Controller output % = current output - minimum output
---------------------------------------------- X 100
maximum output - minimum output
2)MEASURE VALUE AS PERCENTAGE
Measure value in % = MV - minimum MV
-------------------------------- X 100
max MV - minimum MV
3)SET POINT AS PERCENTAGE VALUE
Set point % = SP - min value
---------------------------- X 100
max value - min value
4)ERROR AS PERCENTAGE VALUE
Error point % = % SP X MV
----------------------------- X 100
max value - min value
5)PROPORTIONAL BAND
Proportional band , PB = 100
---------------------
proportional gain , KP
PB = 100
------
KP
6)CONTROLLER OUTPUT
P = Kp*Ep X P(0)
7)POSITIVE ERROR BAND
Positive error band = max permissible positive error
------------------------------- X 100
temp range
8)NEGATIVE ERROR BAND
Negative error band = max permissible negative error
------------------------------- X 100
temp range
9)PROPORTIONAL CONTROLLER
E = SP - MV
P(i) = KP*EP + P(0)
