asclogodrop2.jpg (8279 bytes)   Bartington MS2E High Resolution Surface Sensor
The MS2E1 sensor is designed to perform high resolution measurements of magnetic susceptibility along flat surfaces which have a roughness less than 1 mm. It is expected that the sensor will most frequently be used to investigate lamination in split drill or soft sediment cores. Soft or wet cores should be protected by a thin plastic film of a thickness less than 0.05 mm. This also prevents the pick-up of potentially contaminating material on the sensor's measurement surface which would otherwise create inaccuracies.

The MS2E1 sensing surface is at the end of a ceramic tube. The tube is mounted on a metal enclosure which houses the electronic circuitry. The sensor is connected directly to the MS2 meter via a TNC-TNC coaxial cable which may be up to 30 meters in length.

The sensing surface is protected by a thin ceramic (aluminium oxide) plate which is held in intimate contact with the surface of investigation during the measurement period. The full-width-half-maximum (FWHM) response measured in two axes in the plane of the sensing surface has linear dimensions of 3.8 mm (short axis) x 10.5 mm (long axis). The depth response below the surface of investigation falls to 50% at 1 mm and 10% at 3.5 mm. A complete measurement is accomplished in 1.3 seconds when the MS2 meter is set to x1.0 CGS and the sensor is calibrated to read true K when in contact with a large (infinite depth) surface.

Specifications
Area of response: 3.8 mm x 10.5 mm
Depth of response: 50% at 1 mm, 10% at 3.5 mm
Measurement period: 1.3 seconds on 1.0 range
Operating frequency: 2 kHz
Drift - at room temperature: <2 x 10 -6 CGS in 10 min.
after 5 min. operation
Enclosure materials: Aluminum and ceramic
Dimensions: 63 x 27 x 140 mm
Weight: 220 g
Connection: Directly to MS2 meter
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