Optical refractometer

Details Optical refractometer Optical refractometer

1980-05-13

1982-12-21

Gill, James J.

Measuring and testing

Miscellaneous

73 30, 73384, 356128, 374142, G01W 102, G01N 900

Patent

active

043642713

ABSTRACT:
A terrestrial refractometer comprising a gastight enclosure of substantially invariant transverse section and having a linearly movable endwall which varies in position in accordance with ambient temperature and pressure, the enclosure containing a fixed mass of a gas which at least approximates to an ideal gas; sensing means responsive to the linear position of the endwall; and compensating means arranged to apply a compensating factor which is proportional to the linear movement by the endwall from its position under conditions of standard temperature and pressure.

REFERENCES:
patent: 4000652 (1977-01-01), Wiklund

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