EP 0571382 B1 19981028 - OPTICAL PROCESS VARIABLE TRANSMITTER
Title (en)
OPTICAL PROCESS VARIABLE TRANSMITTER
Title (de)
OPTISCHER SENDER FÜR PROZESSVARIABLEN
Title (fr)
EMETTEUR OPTIQUE A VARIABLE DE PROCESSUS
Publication
Application
Priority
US 9100904 W 19910212
Abstract (en)
[origin: WO9214227A1] A light input (26) energizes an optical transmitter (10) providing a light output to a waveguide (16) indicating a process variable. The transmitter (10) has a process variable sensor (21) generating a sensor output. An electrical circuit receives the sensor output and generates an electrical transmitter output indicating the process variable adjusted by a changeable parameter stored in the electrical circuit. The electrical circuit has an input (42, 44) energizing the circuit. An LED (58) converts the electrical transmitter output to the light output. A gallium arsenide photodiode (42, 44) converts a first portion of received light into electrical energy provided to the energization input (42, 44) and converts a second portion of the received light into an electrical output controlling the stored parameter.
IPC 1-7
IPC 8 full level
G08C 23/04 (2006.01); G08C 23/06 (2006.01); H04B 10/00 (2013.01); H04B 10/07 (2013.01); H04B 10/24 (2006.01)
CPC (source: EP)
G08C 23/06 (2013.01)
Citation (examination)
AL.: 'OPTICALLY INTERFACED SENSOR SYSTEM FOR AEROSPACE APPLICATIONS ' see the whole document
Designated contracting state (EPC)
DE GB NL
DOCDB simple family (publication)
WO 9214227 A1 19920820; DE 69130424 D1 19981203; DE 69130424 T2 19990610; EP 0571382 A1 19931201; EP 0571382 B1 19981028; JP 3130314 B2 20010131; JP H06504859 A 19940602
DOCDB simple family (application)
US 9100904 W 19910212; DE 69130424 T 19910212; EP 91906460 A 19910212; JP 50638891 A 19910212