Metrology calibration institutions bear the important responsibility of ensuring the accuracy of various measuring instruments, and dry-block calibrators are one of their commonly used calibration equipment. When calibrating a large number of temperature measuring instruments, the high efficiency and accuracy of dry-block calibrators are particularly prominent. It can quickly calibrate temperature instruments of different types and accuracy grades according to relevant metrology standards. Metrology calibration institutions usually need to handle different specifications of temperature sensors and thermometers sent by many customers. The multi-channel function of dry-block calibrators can calibrate multiple instruments simultaneously, which greatly improves the efficiency of calibration work. At the same time, the high-precision temperature control and measurement capabilities of dry-block calibrators can meet the strict requirements of metrology calibration for accuracy, provide reliable temperature measurement value traceability services for society, and ensure the credibility of temperature measurement data in various industries.