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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 9563208 B1

PDFFull Text
Date of Patent:
Feb. 07, 2017

Filed:

Mar. 09, 2015

Positioner

Applicant:

Azbil Corporation, Tokyo, JP;

Inventors:

Kouichirou Murata, Tokyo, JP;

Yousuke Inagaki, Tokyo, JP;

Assignee:

AZBIL CORPORATION, Tokyo, JP;

Attorney:

Troutman Sanders LLP

Primary Examiner:

Michael R Reid

Assistant Examiner:

Paul J Gray

Int. Cl.
CPC ...
F16K 37/00 (2006.01); G05D 7/06 (2006.01); F16K 31/12 (2006.01); G05B 11/01 (2006.01); G05B 15/02 (2006.01); F15B 5/00 (2006.01); F15B 20/00 (2006.01); F15B 21/04 (2006.01);
U.S. Cl.
CPC ...
G05D 7/0676 (2013.01); F15B 5/006 (2013.01); F16K 31/12 (2013.01); F16K 37/0025 (2013.01); G05B 11/01 (2013.01); G05B 15/02 (2013.01); F15B 20/00 (2013.01); F15B 21/045 (2013.01); F15B 2211/6306 (2013.01); F15B 2211/6313 (2013.01); F15B 2211/6336 (2013.01);
Abstract

A positioner is provided with a control calculating portionincluding first and second calculating portions. The first calculating portion, a valve opening detecting portion, and a first pressure sensor are contained in a first case. The second calculating portion, an electropneumatic converting portion, a pneumatic circuit portion, and a second pressure sensor are contained in a second case. The first case is assembled together with the valve, and the second case is located in a position away from the valve. Output signals from the first calculating portion, which are a control signal MV (a PWM signal) and a detected pressure signal S(wherein a detected pressure signal Shas been converted into a digital signal, are sent to the second calculating portion through cables

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