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Interface apparatus for two-wire communication in process control loops 원문보기

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • G05B-011/32
출원번호 US-0204636 (1994-03-02)
발명자 / 주소
  • Seberger Stephen G. (Marshalltown IA)
출원인 / 주소
  • Fisher Controls International, Inc. (Clayton MO 02)
인용정보 피인용 횟수 : 115  인용 특허 : 0

초록 ▼

A process control system includes a process controller that develops a controller output signal having at least a desired DC component and an undesired AC component and a device having an adjustable parameter. An interface apparatus is coupled to the process controller and to the device via a two-wi

대표청구항 ▼

A process control system, comprising: a process controller that develops a controller output signal having at least a desired DC component; a device having an adjustable parameter adjustable by suitable communication signals from a remote location, said device controllable by the desired DC componen

이 특허를 인용한 특허 (115)

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