Porosimeter with detection by capacity variations

Details Porosimeter with detection by capacity variations Porosimeter with detection by capacity variations

1983-10-27

1985-06-25

Levy, Stewart J.

Measuring and testing

With fluid pressure

Porosity or permeability

G01N 1508

Patent

active

045246050

ABSTRACT:
The invention relates to a mercury porosimeter, of the type in which the quantity of mercury which has penetrated into the pores of the substance to be analyzed is determined by measuring capacity variations in a cylindrical condenser, the inner armature of which consists of the mercury present in the capillary of a penetrometer containing the substance to be analyzed, the penetrometer being housed inside an autoclave. The porosimeter according to the invention is characterized in that the outer armature of the condenser is fixed to the autoclave body, in that the condenser dielectric is formed by the penetrometer capillary and by the oil introduced into the autoclave to transmit pressure variations to mercury, and in that said oil has the same dielectric constant as the glass forming the penetrometer capillary.

REFERENCES:
patent: 4272983 (1981-06-01), Sisti et al.

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