Automatic temperature calibration apparatus

The invention relates to test or calibration of temperature measuring equipment applying a resistance element, in particular to an automatic temperature calibration apparatus comprising an electronic temperature meter (1), a temperature sensor (2), an A/D converter (3), an address latch (4), a singlechip (5) and a personal computer (PC) (6). The automatic temperature calibration apparatus has a structure that the electronic temperature meter (1) and a temperature probe of the temperature sensor (2) are immerged in a medium, and a liquid crystal display driving circuit of the electronic temperature meter (1) is directly connected to the singlechip (5); the temperature sensor (2), the A/D converter (3), the address latch (4) and the singlechip (5) are connected in sequence; the singlechip (5) is connected with the PC (6) in a full duplex serial communication way. The automatic temperature calibration apparatus has the advantage of simple operation, high efficiency, accurate data, convenient storage and further