Method and apparatus for monitoring and measuring dynamic loads

Details Method and apparatus for monitoring and measuring dynamic loads Method and apparatus for monitoring and measuring dynamic loads

1989-06-08

1991-04-23

Raevis, Robert

Measuring and testing

Blower, pump, and hydraulic equipment

G01M 1900

Patent

active

050091018

ABSTRACT:
Actual valve stem thrust loads in a motor operated valve are monitored and measured directly by the use of load cells disposed directly between the valve and the operator. Direct measurement of stem thrust eliminates the errors associated with indirect methods. Analysis of actual thrust load measurements and correlation with other operating parameters, such as switch actuation and motor current, provides the capability to accurately calibrate valve operators and to detect valve and operator problems at an early stage.

REFERENCES:
patent: 4542649 (1985-09-01), Charbonneau et al.
patent: 4570903 (1986-02-01), Crass
patent: 4694390 (1987-09-01), Lee
patent: 4805451 (1989-02-01), Leon

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