The function and use of dry block temperature calibrator

What is the dry block temperature calibrator?Where is it generally used that? Dry block temperature calibrators heat or cool a metal block to a specific temperature to accurately calibrate temperature sensors. Dry block temperature calibrators provide an option for calibrating in the field, combining value and portability with performance and accuracy.Dry block temperature Calibrators are generally more portable than Liquid Baths and are useful when performing field testing or on-site calibrations.