If I may:
The fourth section of the code (-2-) indicates that both controllers have 4-20ma input, hence they can't directly use RTD or Thermocouple.
So to answer question 1: I think it will be better to get standard PID controllers.
As far as question 2, I learnt a lot by browsing the...
Try this one:
http://www.ebay.com/itm/COMBINED-FREE-SHIPPING-20X16X8-ENCLOSURE-500x400x200-REPLACEMENT-16X16X8-/130631415975?pt=BI_Electrical_Equipment_Tools&hash=item1e6a3d38a7#ht_9417wt_905
Another one to consider:
http://mashmaster.com.au/p/4571858/mashmaster-minimill-stainless-steel-grain-mill.html
Hopefully it doesn't add more confusion to you... :D