| 摘要 |
A method for diagnostically dynamic testing and determining the dynamic operating condition of a pneumatically operated fluid control valve assembly wherein a dynamic output of the valve assembly is compared in response to a dynamic input to the valve assembly. A controlled variable pneumatic pressure is supplied to the input of the valve positioner forming the dynamic input to move the flow control member. The controlled varying pressure is sensed to provide a first signal representing the dynamic input. The movement of the flow control member is sensed to obtain a second signal representing the responsive dynamic output, and the first and second signal are processed to develop valve diagnostic data, which is displayed to enable determination of the dynamic performance of the valve assembly under test.
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