Controller Mode selection
Flow Control loop
Proportional - Always used Integrally - Usually used Derivative - Never used
Level Control Loop
Proportional - Always used Integrally - Usually used Derivative - Rarely used
Temperature Control Loop
Proportional - Always used Integrally - Usually used Derivative - Usually used
Analytical
Proportional - Always used Integrally - Usually used Derivative - Sometimes used
Pressure Control Loop
Proportional - Always used Integrally - Usually used Derivative - Sometimes used