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Title: Method and apparatus for calibrating a linear variable differential transformer

A calibration apparatus for calibrating a linear variable differential transformer (LVDT) having an armature positioned in au LVDT armature orifice, and the armature able to move along an axis of movement. The calibration apparatus includes a heating mechanism with an internal chamber, a temperature measuring mechanism for measuring the temperature of the LVDT, a fixture mechanism with an internal chamber for at least partially accepting the LVDT and for securing the LVDT within the heating mechanism internal chamber, a moving mechanism for moving the armature, a position measurement mechanism for measuring the position of the armature, and an output voltage measurement mechanism. A method for calibrating an LVDT, including the steps of: powering the LVDT; heating the LVDT to a desired temperature; measuring the position of the armature with respect to the armature orifice; and measuring the output voltage of the LVDT.
Inventors:
 [1]
  1. North Huntingdon, PA
Issue Date:
OSTI Identifier:
941092
Assignee:
The United States of America as represented by the United States Department of Energy (Washington, DC) PNRO
Patent Number(s):
6,844,720
Application Number:
10/216,465
Contract Number:
AC11-98PN38206
Research Org:
BECHTEL BETTIS, INC.
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION