Cla-Val 350-07/3650-07 - Manual (Page 23)

In some instances it may not be physically possible to reach desired system High pressure point due to possibility of putting
too much pressure in a zone. Projection calibration mode is an ideal solution for this situation.
1) Look at pressure gauge or flow sensor, use Increase actuator or Decrease actuator until HIGH pressure point is reached.
Press the Stop actuator button. Use good quality gauges and be as precise as possible. If calibrating CDHS-32 for flow
rate using an orifice plate, a calibrated differential pressure gauge or transmitter is recommended. Once low pressure or
flow is reached, click on Low point setting button.
2) Look at pressure gauge or flow sensor and use Increase actuator or Decrease actuator buttons to increase pressure or
flow as close as is practical to desired HIGH pressure point.
3) Enter this value in projected High point calibration window.
4) Next, click on the High point setting button, and then click on the Download calibration button. The actuator automatically
projects range to desired high point value entered in Configuration tab window.
5) New projected High point, Low point, Loss-of-Signal, and Rotation speed settings are sent to actuator. Actuator LED will
change to green when complete. Unplug cable from actuator and replace protection cap, actuator is now ready to accept
4 - 20 mA command signal from permanent cable Yellow and Black wires.
Calibration - Projection to New HIGH Value Point
Fig. 3
Page 5
Projected High Calibration