What is an Alarm Annunciator?

What is an Alarm Annunciator? Alarm annunciators are devices which accept inputs from field sensors (typically hard-wired switches in the plant, arranged to operate when a process condition enters an abnormal state, such as high temperature, low pressure, loss of cooling water flow, or many others). and provide visual indication, such that each illuminated light on the annunciator can be immediately and uniquely associated with a specific process condition. Defined flashing of the alarm windows gives the operator quick ans simple indication of the state of the alarm.

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