Measuring and testing – Instrument proving or calibrating – Volume of flow – speed of flow – volume rate of flow – or mass...
Patent
1994-07-26
1995-04-04
Raevis, Robert
Measuring and testing
Instrument proving or calibrating
Volume of flow, speed of flow, volume rate of flow, or mass...
G01L 2700
Patent
active
054026660
ABSTRACT:
A method and apparatus for precise measurement of low differential pressures existing between known high reference pressures and high test pressures. One or more scanner modules are used, each module enabling a reference pressure to be applied to a set of differential pressure sensors located in the module. Adding a second module allows a different reference pressure to be applied to a second set of sensors located in the second module, and using additional modules allows additional reference pressures to be applied to more sets of sensors. Each module enables the application of known calibration pressures to the sensors incorporated in the module. The present method and apparatus are more economical and less complex compared to prior art systems in which manifolds and associated valving are not integral with the modules but are located in separate patch panels and have to be connected to each sensor module by a multiplicity of pneumatic jumper lines.
REFERENCES:
patent: 3262305 (1966-07-01), Dawley
patent: 4909063 (1990-03-01), Olsen
patent: 4926674 (1990-05-01), Fossum et al.
Brock, "Centralized in Place Pressure Calibration System for Multiple Turbine Engine Aerodynamic Pressure Measurement Systems", Conference: Instrumentation in the Aerospace Industry vol. 26 Advances in Test Measurement, vol. 17, Proceedings of the 26th Interenational Instrumentation Symposium Seattle, Wash., USA. (5-8 May 1980).
McLellan J. F.
Raevis Robert
Scanivalve Corporation
LandOfFree
Method and apparatus for precise measurement of differential pre does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for precise measurement of differential pre, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for precise measurement of differential pre will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2373993