ISA 18.1-1979 (R2004)
- Annunciator Sequences & Specifications
- standard by The International Society of Automation, 04/01/1979
- Category: ISA
$104.00
$52.00
Formerly S18.1-1979 (R1992). Covers electrical annunciators that call attention to abnormal process conditions by the use of individual illuminated visual displays and audible devices. Sequence designations provided can be used to describe basic annunciator sequences and also many sequence variations.
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