Precision Digital PD650 - Manual (Page 76)

Model PD650 Large Display Process Meter Instruction Manual
76
Simple On/Off Control with 100% Deadband Operation
The meter can be used as a simple On/Off controller as the following illustrates:
Using the meter for sump-pump control and alarm control
Relay #1 turns the main
pump on at 6000 gallons
and turns it off at 1000
gallons.
Relay #2 turns on the
backup pump at 7000
gallons and turns it off at
1000 gallons.