Ultrasonic thermometer isolation standoffs

Details Ultrasonic thermometer isolation standoffs Ultrasonic thermometer isolation standoffs

1975-09-26

1977-05-03

Gill, James J.

Measuring and testing

Gas analysis

Moisture content or vapor pressure

G01K 1124

Patent

active

040206920

ABSTRACT:
A method is provided for minimizing sticking of the transmission line to the protective sheath and preventing noise echoes from interfering with signal echoes in an improved high temperature ultrasonic thermometer which includes an ultrasonic transmission line surrounded by a protective sheath. Small isolation standoffs are mounted on the transmission line to minimize points of contact between the transmission line and the protective sheath, the isolation standoffs serving as discontinuities mounted on the transmission line at locations where a signal echo is desired or where an echo can be tolerated. Consequently any noise echo generated by the sticking of the standoff to the protective sheath only adds to the amplitude of the echo generated at the standoff and does not interfere with the other signal echoes.

REFERENCES:
patent: 2486984 (1949-11-01), Rowe
patent: 3538750 (1970-11-01), Lynnworth
patent: 3633423 (1972-01-01), Bell
patent: 3633424 (1972-01-01), Lynnworth et al.
Tasman, H. A. et al. "The Ultrasonic Thermometer . . . . In High Temperature-High Pressures, vol. 4, pp. 477-481 (1972).

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