University of Surrey

Test tubes in the lab Research in the ATI Dance Research

The design and development of frequency-modulating instruments for measuring fluid density and pressure.

Agar, Joram. (1971) The design and development of frequency-modulating instruments for measuring fluid density and pressure. Doctoral thesis, University of Surrey (United Kingdom)..

Full text is not currently available. Please contact sriopenaccess@surrey.ac.uk, should you require it.

Abstract

This paper describes the development and design of two frequency modulating instruments for the measurement of fluid density and pressure. The reasons for choosing frequency modulation for the signal transmission are discussed, and the advantages it offers to Process Control. Effects like decay in cable insulation resistance, and various requirements of Intrinsic-safety, are analysed in detail. Both instruments use a vibrating body as a sensing element and it is shown that in each case, by the appropriate design procedure, the response is restricted to the parameter to be measured, other effects such as temperature variations being ignored. A comparison is made with existing instruments, whose limitations are analysed and used to draw up the desired specification for the improved instrument. The advantages and disadvantages are discussed, and the design and methods used are described in detail.

Item Type: Thesis (Doctoral)
Divisions : Theses
Authors :
NameEmailORCID
Agar, Joram.
Date : 1971
Depositing User : EPrints Services
Date Deposited : 09 Nov 2017 12:15
Last Modified : 09 Nov 2017 14:43
URI: http://epubs.surrey.ac.uk/id/eprint/843673

Actions (login required)

View Item View Item

Downloads

Downloads per month over past year


Information about this web site

© The University of Surrey, Guildford, Surrey, GU2 7XH, United Kingdom.
+44 (0)1483 300800