Title:
【発明の名称】液体塗料の粘度の無接触オンライン測定
Document Type and Number:
Japanese Patent JPH04505512
Kind Code:
A
Abstract:
A method and apparatus for non-contact measurement of the viscosity of a liquid such as paint. In accordance with the method and apparatus, the surface of a liquid is perturbed with a standing wave of predetermined wavelength. This perturbation is effected by directing a burst of air against the surface of the liquid using periodically spaced air nozzles. The frequency and rate of decay of the induced surface wave is measured using typically optical means including a reflected light beam. The measured frequency and decay rate are combined with the known depth of the liquid sample in a computing circuit to provide a measurement of fluid viscosity.
Inventors:
Pierce, Brian M
Chang, David Bee
Chang, David Bee
Application Number:
JP50507191A
Publication Date:
September 24, 1992
Filing Date:
February 11, 1991
Export Citation:
Assignee:
Hughes Aircraft Company
International Classes:
G01N11/00; G01N11/16; (IPC1-7): G01N11/00; G01N11/16
Domestic Patent References:
| JPS53101478A | 1978-09-04 | |||
| JPS54147089A | 1979-11-16 | |||
| JPH0213663A | 1990-01-18 |
Attorney, Agent or Firm:
Takehiko Suzue (3 outside)