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Micro slit viscometer with monolithically integrated pressure sensors

  • US 20050183496A1
  • Filed: 03/11/2005
  • Published: 08/25/2005
  • Est. Priority Date: 10/31/2001
  • Status: Active Grant
First Claim
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1. A slit rheometer for determining the viscosities of liquids comprising:

  • a channel substrate with at least one flow channel contained by three side walls, at least one flow entrance, and at least one flow exit;

    a monolithic sensor plate having at lease two independent pressure sensors at two different locations sufficiently away from the entrance and exit along the longitudinal direction in each flow channel of the at least one flow channel so that a pressure drop of fully developed flow can be measured;

    the channel substrate and the sensor plate being combined so that the sensor plate surface becomes a side wall that enables full containment along with the three side walls of the channel substrate of the liquids during flow along the channel except at areas of liquid entrance and exit.

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