The LabVIEW DAQ cards receive a signal in from an Endress + Hauser flow meter, processes it through a PID loop in the LabVIEW software, and send the signal out to a QPV electronic pressure regulator which pilots the Equilibar flow control valve. This video demonstrates how to set up LabVIEW software and LabVIEW DAQ cards for closed loop flow control using an Equilibar valve. The end-user must develop the LabVIEW instrument file.ĭetails for setting up LabVIEW with Equilibar Flow Control Valve A simple demonstration of moving the pivot point in a feedback system is achieved by balancing an upturned broomstick on the end of ones finger. On-site personnel can tune the PID settings in the program to optimize the valve’s performance for each application. Use the LabVIEW program on the laptop to send signals between I/O control boards, the flow meter and the Equilibar electronic pressure regulator. On this page you will find specific information about using LabVIEW as a PID controller for a flow control loop with an Equilibar FCV.īelow is a schematic showing how the system is generally set up. Water Hammer and Chatter with Equilibar Back Pressure RegulatorsĮquilibar valves function as back pressure regulators by design and can be set up and used in flow control applications using a flow meter and control logic as explained on our flow control page.įor a review of the various types of control systems you can use to set up an Equilibar FCV for flow control, please visit our “ getting started with flow control ” page.

Diaphragm Selection for Equilibar Regulators.Considerations for Oxygen Rich Applications.

Labview basic pid controller