With an operating temperature range of 30°C to 420°C, fast heating and cooling times, and the ability to calibrate up to 48 thermocouples at one time, the HTR-420 is an asset for any laboratory. The dry block is designed to accommodate not only thermocouples, but IRTDs, ValProbes, and RF ValProbes as well. It is also compatible with the Validator 2000, Validator AVS, ValProbe, and RF ValProbe software for automatic and manual calibrations.