HNL INSTRUMENTS &
CONTROLS
Series 500
Pneularm
Pneularm annunciators are
totally pneumatic in operation and contain no electrical items.
Series 500 is fail-safe in operation and provides both visual and
audible signals in the event of an alarm.
Removal of an alarm point holding signal produces an alarm condition;
the pneumatic audible alarm operates and the appropriate visual
signal indicator flashes from black to red continuously until the
alarm is accepted.
On ACCEPTANCE, the audible alarm is cancelled and the visual
indicator shows continuous red. TEST causes all indicators to flash
and the audible alarm to sound.
Photograph shows
512-04-C00 - an enclosed Front Panel Mounted Control Module with Test
and Accept facilities (and Auto Reset).
See Series 842 for details of air horn.
500 Series
Coding 500 Series
Options BACK
HAMALL PROCESS INSTRUMENTS,
DEVONPARK MILLS, ALEXANDRA STREET, TILLICOULTRY, CLACKMANNANSHIRE,
SCOTLAND, UK. FK13 6HP
TEL NO : 44 (0)1259 753753 FAX NO : 44
(0)1259 752770
 sales@hamall.co.uk
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