Variable reluctance displacement transducer temperature compensated to 650$sup 0$F

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Description

In pressurized water reactor tests, compact instruments for accurate measurement of small displacements in a 650$sup 0$F environment are often required. In the case of blowdown tests such as the Loss of Fluid Test (LOFT) or Semiscale computer code development tests, not only is the initial environment water at 650$sup 0$F and 2200 psi but it undergoes a severe transient due to depressurization. Since the LOFT and Semiscale tests are run just for the purpose of obtaining data during the depressurization, instruments used to obtain the data must not give false outputs induced by the change in environment. A LOFT ... continued below

Physical Description

Pages: 13

Creation Information

Creator: Unknown. January 1, 1975.

Context

This article is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. More information about this article can be viewed below.

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  • Aerojet-General Corporation
    Publisher Info: Aerojet-General Corp., Sacramento, Calif. (USA)
    Place of Publication: Sacramento, California

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Description

In pressurized water reactor tests, compact instruments for accurate measurement of small displacements in a 650$sup 0$F environment are often required. In the case of blowdown tests such as the Loss of Fluid Test (LOFT) or Semiscale computer code development tests, not only is the initial environment water at 650$sup 0$F and 2200 psi but it undergoes a severe transient due to depressurization. Since the LOFT and Semiscale tests are run just for the purpose of obtaining data during the depressurization, instruments used to obtain the data must not give false outputs induced by the change in environment. A LOFT rho v$sup 2$ probe and a Semiscale drag disk are described. Each utilizes a variable reluctance transducer (VRT) for indication of the drag-disk location and a torsion bar for drag-disk restoring force. The VRT, in addition to being thermally gain and null offset stable, is fabricated from materials known to be resistant to large nuclear radiation levels and has successfully passed a fast neutron radiation test of 2.7 x 10$sup 17$ nvt without failure. (auth)

Physical Description

Pages: 13

Notes

Dep. NTIS

Source

  • 8. transducer workshop, Dayton, Ohio, USA, 21 Apr 1975

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  • Report No.: CONF-750431--3
  • Grant Number: None
  • Office of Scientific & Technical Information Report Number: 4170606
  • Archival Resource Key: ark:/67531/metadc866104

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Creation Date

  • January 1, 1975

Added to The UNT Digital Library

  • Sept. 16, 2016, 12:32 a.m.

Description Last Updated

  • Feb. 20, 2017, 12:26 p.m.

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Variable reluctance displacement transducer temperature compensated to 650$sup 0$F, article, January 1, 1975; Sacramento, California. (digital.library.unt.edu/ark:/67531/metadc866104/: accessed September 25, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.