ISSN:
1089-7623
Source:
AIP Digital Archive
Topics:
Physics
,
Electrical Engineering, Measurement and Control Technology
Notes:
A new capillary flow viscometer is presented, based on optical measurements of the refractive index. The apparatus consisting mainly of two pressure vessels, a capillary, and a Michelson interferometer for refractive index measurements is described together with the experimental procedure. The viscosity is computed with the Poiseuille formula tacking into account perfect gas variations. The accuracy of the viscometer is then evaluated and tested using three different gases: carbon dioxide, methane, and sulfur hexafluoride. As this technique can easily be automated we think that it will be interesting for practical purposes. Moreover, this technique can be improved to produce results of higher accuracy and it can also be applied with a few modifications to other media like supercritical fluids. © 1995 American Institute of Physics.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.1145405
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