Bohlin Instruments Limited

Richard William Hall

A rotational rheometer is provided with a heat control cup located around a measuring cup having a wall thickness decreasing gradually from the bottom of the cup to its outer rim. Temperature of the heat control cup is maintained by a heat pump. The heat controlled cup has a wall thickness which is narrow at or adjacent the open end than the thickness adjacent the base of the cup.

Rotational rheometer

A rheometer has temperature control means which include a bath through which liquid is circulated, so that it will completely immerse both the upper and lower probes or plates between which a sample, whose rheological are being investigated, is located. This allows the temperature of the sample to be closely controlled to within 0.2.degree. C. of a selected temperature. The rheometer is particularly suitable for measuring the properties of bitumous materials which are extremely temperature sensitive.

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Wiltshire, United Kingdom

Richard William Hall