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 (aluminum 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.
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|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)
|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