Closed loop proportional-integral fluid flow controller and meth

Details Closed loop proportional-integral fluid flow controller and meth Closed loop proportional-integral fluid flow controller and meth

1990-02-26

1992-11-03

Smith, Jerry

Boots, shoes, and leggings

364146, 364191, 364143, 364188, 55210, 137 2, G05B 1302, G06F 300, G06F 900

Patent

active

051611007

ABSTRACT:
A closed loop controller and method of operation are provided which allow for configuring the controller with two switches. In one mode of operation, the two switches (22) and (24) are manipulated to increase and decrease the integral time value and the proportional gain, respectively, of the controller (10). In another mode of operation, the first switch (22) is manipulated to select among a plurality of configuration parameters and the second switch (24) is manipulated to select the desired value of the selected parameter. Level shifting circuitry (14) is also provided to permit remote operation of the controller (10) using a modem.

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patent: 4602326 (1986-07-01), Kraus
patent: 4682279 (1987-07-01), Watabe
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