Alarm Annunciator Unit - RTK SIL725 Safety Annunciator
The RTK SIL725 was evaluated by performing a number of different tests and checking that the results of these tests were in accordance with the manufacturer's specification of the Alarm Annunciator Unit (AAU). The AAU is constructed of independent modules for alarm inputs, push button and configuration, and safety relay output. With a total number of 30 alarms, the AAU consists of 15 alarm modules providing two separate alarms each. The tests carried out covered the initial set up; 24 hour running; power blackouts; power brownouts; RFI; fast transient alarms; effects of random accept, reset and lamp tests; implementation of O&M specified routine maintenance; statistical testing; effects of stuck pushbuttons and accidental mis-configuration.
5.1 - Flammable atmosph, detectors and alarms
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