Primarily intended for the comparison of long-stem Standard Platinum Resistance Thermometers (SPRT), the Model K12 furnace provides the best uniformity, stability and the largest operating range available. Designed for the United States Air Force primary metrology laboratory, this furnace is currently being used to calibrate USAF standards for labs throughout the world. The system provides an extremely safe, stable and uniform environment for comparison of up to seven long-stem thermometers.
With new 32-bit ratiometric signal conditioning, the furnace performance rivals the accuracy and precision of fixed point cells across the full range from 90 to 665 °C at a fraction of the cost. In addition, the ability to compare thermometers at temperatures between the fixed points provides an additional check on your calibrations. The broad operating range-slightly beyond the Aluminum point-allows users to anneal thermometers at the recommended 5 °C above the highest calibration point. With this system, users can complete setpoint transitions in less than 90 minutes, with virtually no temperature overshoot, even in large changes.