Señales lógicas de medida y control en los procesos industriales.
BINARY DIRECT VOLTAGE SIGNALS FOR PROCESS MEASUREMENT AND CONTROL SYSTEMS.
SIGNAUX LOGIQUES DE MESURE ET DE COMMANDE DANS LES PROCESSUS INDUSTRIELS
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25.040.40 / Industrial process measurement and control
CTN 203/SC 65 - Industrial-process measurement and control. Fieldbus
HD 557 S1:1990 (Identical)
IEC 60946:1988 (Identical)
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