| 摘要 |
PROBLEM TO BE SOLVED: To provide a calibrator for three-wire type temperature measurement with its calibration error reduced and its maintenance cost lowered. SOLUTION: This calibrator for three-wire type temperature measurement is equipped with a first terminal connected to one end of a reference resistor with a reference current flowing therethrough, a second terminal connected to the reference resistor, and a third resistor connected to the other end of the reference resistor with the reference current flowing therethrough, and is used for calibrating a three-wire type temperature measurement circuit. This calibrator is characterized by being equipped with a switch for causing a contact point connected to one end of the reference resistor and a contact point connected to the other end of the reference resistor to be changedly connected to the second terminal. COPYRIGHT: (C)2007,JPO&INPIT
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