Stephanie J Law

US Patent:

6830061, Dec 14, 2004

Filed:

Apr 17, 2002

Appl. No.:

10/125724

Inventors:

Paul Robert Adams - Marshalltown IA
Stephanie Marie Law - Marshalltown IA

Assignee:

Fisher Controls International LLC - St. Louis MO

International Classification:

G05D 706

US Classification:

137 12, 1374875, 137486

Abstract:

An intelligent fluid flow regulation device that includes a pressure regulator within a fluid flow passage that has an associated throttling element moveable in the flow passage. A number of sensors in communication with the fluid flow passage and the throttling element are provided that communicate information from the sensors to a processor also contained within the regulation device. A communication unit is also included within the regulation device that affords communication between one or more devices that are external to the fluid flow regulation device and the processor within the regulation device.

US Patent:

6441744, Aug 27, 2002

Filed:

Jun 23, 2000

Appl. No.:

09/603157

Inventors:

Paul R. Adams - Marshalltown IA
David E. Woollums - Frisco TX
Jon B. Milliken - Marshalltown IA
Richard J. Vanderah - Marshalltown IA
Stephanie M. Law - Marshalltown IA

Assignee:

Fisher Controls International, Inc. - Clayton MO

International Classification:

G08B 2100

US Classification:

340626, 340610, 137551, 137557

Abstract:

Apparatus for performing diagnostics through a regulator is disclosed. The pressure regulator is disposed in a fluid flow passage and has a throttling element moveable in the flow passage. A stem is attached to the throttling element. The apparatus includes a first pressure sensor for measuring pressure upstream of the throttling element, a second pressure sensor for measuring pressure downstream of the throttling element, and a travel sensor for detecting the position of the throttling element. A processor is provided which includes a stored algorithm for determining flow rate based on the measured pressure and travel values, and an alarm routine for generating logic alarms based on the measured operating parameters.