about MODICON TSX 3722

So far, many people have visited this thread but no body has put any suggestion so far... may be because it was not very much specific.... therefore, i am mentioning here the complete objective along with the description of the available hardware with me.

my objective is to control the temperature of a zone that is heated through the steam. the steam flow is to be controlled by a pneumatically operated control valve, and this air is to be supplied by a solenoid operated Directional control valve( i/p- 3-4 kg/cm2 & o/p- 3-15 psi calibrated with the current (4-20mA) that comes from the PLC).

About the PLC-

I am having a MODICON TSX micro 3722 and the analog module detail i am having is as follows:-

i have got a TSX AEZ 414 input card for analog input only (PT100 is already connected to it) and i want to install a new TSX ASZ 200 output card along with it for a 4-20 mA output to control that Solenoid valve( 3-15 psi).

for the ASZ 200 o/p card,the application must give the standardised values i.e- 0 to +10000 for 4 to 20 mA range ( 0= 4mA and 10000= 20 mA)

Can somebody help me with ladder logic based on PID control to control the temperature? i need the temperature to be stable at 140 c with accuracy of 0.5%.

I feel this information would be good enough... if you need some more information, then please feel free to ask...

may i know which is the right range for the pt100 sensor? thermocouple or thermoprobe??