Posts Tagged control loop
In case you missed last month’s webinar with Jordan Valve on back pressure regulators, we’ve put together some of the key points.
The Control Loop:
Sensing element: measures the process variable being controlled, and send an output to the controlling instrument
Controlling instrument: calculates the error (difference in signal from sensing element and the desired setpoint) and sends corrective signal to final control element
Final control element: varies the flow to change the controlled variable to the required setpoint
Industry surveys say that nearly half of all processes aren’t accurately tuned. If you read my post on accuracy, stability, and repeatability, you’ll know that a poorly tuned process can result in bad readings, downtime, and wasted materials.
If you use a Honeywell UDC2500, UDC3200, or UDC3500 1/4 DIN universal digital controller, there’s a great built-in function called Accutune that can help make sure your control process is properly tuned.