Measuring and testing – Instrument proving or calibrating – Fluid pressure
Reexamination Certificate
2007-09-11
2007-09-11
Raevis, Robert (Department: 2856)
Measuring and testing
Instrument proving or calibrating
Fluid pressure
Reexamination Certificate
active
10991219
ABSTRACT:
A dynamic pressure testing or calibration system packaged as a portable unit for characterizing pressure sensors, such as transducers. Embodiments are packaged for carry on the body, are battery-operated, compatible with existing transducer mounts, and quickly learned and easily used by a single operator. The system supplies a pre-specified impulse (pressure pulse) of fluid, preferably a benign gas, such as air, or an inert gas such as helium or nitrogen. In select embodiments, the gas pulse has a fast rise time and its amplitude may be varied over a pre-specified dynamic range. For example, the rise time may emulate that of an impulse created during an explosion by a resultant pressure wave, i.e., less than 100 microseconds. Embodiments also incorporate a data acquisition capability that accurately captures and records both the supplied impulse and the response of the sensor under test.
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Chiarito Vincent P.
Shirley Fred D.
Walter Patrick
Weis Stephen
Woodson Stanley C.
Baugher, Jr. Earl H
Raevis Robert
The United States of America as represented by the Secretary of
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