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Title:
一体的に集積された圧力センサを備えた微小スロット粘度計
Document Type and Number:
Japanese Patent JP2007528501
Kind Code:
A
Abstract:
An improved micro slit viscometer includes a combined micrometer depth rectangular slit flow channel (22) with monolithically integrated multiple pressure sensors in the flow channels and a pumping system that injects a test sample to the channel at a desired flow rate. Pressure sensing diaphragm (31) of the monolithically integrated pressure sensors (26) is smooth to minimize the flow disturbance thereby measuring accurate local pressures. With the measurement of the pressures at various locations of the channel the true viscosity of test sample can be calculated. The viscometer may consist of multiple flow channels and thus the true viscosity at multiple shear rates can be measured simultaneously for a given flow rate thereby obtaining a full viscosity curve as a function of shear rate of non-Newtonian liquids in a much faster manner.

Inventors:
Bake, seong-gi
Application Number:
JP2007502978A
Publication Date:
October 11, 2007
Filing Date:
March 11, 2005
Export Citation:
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Assignee:
Rheosense, Inc.
International Classes:
G01N11/08; G01L13/02
Domestic Patent References:
JPH07502122A1995-03-02
JPH11194084A1999-07-21
JPS5745430A1982-03-15
Foreign References:
WO2003038388A12003-05-08
US5983727A1999-11-16
Attorney, Agent or Firm:
Yu Saito
Fumihiko Ito