Vertical Tube Furnaces never die!
A huge shout out to Dr. Roger Nielsen of South Dakota Mines for sending us these pictures of a very old Deltech vertical tube furnace control system and kind words about his “workhorse” furnace!
Quoting Dr. Nielsen,
“I sort of lost track of which old controller went where. Your info confirmed what I suspected. It is a unit I purchased when I was a grad student at SMU. I took it with me to Maryland in 82, then Oregon State in 88 and here in 18. Results have been published in over 40 papers with over 5000 citations. I think that is the definition of a “workhorse”. Oh and over 20 student theses.”