The MS2 system is the
international standard for the measurement of magnetic susceptibility in
environmental sciences. The MS2 meter is a portable instrument with
sensors for field and laboratory use. The system is used in geomorphology,
geophysics, archaeology and mineral exploration.
The MS2 is a versatile system
with a range of individually calibrated sensors. It has a high resolution
and accuracy, excellent temperature stability and very low measurement
drift. It provides non destructive measurements and has a low operating
frequency so measurements are not affected by sample conductivity.
Readings are taken in around 1 second.
 MS2 Meter - The meter has a sensitivity of
2x10^-6 SI (2x10^-7 CGS) with a 4 digit display in SI or CGS units and an
RS232 serial interface. Software and a field data logger are available for
PC compatibles. The meter can be used with any of the following sensors:
MS2B - Laboratory sensor for dual frequency
measurements on 25.4mm cores or 10ml samples.
MS2C - Range of core logging sensors with
diameters from 36 to 162mm for measurements on sediment cores with no
metal cladding. Automated core analysis systems are available.
MS2D - Field survey loop with 185mm diameter for
surface measurements.
MS2E1 - Sensors with 3.8x10.5mm area of response
for high resolution surface measurements of split cores.
MS2E2 - Similar to MS2E1 but with
different geometry for magnetic component screening.
MS2F - Probe with 15mm diameter for high
resolution surface measurements.
MS2G - Single frequency sensor for 1ml samples.
MS2 Handle - With integral electronics for
MS2D and MS2F probes.
Equipment Carrying Case - For maximum protection
of the equipment.
MULTISUS - Software for laboratory measurements
with MS2B, MS2C, MS2E or MS2G sensors.
AMS-BAR - Software for for the measurement of the
anisotropy of magnetic susceptibility in conjunction with the MS2B sensor.
Magnetic
Susceptibility Meter Model MS2
 Features of the MS2 meter include a
choice of SI or CGS units, single or continuous measurements, 4 digit plus
sign LCD, RS232 interface and an optional analog output. Internal
batteries are rechargeable from the mains or a vehicle dashboard.
Specification
|
Display
-
x1 range
x0.1 range
|
1-9999
0.1-999.9
|
Display
exponent -
volume specific
mass specific
|
10^-6
CGS or 10^-5 SI
10^-6 CGS or 10^-8 SI
|
Operating temperature
range
|
-10°C to 40°C
|
Enclosure
|
high impact
ABS
|
Weight
|
1.3kg
|
Dimensions
|
255 x 158 x
50mm
|
Sensor
cable
|
50 ohms TNC
to TNC, 1 metre length, alternative lengths to 100 metres available
on request
|
Internal
batteries
|
14 x 0.45Ah
sealed Nickel/Cadmium batteries in removable cassette, 8 hours
continuous use without recharge
|
Battery
charger inlet
|
2.1mm
socket, dc polarity protected, 6-14V, 100mA maximum
|
RS232
interface
|
standard
baud rate 1200. (9600 baud rate available on
request)
|
Interface
connector
|
4-way rear
panel Fischer socket
|
Accessories
|
Instrument stand, vehicle
dashboard connector 12V dc, carrying bag, RS232 interface cable
(2m)
|
Mains adaptor/battery charger
- 110V or 220V (as requested)
|
Options - Service manual,
equipment carrying case, 10cc polystyrene sample
bottles
|
Booklet - Environmental
Magnetic Susceptibility - Using The Bartington MS2 System - © Prof.
J. A. Dearing 1994
|
Sensor Type
MS2B
 This sensor accepts 10ml and 20ml cylindrical bottles,
25.4mm and 23mm cubic boxes, 35mm pots and 25.4mm cylindrical cores. A
manually operated platen allows the sample to be inserted and positioned
centrally within the sample cavity.
The sensor is used
for mass or volume specific susceptibility measurements of standard
paleomagnetic samples in studies of rock and mineral magnetism. It is also
used in conjunction with the AMS-BAR software and sample adaptor for
measurements of the anisotropy of susceptibility.
The unique dual frequency
facility permits identification of ferrimagnetic grains close to the
superparamagnetic stable single domain transition. This information is
critical to many aspects of interpretation, for example in studies of
weathering and soil formation, fossil soil identification and
characterisation, and sediment or dust source investigations.
In archaeology, precise
measurements with this sensor confirm and enhance the evidence of ancient
human occupation and land use obtained with the MS2 field sensors.
