Five 8 mm in diameter x 430 mm long wells Controller PID, ramp and soak programmable, thermocouple sensor Over-Temp Protection Separate circuit protects furnace from exceeding rated temperature limit Weight 61 lb. RS-232 You've spent some serious money to equip your lab with some of the finest SPRTs in the world because they're the most accurate measurement instruments you can buy. Now that you've got them, part of your job is to keep them performing at their highest levels. You can do that with a Hart Model 9117 Annealing Furnace. This shock changes the resistance characteristics of the platinum and shows up as temperature measurement errors.
Oxidation impacts the purity of the element and therefore the accuracy of temperature readings.
During the annealing process, contamination must be controlled. The thermometer must be cleaned and all contaminating materials removed from its sheath. Annealing should only be done in a furnace that's designed to avoid emitting metal ions during its heating cycle. Hart solves this problem in its 9117 furnace by using a quartz-encased graphite block that is specially prepared to guard against contamination before assembly. The furnace also has a programmable controller specifically designed for the annealing process.