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1. WO1996002874 - POWER SUPPLY FOR FIELD MOUNTED TRANSMITTER

Publication Number WO/1996/002874
Publication Date 01.02.1996
International Application No. PCT/US1995/008198
International Filing Date 28.06.1995
Chapter 2 Demand Filed 01.02.1996
IPC
G05B 15/02 2006.01
GPHYSICS
05CONTROLLING; REGULATING
BCONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
15Systems controlled by a computer
02electric
CPC
G05B 15/02
GPHYSICS
05CONTROLLING; REGULATING
BCONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
15Systems controlled by a computer
02electric
Applicants
  • ROSEMOUNT INC. [US/US]; 12001 Technology Drive Eden Prairie, MN 55344, US
Inventors
  • VOEGELE, Kevin, D.; US
  • PIECHOWSKI, Todd, A.; US
Agents
  • CHAMPLIN, Judson, K. ; Westman, Champlin & Kelly Suite 1600 - International Centre 900 Second Avenue South Minneapolis, MN 55402-3319, US
Priority Data
08/274,38513.07.1994US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) POWER SUPPLY FOR FIELD MOUNTED TRANSMITTER
(FR) ALIMENTATION POUR EMETTEUR DE SITE DE FABRICATION
Abstract
(EN)
A field mounted transmitter (10) for use in a two-wire process control loop (16a/16b) includes a sensor (12), measurement circuitry (18) and a power supply (20). The sensor (12) senses a process variable of a process which is transmitted over the control loop (16a/16b) by the measurement circuitry (18). The power supply (20) is powered by a current flowing through the control loop (16a/16b) and powers the measurement circuitry (18). The power supply (20) includes an inductive element (70) coupled to the measurement circuitry (18) and a switch (64) which selectively couples the inductive element (70) to the control loop (16a/16b).
(FR)
Emetteur de site de fabrication (10) placé dans une boucle de commande (16a/16b) de processus bifilaire comportant un capteur (12), un circuit de mesure (18) et une alimentation (20). Le capteur (12) détecte une variable de processus qui est transmise au circuit de mesure (18) par l'intermédiaire de la boucle de commande (16a/16b). L'alimentation (20) qui reçoit un courant traversant la boucle (16a/16b) (10) et alimentant le circuit de mesure (18) comporte un élément inductif (70) couplé au circuit de mesure (18) et un sélecteur (64) pouvant coupler l'élément inductif (70) à la boucle de commande (16a/16b).
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