Cla-Val VC-22D - Manual (Page 2)

VALVE FUNCTIONS
PID
PID Control
Used in maintaining a control valve at setpoint.
Uses a graphical function, allowing the user
to make different signal types (for example:
flow and pressure). The user also has the ability
to make relationships as a function of time.
This is the primary function employed in pressure
management/water savings applications.
Control Curves
Retrans
Used to take “action” (or alarms) on an input,
output, or variable when a programmable
condition is met.
Actions
Keeps track of total volume as a function of time.
Customizable units & reset functionality allow for
simplified set-up and configuration.
Totalizer
Used to retransmit any input signal, variable,
or calculation to a SCADA system.
Retransmission outputs include analog 4-20mA
or digital (contact closure).
Retransmission
Used to return an accurate flow rate without
having a flow meter installed. Using a valve
position transmitter & DP transmitter, this
function will calculate flow.
DP Metering