Viscometer module with crystal resonator-type sensor
First Claim
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1. A portable one-piece viscosity measuring device comprising:
- an instrument body;
a sensor disposed within the instrument body, including a thickness shear mode resonator having a portion in contacting relation with the fluid to be analyzed, a sensor circuit operably connected with the resonator disposed to generate first sensing signals corresponding to the damping of the resonator due to the fluid to be analyzed, and a temperature sensor disposed disposed to generate second sensing signals indicative of the temperature of the fluid; and
a microcontroller-based control circuit located in the instrument body disposed to receive the first and second sensing signals, to generate a viscosity value from the first and second sensing signals, to generate a viscosity value from the first and second sensing signals, and to provide an output to a display.
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Abstract
A portable viscometer includes an instrument body having an electrical control circuit disposed therein and sensor probe for immersion into a fluid to be analyzed. The sensing probe includes a crystal resonator-type sensor and a temperature sensor that provide sensing signals to the electrical control circuit indicative of fluid viscosity. The resultant viscosity is displayed and/or stored.
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Citations
8 Claims
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1. A portable one-piece viscosity measuring device comprising:
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an instrument body; a sensor disposed within the instrument body, including a thickness shear mode resonator having a portion in contacting relation with the fluid to be analyzed, a sensor circuit operably connected with the resonator disposed to generate first sensing signals corresponding to the damping of the resonator due to the fluid to be analyzed, and a temperature sensor disposed disposed to generate second sensing signals indicative of the temperature of the fluid; and a microcontroller-based control circuit located in the instrument body disposed to receive the first and second sensing signals, to generate a viscosity value from the first and second sensing signals, to generate a viscosity value from the first and second sensing signals, and to provide an output to a display. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A portable one-piece viscosity measuring device comprising:
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an instrument body; a viscosity sensor disposed within the instrument body, including a resonator having a portion immersed in the fluid to be analyzed, a sensor circuit operably connected with the resonator disposed to generate first sensing signals corresponding to the damping of the frequency of oscillation of the resonator when immersed in the fluid to be analyzed; a temperature sensor disposed to generate second sensing signals indicative of the temperature of the fluid; and a control circuit located in the instrument body disposed to generate a viscosity value from the first and second sensing signals and to provide an output to a display.
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Specification