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Question:

How does the positioner output change when the feedback lever of the positioner and valve stem falls off?

How does the positioner output change when the feedback lever of the positioner and valve stem falls off?

Answer:

The positioner and the control valve are connected with the feedback rod to fall off, and the positioner has no feedback and becomes a pneumatic amplifier with high magnification.
Jul 19, 2017
If the positioner is positive, that is, the signal increases, the output also increases, then the stem fell off, the output run the maximum, and if it is counterproductive, then run zero.
Jul 19, 2017
The positioner and the control valve are connected with the feedback rod to fall off, and the positioner has no feedback and becomes a pneumatic amplifier with high magnification. If the positioner is positive, that is, the signal increases, the output also increases, then the stem fell off, the output run the maximum, and if it is counterproductive, then run zero.
Jul 19, 2017

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