公开(公告)号：WO1997005588A1

公开(公告)日：1997-02-13

申请号：PCT/US1996012108

申请日：1996-07-23

Applicant: ROSEMOUNT INC.

Inventor： ROSEMOUNT INC. ,  SCHLESINGER, Morton, L. ,  KYRO, Bruce, E.

IPC: G08C19/02

CPC classification number: G08C19/02

Abstract: A transmitter (12) in a process control system (10) includes isolation circuitry (58) which isolates transmitter electronics (26) from a sensor bridge circuit (32). The isolation circuitry (58) includes high impedance isolators (114, 116) in series with high impedance buffers (106, 108) to electronically isolate the transmitter electronics (26) from the bridge (32). A power supply is isolated using a series of capacitors (174a-c; 178a-c) connected to a periodic signal.

Abstract translation: 过程控制系统（10）中的发射机（12）包括隔离电路（58），其将发射机电子设备（26）与传感器桥接电路（32）隔离。 隔离电路（58）包括与高阻抗缓冲器（106,108）串联的高阻抗隔离器（114,116），以将发射机电子器件（26）与桥接器（32）电隔离。 使用连接到周期信号的一系列电容器（174a-c; 178a-c）来隔离电源。

公开(公告)号：EP0842505A1

公开(公告)日：1998-05-20

申请号：EP96925420.0

申请日：1996-07-23

Applicant: ROSEMOUNT INC.

Inventor： SCHLESINGER, Morton, L. ,  KYRO, Bruce, E.

IPC: G08C19

CPC classification number: G08C19/02

Abstract: A transmitter (12) in a process control system (10) includes isolation circuitry (58) which isolates transmitter electronics (26) from a sensor bridge circuit (32). The isolation circuitry (58) includes high impedance isolators (114, 116) in series with high impedance buffers (106, 108) to electronically isolate the transmitter electronics (26) from the bridge (32). A power supply is isolated using a series of capacitors (174a-c; 178a-c) connected to a periodic signal.

公开(公告)号：EP0842505B1

公开(公告)日：2003-03-12

申请号：EP96925420.0

申请日：1996-07-23

Applicant: ROSEMOUNT INC.

Inventor： SCHLESINGER, Morton, L. ,  KYRO, Bruce, E.

IPC: G08C19/02

CPC classification number: G08C19/02