Has anyone verified the offset of the PID controlled B III and B IV? I have a Brewtus III. I don't have a scace or any accurate measuring device, so I am trying to check the temperature accuracy with the flash boil method. In a nutshell, I set the PID to a temp, then run the pump to see if it flash boils when it comes out of the group. I start low and work my way up to 212F. Theoretically it should not flash boil at 210F or 211F, but it should at 212F. This is a method I picked up from reading HB/CoffeeGeek.
My problem is I am not very good at identifying the point where it is or isn't flash boiling, but I have been playing around with it a lot tonight and I think it starts to flash boil around an indicated temp of 208F. If that's the case then the offset is about 4 degrees too high. The current offset is 18 degrees, which I have not changed since I got it. Searching through the archives here I see that the correct offset for the B II was 7C, or 12.6F. I think the internals are about the same between the II and III, other than the PID itself, so I don't see why the offsets would be different. Thus, between that and my experiments I believe the offset needs to be lowered. Thoughts? Anyone have a scace? Thanks -Max -- You received this message because you are subscribed to the Google Groups "Brewtus" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/brewtus?hl=en.
