The system is designed so that the average outflow is 90 lpm and the operating range of the normally-closed (NC, air to open) linear valve is 0 - 207 lpm. The controller has a 4-20 mA output. Determine the equilibrium state for the valve? me = mA

The system is designed so that the average outflow is 90 lpm and the operating range of the normally-closed (NC, air to open) linear valve is 0 - 207 lpm. The controller has a 4-20 mA output. Determine the equilibrium state for the valve? me = mA

Refrigeration and Air Conditioning Technology (MindTap Course List)

8th Edition

ISBN:9781305578296

Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Publisher:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Chapter16: Advanced Automatic Controls-direct Digital Controls (ddcs) And Pneumatics

Section: Chapter Questions

Problem 3RQ: One advantage of a modern control system is A. simplicity. B. faster response. C. ability to...

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Question

The system is designed so that the average outflow is 90 lpm and the operating range of the
normally-closed (NC, air to open) linear valve is 0 - 207 lpm. The controller has a 4-20 mA output.
Determine the equilibrium state for the valve?
me =
mA

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Step 1: Write the given data.

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Step 2: Write the expression of linear valve for slope of the graph between outflow and output.

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