Xylem 6308DT INDUSTRIAL DISSOLVED OXYGEN TRANSMITTERS - Manual (Page 17)

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d) DO Relays
There are four independent Alarm channels for DO display. The hysteresis mode
(center or edge) and hysteresis value will be used by four DO relays. The actions of
the DO relays are dependent on set point, relay action type (HIGH or LOW),
hysteresis mode (Center or Edge), hysteresis value, and the current DO display. (See
figure above.)
e) Temperature Relay
1. One relay channel is available for temperature display which has
independent set point , action (see figure 1) setting ( HIGH or LOW ),
hysteresis mode (center or edge) and hysteresis value. The action of the
Temperature relay is dependent on set point, relay action type (HIGH or
LOW), hysteresis mode (Center or Edge), hysteresis value, and the
current Temperature display. (See figure above).