Sign in

Email

Password

No account? Create one. The pre-flight check works without one.

Diagnose

Control valve hunting
PID loop oscillating
Control valve hunts in AUTO but runs smoothly in MANUAL
Valve position oscillates but the process variable barely moves
Sluggish control loop
Valve stiction symptoms
All symptoms

Free tools

Reset units converter
Proportional band and gain converter
PID algorithm form converter
Valve characteristic selector
Bump test procedure
Loop type tuning cheat sheet

Systems

DeltaV PID parameters explained
Ovation PID parameters explained
SIMATIC PCS 7 PID parameters explained
Rockwell PIDE PID parameters explained
Yokogawa Centum PID parameters explained
Honeywell Experion PID parameters explained

PIDSnap gives observation-gated tuning guidance. Every value it puts in front of you is computed from the values you confirmed off your own faceplate — it has no process model and never invents a number. It does not ask you to drive a loop into sustained oscillation.

Informational only. Everything PIDSnap produces is informational. It has no connection to your control system and no knowledge of your plant beyond what you show it. You remain responsible for every change you make, for the safety of the process, and for working within your own management-of-change and permit systems. PIDSnap accepts no liability for any incident, trip, shutdown, loss of production or damage arising from its use.