Fluid property measuring device
AssigneeThe United States of America as represented by the Secretary of the Army
InventorGeorge Mon
Life of this patent
Estimating the term…
Abstract
Presented is a fluid property measuring device which can be used to measure he viscosity, the density, the volumetric flow rate, and the mass flow rate, of a fluid without using moving parts. The fluid property measuring device comprises a linear fluid resistor, a nonlinear resistor, and a linear, fluid property independent, volumetric flowmeter, Two nonlinear resistors, or two linear resistors, may be used instead of a linear and nonlinear resistor. The linear, fluid property independent, volumetric flowmeter comprises a fluidic negative feedback oscillator in fluid connection with a fluidic buffer laminar proportional amplifier.
Claims11
A device for measuring viscosity, density, volumetric flow rate, and mass flow rate of a gas or liquid comprising:
- a. a laminar flow fluid source;
- b. a first fluid resistor in fluid connection with said fluid source;
- c. a second fluid resistor in fluid connection with said first fluid resistor;
- d. a first pressure transducer to measure the pressure drop across said first fluid resistor;
- e. a second pressure transducer to measure the pressure drop across said said fluid resistor;
- and
- f. a fluidic linear flowmeter in fluid connection with said second fluid resistor.
A device for measuring viscosity, density, volumetric flow rate, and mass flow rate of a gas or liquid comprising:
- a laminar flow fluid source;
- a first fluid resistor in fluid connection with said fluid source;
- a second fluid resistor in fluid connection with said first fluid resistor;
- a first pressure transducer to measure the pressure drop across said first fluid resistor;
- a second pressure transducer to measure the pressure drop across said second fluid resistor;
- a negative feedback oscillator in fluid connection with said second fluid resistor, said negative feedback oscillator comprising a laminar proportional amplifier, a first feedback resistor, and a second feedback resistor;
- and
- a buffer laminar proportional amplifier in fluid connection with said negative feedback oscillator.
Dependencies are inferred from the claim text.