Method and apparatus for measuring the density of fluids

Details Method and apparatus for measuring the density of fluids Method and apparatus for measuring the density of fluids

1988-06-24

1990-09-11

Lall, Parshotam S.

Boots, shoes, and leggings

374 43, 374 45, 73 3001, 73 32R, G01N 900

Patent

active

049567934

ABSTRACT:
The specific gravity, l, of a fluid of interest is determined based on thermal conductivity, k, and specific heat, c.sub.p, of the fluid of interest. An embodiment uses proximately positioned resistive heater and thermal sensor elements coupled by the fluid of interest. Pulses of electrical energy are applied to the heater of a level and duration such that both a transient change and a substantially steady-state temperature occur in the sensor. The k of the fluid of interest is determined based upon sensor output at steady-state elevated temperature, c.sub.p of the fluid of interest is determined based upon the rate of change of sensor output during a time interval of transient temperature change in the sensor, and l is determined from k and c.sub.p.

REFERENCES:
patent: 3672205 (1972-06-01), Leidenfrost
patent: 3821895 (1974-07-01), Sumikawa et al.
patent: 3913379 (1975-10-01), Ruez et al.
patent: 4011746 (1977-03-01), Weitz, Jr. et al.
patent: 4063447 (1977-12-01), Mathison
patent: 4123934 (1978-11-01), Hoht
patent: 4164862 (1979-08-01), Jackson
patent: 4177669 (1979-12-01), Wenger
patent: 4254654 (1981-03-01), Clouser et al.
patent: 4461166 (1984-07-01), Gatten et al.
patent: 4478076 (1984-10-01), Bohrer
patent: 4478077 (1984-10-01), Bohrer et al.
patent: 4501144 (1985-02-01), Higashi et al.
patent: 4527418 (1985-07-01), Arcara
patent: 4590579 (1986-05-01), Erb
patent: 4630938 (1986-12-01), Piorkowska-Palczewska et al.
patent: 4651564 (1987-03-01), Johnson et al.
patent: 4671099 (1987-06-01), Lazarre
patent: 4683159 (1987-07-01), Bohrer et al.
patent: 4735082 (1988-04-01), Kolloff
patent: 4807151 (1989-02-01), Citron
patent: 4818977 (1989-04-01), Alexander

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