LINEAR VARIABLE DIFFERENTIAL TRANSFORMERS - PRACTICAL HINTS

This article described the design of a new transducer of the LVDT (linear variable differential transformer) type. Instead of the traditional configuration, with three coils all enclosed by the same magnetic circuit, two separate pot and disc assemblies were employed, with each assembly consisting of half the primary winding and one secondary winding. These were mechanically coupled so that the air gap of one assembly was reduced while that of the other increased. Electronically the two halves of the primary were connected in series addition and the two secondaries in series opposition. Mechanically the two halves of the device could be physically remote from each other provided that the mechanical coupling between them was completely rigid. Full details of the experimental model were provided in this paper, as was the method to set the air gap using a travelling microscope.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00392103
• Corporate Authors:

  BRITISH SOCIETY FOR STRAIN MEASUREMENT

  SUITE 7 2ND FLOOR, EXCHANGE BUILDING, QUAYSIDE
  Newcastle Upon Tyne,   United Kingdom 
• Authors:
  • Collins, S J
• Publication Date: 1989-2

Language

• English

Media Info

• Pagination: p. 25-6
• Serial:
  • Strain
  • Volume: 25
  • Issue Number: 1
  • Publisher: British Society for Strain Measurements
  • ISSN: 0039-2103

Subject/Index Terms

• TRT Terms: Deformation; Measuring instruments; Nondestructive tests; Strain gages; Transducers
• ITRD Terms: 6155: Apparatus (measuring); 5595: Deformation; 6216: Non destructive testing; 5562: Strain gauge; 6140: Transducer

Filing Info

• Accession Number: 00492951
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Files: ITRD, TRIS
• Created Date: May 31 1990 12:00AM