Calibration
accuracy
|
1% (10ml
calibration sample provided)
|
Measurement
period
|
1.2 seconds
on 1.0 range
|
12 seconds
on 0.1 range
|
Operating
frequencies
|
0.465kHz
and 4.65kHz
|
Drift - at room
temperature
|
<2 x 10^-6 CGS in 3 minutes
after 5 minutes operation
|
Enclosure
|
ABS
|
Weight
|
0.8kg
|
Dimensions
|
200 x 110 x
110mm
|
Sensor Type
MS2C
 A series of loop sensors, ranging from 36 to 162mm in
diameter, is available for high resolution volume susceptibility
measurements on whole cores. They are suitable for measuring any type of
peat, lake or marine sediment core, provided it is not metal clad.
As a result of their rugged construction these sensors are ideally
suited for laboratory, field or shipboard use.
Data obtained with these
sensors are of great value in prospection, core correlation and multiple
core studies and in identification of paleoclimatic sequences.
Optimum measurement accuracy
is achieved with 5-10mm core clearance. Calibration graphs are provided
for intermediate core sizes.
These sensors can be used
with automated core analysis systems - details on request.
Internal diameter of
loop
|
36, 40, 45, 60, 72, 80, 90, 100,
125, 130, 135, 140, 145, 150, 160 or 162mm standard (other sizes
between 40 and 200mm are available at an additional
cost)
|
Calibration
accuracy
|
5%
|
Measurement
period
|
0.9 seconds
on 1.0 range
|
9 seconds
on 0.1 range
|
Operating
frequency
|
0.565kHz
|
Drift - at room
temperature
|
<2 x 10^-6 CGS in 10 minutes
after 5 minutes operation
|
Enclosure
|
white
polyacetal
|
Weight
|
2-2.65kg
depending on loop diameter
|
External
dimensions
|
290 x 200 x
144mm
|
Search Loop
Type MS2D
 This loop is designed for rapid assessment of the
concentration of ferrimagnetic minerals in the top 60mm (approximately) of
the land surface. It is used in studies of slope processes and is a
powerful tool in archaeological prospecting, as human habitation leads to
an irreversible magnetic enhancement of the soil, mainly as a result of
burning. It has been used in conjunction with handle extension tubes, to
trace the movement of artificially enhanced river bedload, to depths of 5
metres. The MS2D loop can only be operated in conjunction with the MS2 probe handle.
Depth of
response
|
50% at 15mm, 10% at
60mm
|
Measurement
period
|
0.5 seconds
on 1.0 range
|
5 seconds
on 0.1 range
|
Operating
frequency
|
0.958kHz
|
Drift - at room
temperature
|
<20 x 10^-6 CGS in 20 minutes
after 20 minutes operation
|
Enclosure
|
reinforced
epoxy
|
Weight
|
0.5kg
|
Dimensions
|
Mean
diameter 185mm
|
Overall
height 100mm
|
See also the MS2 probe handle with electronics
unit
|
Sensor Type MS2E1
 This sensor is designed for high spatial resolution
measurements of magnetic susceptibility along flat surfaces with a
roughness of <1mm, particularly for split drill or soft sediment cores
with no metal cladding.
The sensitive area of the probe, as defined by
50% maximum response is in the form of a rectangle 3.8mm x 10.5mm. The
position of the long axis is identified by marks on the circumference of
the ceramic cylinder. Soft or wet cores may be protected by a thin
(<0.05mm) plastic film during the measurement to avoid smearing. The
sensor is connected directly to the MS2 meter by a cable which may be up
to 30m (standard 5m) in length.
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
|
1.2 seconds
on 1.0 range
|
12 seconds
on 0.1 range
|
Operating
frequency
|
2kHz
|
Drift - at room
temperature
|
<2 x 10^-6 CGS in 10 minutes
after 5 minutes operation
|
Enclosure
|
aluminium
and ceramic
|
Weight
|
0.22kg
|
Dimensions
|
64 x 25 x
140mm
|
Sensor Type
MS2E2
 This sensor is identical to the MS2E1 except that the
ceramic tube housing the sensor is set in the face of the metal enclosure.
It is designed for magnetic screening of small parts such as aneurism
clips or other implant components. Due to the high measuring frequency the
sensor is very sensitive to conductors, and is therefore not suitable for
solid metal samples except where they have a cross section of less than
about 1 square mm. The specification is identical to the MS2E1 except the
dimensions which are 64 x 50 x 100mm.
Probe Type
MS2F
 This miniature probe is ideal for the stratigraphic
study of exposed geological and archaeological sections. It is also used
where difficult surface conditions prevent good contact with the MS2D loop. The probe can only be operated in conjunction with the MS2 probe handle.
|
