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.:
Date of Patent:
Oct. 25, 2016
Filed:
Mar. 10, 2015
Azbil Corporation, Tokyo, JP;
AZBIL CORPORATION, Tokyo, JP;
Abstract
In a positioner, a control calculating portion and a valve opening detecting portion are contained within a first case, and an electropneumatic converting portion and a pneumatic circuit portion are contained within a second case. The first case, which contains the control calculating portion and the valve opening detector, is assembled together with the valve, and the second case, which contains the electropneumatic converting portion and the pneumatic circuit portion, is located in a position away from the valve. A control signal MV, which is a PWM signal (a digital signal), is sent through a cable from the control calculating portion to the electropneumatic converting portion.