Hach sc1000 - Manual (Page 98)

96
Advanced Operations
Figure 59 Relay behavior—2 POINT Control mode (ON/OFF delay)
1 High Alarm 4 OFF delay (when phase is low)
ON delay (when phase is high)
2 Low Alarm 5 Time (x-axis)
3 ON delay (when phase is low)
OFF delay (when phase is high) 6 Source (y-axis)
Table 32 Color/line code for Figure 59
Selected Source
Relay contact (phase low)
Relay contact (phase high)