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GB1375862A - - Google Patents

Info

Publication number
GB1375862A
GB1375862A GB811971A GB811971A GB1375862A GB 1375862 A GB1375862 A GB 1375862A GB 811971 A GB811971 A GB 811971A GB 811971 A GB811971 A GB 811971A GB 1375862 A GB1375862 A GB 1375862A
Authority
GB
United Kingdom
Prior art keywords
tube
differential pressure
transmitter
cell
densitometer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB811971A
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to GB811971A priority Critical patent/GB1375862A/en
Publication of GB1375862A publication Critical patent/GB1375862A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N11/00—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties
    • G01N11/02—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by measuring flow of the material
    • G01N11/04—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by measuring flow of the material through a restricted passage, e.g. tube, aperture
    • G01N11/08—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by measuring flow of the material through a restricted passage, e.g. tube, aperture by measuring pressure required to produce a known flow

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Measuring Fluid Pressure (AREA)

Abstract

1375862 Viscometer BRITISH PETROLEUM CO Ltd 3 Feb 1972 [30 March 1971] 8119/71 Headings G1N and G1S A kinematic viscometer comprises a hydraulic resistance 5 being a tube at least 50 cms. long and of circular cross-section bore and an internal diameter of 2 to 5 mm., a pump 3 adapted to transmit a liquid through the tube, a differential pressure transmitter 7 connected in parallel with the tube and a densitometer connected in series with the tube. It is stated that absolute viscosity equals kinematic viscosity times density, so that since the differential pressure across the tube represents the absolute viscosity of the liquid flowing through it, the kinematic viscosity may be calculated from the signals on lines 8, 17 from the transmitter 7 and densitometer respectively. The transmitter 7 produces an electrical output signal. The densitometer is a cell 10 containing air bubbler tubes 11, 12 at different depths in the cell and the differential pressure between the tubes is adjusted by valves 13, 14 until air bubbles out at the same rate from the tubes when the differential pressure transmitter 16 transmits a signal on line 17 representing density of liquid in cell 10. Reference has been directed by the Comptroller to Specification 1246643.
GB811971A 1972-02-03 1972-02-03 Expired GB1375862A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB811971A GB1375862A (en) 1972-02-03 1972-02-03

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB811971A GB1375862A (en) 1972-02-03 1972-02-03

Publications (1)

Publication Number Publication Date
GB1375862A true GB1375862A (en) 1974-11-27

Family

ID=9846135

Family Applications (1)

Application Number Title Priority Date Filing Date
GB811971A Expired GB1375862A (en) 1972-02-03 1972-02-03

Country Status (1)

Country Link
GB (1) GB1375862A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2357887A1 (en) * 1976-07-09 1978-02-03 Charbonnages Ste Chimique Variable shear rate rheometer for monitoring continuous polymerisation - esp. for prodn. of various grades of high pressure polyethylene
US4157029A (en) * 1977-11-08 1979-06-05 Societe Chimique des Charbonnages -- CdF Chimie Rheometer
EP0068549A1 (en) * 1981-07-01 1983-01-05 Shell Internationale Researchmaatschappij B.V. Method and apparatus for determining cold flow properties of liquid material
EP3348991A1 (en) * 2017-01-12 2018-07-18 Wolfgang Belitsch Viscometer and device for measuring dynamic and kinematic viscosity

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2357887A1 (en) * 1976-07-09 1978-02-03 Charbonnages Ste Chimique Variable shear rate rheometer for monitoring continuous polymerisation - esp. for prodn. of various grades of high pressure polyethylene
US4157029A (en) * 1977-11-08 1979-06-05 Societe Chimique des Charbonnages -- CdF Chimie Rheometer
EP0068549A1 (en) * 1981-07-01 1983-01-05 Shell Internationale Researchmaatschappij B.V. Method and apparatus for determining cold flow properties of liquid material
US4484821A (en) * 1981-07-01 1984-11-27 Shell Oil Company Method and apparatus for determining the no-flow temperature of a liquid
EP3348991A1 (en) * 2017-01-12 2018-07-18 Wolfgang Belitsch Viscometer and device for measuring dynamic and kinematic viscosity

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee