RKI Instruments Pioneer 4W - Manual (Page 14)

10 • Description Pioneer Gas Monitor Operator’s Manual
Relays
NOTE: The Pioneer also includes four common relays (to the left of the analyzer card
sockets). The common relays activate for all active channels.
Three relays are behind the external alarm terminal strip. The relays are single-pole,
double-throw (SPDT) and are rated for 8 amps at 250 VAC (resistive). The relays are from
top to bottom alarm 1, alarm 2, and alarm 3. The relays are dedicated to the channel that
the analyzer card is plugged into only. For example, the alarm 1 relay energizes only when
the channel that the card is plugged into goes into an alarm 1 condition.
NOTE: You can select normally energized or normally de-energized relays in the
Instrument Setup program. This section describes the default setting: normally
de-energized.