milldrone
Member
Dick,
Does anything special need to be done if you were using a positive displacement pump VS a centrifugal pump as far as the pid goes? It seems that the PID in a positve displacement situation would need the variable pump near zero speed as a DOL pump came on line. But if this were a centrifugal situation the variable pump would need to be near 50% when the DOL pump came on line. Assuming the pumps are all the same size.
Does anything special need to be done if you were using a positive displacement pump VS a centrifugal pump as far as the pid goes? It seems that the PID in a positve displacement situation would need the variable pump near zero speed as a DOL pump came on line. But if this were a centrifugal situation the variable pump would need to be near 50% when the DOL pump came on line. Assuming the pumps are all the same size.