Arrangement for ultrasonic temperature measurement using a reson

Thermal measuring and testing – Temperature measurement – By a vibratory effect

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

374119, G01K 1126

Patent

active

046503463

ABSTRACT:
The invention relates to an arrangement for ultrasonic temperature measurement. The arrangement combines an ultrasonic temperature sensor and an electronic operating circuit. The ultrasonic temperature sensor comprises an acoustic waveguide, a second acoustic wave propagating resonant element, which is exposed to the thermal conditions under measurement, and whose resonant frequency becomes an indication of the temperature, and decoupling means inserted between the waveguide and the resonant element to facilitate high "Q" operation of the sensor. The arrangement utilizes torsional waves if a solid waveguide is employed, or internal surface waves with axial symmetry if a hollow waveguide is employed. The sensor is excited by a pulsed CW source, whose carrier is retuned to the resonant frequency of the sensor, and measured as the indication of temperature. The electronic operating circuitry achieves improved accuracy in temperature measurement as the "Q" of the sensor increases.

REFERENCES:
patent: 3487690 (1970-01-01), Bell et al.
patent: 3540265 (1970-11-01), Lynnworth
patent: 3633423 (1972-01-01), Bell
"Flexible Capillary Ultrasonic Delay Lines", R. L. Rosenberg et al, Transactions on Sonics and Ultrasonics, vol. SU-24, No. 1, Jan. 1977, pp. 1-6.
"The Development of the Quartz Resonator as a Digital Temperature Sensor with a Precision of 1.times.10.sup.-4 ", A. Benjaminson et al, Temperature: Its Measurement and Control in Science and Industry, vol. 4, 1972, pp. 701-708.
"Ultrasonic Thermometry Using Resonance Techniques", J. F. W. Bell, Temperature: Its Measurement and Control in Science and Industry, vol. 4, 1972, pp. 709-713.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Arrangement for ultrasonic temperature measurement using a reson does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Arrangement for ultrasonic temperature measurement using a reson, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Arrangement for ultrasonic temperature measurement using a reson will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1785429

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.