PIDcalc is a utility to calculate Proportional, Integral and Derivative (PID) tuning values for a process control loop. Enter process data from your bump test and PIDcalc will give you P, PI, or PID values for most controller types. Select your algorithm from Ziegler-Nichols, Internal Model Control (IMC), Lambda, Allowable Level Variation for surge tanks, etc.
A handy app for the Controls/Instrumentation Engineer.