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Delphian - DC Controller
The DC controller is a smart two channel digital device which displays alarms and concentrations of the gas(s) to be sensed. Each channel can be configured independently and unlike other controllers, the two channels are completely independent of one another.
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Each channel provides three gas alarms, "LO", "HI", "HIHI" and a "FAIL" alarm for combustible and toxic gases. (For Oxygen deficiency detector heads, the gas alarms are "LO" "LOLO" and "HI".) Each channel has four relays which can be energized or de-energized on alarm. The system requires a nominal 24 VDC power supply. Different front colors are used depending upon the gas type.
When an alarm is activated:
- The display on the DC flashes between the gas concentration and the alarm words.
- The output relay changes state. The relay can be wired to operate external functions.
- For toxic gas sensors the controller will read in parts per million and for combustible gas detector heads it will read in % LEL. Oxygen sensors read in % gas.