Capillary rheometer plunger pressure transducer and measurement

Details Capillary rheometer plunger pressure transducer and measurement Capillary rheometer plunger pressure transducer and measurement

1991-04-04

1993-05-11

Williams, Hezron E.

Measuring and testing

Liquid analysis or analysis of the suspension of solids in a...

Viscosity

73715, 73726, G01N 1108

Patent

active

052091074

ABSTRACT:
A capillary rheometer including a plunger pressure transducer assembly which contains a liquid metal fill capillary passage therein. When the plunger is urged downward onto the melted polymer, a diaphragm at the end of the plunger senses the pressure within the melted polymer and transmits this pressure to the liquid metal fill. An additional diaphragm disposed in the opposite end of the plunger pressure transducer assembly senses this transmitted pressure within the liquid metal fill for an accurate indication of the pressure therein.

REFERENCES:
patent: 3203225 (1965-08-01), Sieglaff et al.
patent: 3758776 (1973-09-01), Frohne et al.
patent: 4313339 (1982-02-01), Nichols et al.
patent: 4680958 (1987-07-01), Ruelle et al.

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