PID Optimizer is the easy-to-use PID loop tuner that allows you to tune your single and multiple interacting PID loops quickly and efficiently.
Examples of interacting loops are all PID controllers around distillation columns, superheaters in boilers, furnaces (e.g. in refineries and ethylene), and beyond.
Tuning is done based on engineering specifications like optimal tracking or disturbance rejection with minimal overshoot or minimum robustness. These specifications are the things that matter for your process stability and efficiency.