 DTR link to 6 DSR
7 RTS Link to 8 CTS
5 OV
3-way skt (water cooling system)
1 +ve
2 –ve
3 Signal
The MS3 Meter has no display or controls because it is designed to be connected to a PC, laptop or PDA running the supplied
Bartsoft software. This provides a range of features to control the meter and display the measured results.
Main Features
• Adjustable measurement period to optimise the overall time taken and the required data resolution. This can more than halve the overall experimental time, compared to older MS2 Meter systems.
• User-definable measurement protocols provide a level of automation in the measurement process. Predefined protocols are
available for tasks such as individual sample tests, core logging, two-dimensional X-Y surveys and one-dimensional downhole
• Data display options including tabular format, with selectable data columns and X-Y chart plots.
• Automatic correction factors for non-standard sample volume, mass specific results and temperature drift.
Data collected can be saved in Bartsoft’s native format or copied into other applications (e.g. spreadsheets) for further analysis.
Versions available
• Bartsoft for Windows requires Windows 2000 / Windows XP / Windows Vista / Windows 7 / Windows 8 (both 32-bit and 64-bit).
• Bartsoft for Windows CE runs under Windows Mobile 6 and includes GPS compatibility, enabling magnetic susceptibility data to
be tagged with a GPS location. (This requires a Windows Mobile device with internal or external GPS.)
Note that Bartsoft for Windows can be used with the MS2 Meter. Most features will function, although the measurement period is
fixed at 1.0s or 0.1s by the meter. Bartsoft for Windows CE will not operate with the MS2 Meter.
This package is used with the MS2 Meter, MS2B Sensor and MS3 Meter to measure the anisotropy of magnetic susceptibility for
magnetic fabric analysis. A sample adaptor designed for 25mm diameter palaeomagnetic samples is supplied with the software.
The software operates under Windows 2000 / Windows XP / Windows Vista.
Geolabsoft software
This software for the MS2/MS3 Susceptibility/Temperature System runs under Windows 98 / Windows 2000 / Windows NT / Windows
XP / Windows Vista. Data is collected via a single RS232 serial interface and plotted in real time. Drift correction is applied at the end
of the measurement sequence.
Bartington Instruments Limited,
T: +44 (0)1993 706565
5, 10 & 11 Thorney Leys Business Park,
F: +44 (0)1993 774813
Witney, Oxford, OX28 4GE, England.
The specifications of the products described in this brochure are
subject to change without prior notice.
Bartington® is a registered trademark of Bartington Instruments Ltd.
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