发明名称 |
PRESSURE AND DIFFERENTIAL PRESSURE DETECTORS AND TRANSMITTER FOR USE IN HOSTILE ENVIRONMENT |
摘要 |
<p>A pressure or differential pressure detector is hardened to be suitable for use in a hostile environment, for example, under high pressure, temperature, and radiation conditions which could possibly be present in the containment vessel of a nuclear generating plant. A linear variable differential transformer (LVDT) disposed within a detector housing is designed to sustain temperatures up to or exceeding 500.degree.F. A signal detecting and conditioning circuit disposed remote from the detector housing includes demodulator means for producing X and Y demodulated signals respectively from A and B secondary windings of the LVDT, a summing circuit for producing a temperature analog voltage X+Y, a subtractor for providing a differential pressure analog voltage X-Y, and a multiplier for multiplying the differential pressure analog voltage X-Y by a temperature compensation voltage X+Y-Ref based on the temperature analog voltage to provide a resulting temperature-compensated differential pressure analog signal.</p> |
申请公布号 |
CA1192055(A) |
申请公布日期 |
1985.08.20 |
申请号 |
CA19830435348 |
申请日期 |
1983.08.25 |
申请人 |
PEERLESS NUCLEAR CORPORATION |
发明人 |
DI NOIA, EMANUEL J.;BREUNICH, THEODORE R. |
分类号 |
G01L9/00;G01L9/10;G01L13/06;G08C19/02;(IPC1-7):G01L9/10 |
主分类号 |
G01L9/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|