Tuning fork vibration-type viscosity measuring apparatus
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United States of America Patent
Stats
-
Mar 8, 1988
Grant Date -
N/A
app pub date -
Dec 12, 1986
filing date -
Dec 12, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A vibration-type viscosity measuring apparatus having a pair of vibrator subassemblies that can be resonated as a tuning fork. Each of the pair of vibrator subassemblies constituting a tuning fork has at its free end a sensor plate comprised of a thin metal plate to be inserted into a sample. Each vibrator subassembly has a center line of vibration about which the vibrator subassembly vibrates and a center of gravity aligned on the center line of vibration. A detector is provided for detecting electrically the vibration amplitude of the vibrator subassemblies that are driven together with the sensor plates at the same frequency in reverse phase relation to each other. The vibration amplitude is changed due to the viscosity resistance of the sample applied to the sensor plates. A thermometer probe is provided at the intermediate point between the sensor plates and can be inserted together with the pair of sensor plates into the sample thereby simultaneously measuring the viscosity and the temperature of the sample.
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Cited Art Landscape
Patent Citation Ranking
- 25 Citation Count
- G01N Class
- 0 % this patent is cited more than
- 37 Age