I computerized my oven with a controller manufactured by:
LOVE Controls Division, Dwyer Instruments, Inc. Michigan City,
Indiana telephone 219-879-8868
I bought their: “1600 series Microprocessor based
temperature/process control with fuzzy logic option” Whatever all
It has allowed me to program in - ramps (amount of time to reach
temperature) high temps, & soak times (amount of time at specified
I only use the above features, but it has many many more.
It cost me about $200 from a Denver dealer including a heavy duty
relay (mercury relay?) able to withstand repeated on-off cycling
necessary for the control of the oven. Using a plastic electrical
box purchased at Home Depot for the relay and microprocessor
housing, I wired it up myself. With a few pointers from the dealer
who sold it to me, it was a “piece of cake” job, came out looking
and working great.
It turned my $150 oven into a $1000+ automated unit.
Now I can set the controller, flip the oven on, walk away, and
return to find all my tanzanites a perfect blue without spending all
day watching the temp dial. I love it!
Steve Green / Rough and Ready Gems Briolettes: 4mm to 30mm
in length, precision ultrasonic drilling www.briolettes.com