Simple accurate mercury porosity meter - is cylinder contg. specimen and mercury subjected to press. of piston sealing chamber

摘要

The chamber internal press. is measured by strain gauges, a small press. gauge of small dead volume, or by measuring the force acting on the piston. The piston seals the chamber. Its position can be directly measured and can be varied by using a pressing device. The measurement involves a second, identical porosimeter acting as a reference vessel but without a specimen body in its chamber. This enables the mercury compressibility and container press. expansion to be allowed for.