| US 7,530,274 B2 | ||
| Apparatus for providing an output proportional to pressure divided by temperature (P/T) | ||
| Anthony D. Kurtz, Saddle River, N.J. (US); and Joesph Van DeWeert, Maywood, N.J. (US) | ||
| Assigned to Kulite Semiconductor Products, Inc., Leonia, N.J. (US) | ||
| Filed on Aug. 30, 2006, as Appl. No. 11/512,469. | ||
| Application 11/512469 is a continuation in part of application No. 11/431167, filed on May 09, 2006, granted, now 7,347,098. | ||
| Prior Publication US 2007/0295095 A1, Dec. 27, 2007 | ||
| This patent is subject to a terminal disclaimer. | ||
| Int. Cl. G01L 7/00 (2006.01) | ||
| U.S. Cl. 73—714 | 26 Claims |
| 1. A system for sensing at least one physical characteristic associated with an engine comprising a turbine having a plurality
of blades turning inside a casing, said system comprising:
a casing coupled with the turbine, said casing having a longitudinal port, said port extending transverse to said casing with
a first end of said port opening inside said casing; and
a pressure transducer mounted substantially adjacent to said casing, in said port, said pressure transducer facing said first
end, said port communicating to said pressure transducer a first pressure in the presence of said turbine blades and a second
pressure when said turbine blade is not present;
wherein, said pressure transducer has a frequency response capability which is a multiple of the blade passing frequency,
and
a processor receiving said first and second pressure outputs to determine a clearance between said blades and casing.
|