EP 1565705 A1 20050824 - METHOD FOR DETERMINING THE STATE OF A FIELD MEASURING INSTRUMENT FOR PROCESS AUTOMATION AND PROCESS INSTRUMENTATION, AND FIELD MEASURING INSTRUMENT FOR CARRYING OUT THE METHOD
Title (en)
METHOD FOR DETERMINING THE STATE OF A FIELD MEASURING INSTRUMENT FOR PROCESS AUTOMATION AND PROCESS INSTRUMENTATION, AND FIELD MEASURING INSTRUMENT FOR CARRYING OUT THE METHOD
Title (de)
VERAHREN ZUR BESTIMMUNG DES ZUSTANDS EINES FELDMESSGERÄTES FÜR DIE PROZESSAUTOMATISIERUNG UND PROZESSMESSTECHNIK UND FELDMESSGERÄT ZUR DURCHFÜHRUNG DES VERFAHRENS
Title (fr)
PROCEDE DE DETERMINATION DE L'ETAT D'UN APPAREIL D'ARPENTAGE DESTINE A L'AUTOMATISATION DE PROCESSUS ET A LA TECHNIQUE INDUSTRIELLE, ET APPAREIL DE MESURE CORRESPONDANT
Publication
Application
Priority
- DE 10255288 A 20021126
- EP 0313230 W 20031125
Abstract (en)
[origin: WO2004048898A1] The aim of the invention is to systematically record the influence of an individual adverse influence quantity or of a combination of adverse influence quantities on the serviceable life or operability of a field measuring instrument and to be able to better estimate the serviceable life or operability of the field measuring instrument. To this end, at least one relevant influence quantity, preferably several, is/are evaluated. In addition to a measured value (24) for a process variable, other quantities (25) and (26) are recorded by corresponding sensors placed on or in the field measuring instrument and are preprocessed in analog format in appropriate operating circuits in order to then digitally record them with the same A/D converter (21) that also records the measurement signal A for the process variable. The desired input signal can be selected via a multiplexer (22) and is then further processed with the aid of a microprocessor (23). As a result, the combined effect of the different influence quantities is determined and a remaining estimated serviceable life is calculated. The microprocessor (23) can trip an alarm signal in the event critical values arise in the recorded influence quantities (25, 26).
IPC 1-7
IPC 8 full level
G01D 3/08 (2006.01)
CPC (source: EP US)
G01D 3/08 (2013.01 - EP US)
Citation (search report)
See references of WO 2004048898A1
Citation (examination)
- US 5828567 A 19981027 - ERYUREK EVREN [US], et al
- DE 10100239 A1 20020711 - METTLER TOLEDO GMBH [CH]
- DE 19983112 T1 20010712 - ROSEMOUNT INC [US]
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2004048898 A1 20040610; AU 2003292105 A1 20040618; DE 10255288 A1 20040708; EP 1565705 A1 20050824; US 2007109143 A1 20070517
DOCDB simple family (application)
EP 0313230 W 20031125; AU 2003292105 A 20031125; DE 10255288 A 20021126; EP 03767645 A 20031125; US 53645403 A 20031125