| 摘要 |
PROBLEM TO BE SOLVED: To provide a rotary joint for measurement information transmission for a temperature sensing resistor, which can precisely measure the temperature over a long time and in which the possibility of a leakage accident and an explosion does not exist, even when the temperature of a rotor such as a cooling roll is measured through fitting the temperature sensing resistor to the rotor. SOLUTION: This temperature sensing resistor 11 of platinum and the like, which is embedded in the surface layer part of the cooling roll is connected to a resistance temperature converter 8 in a housing through a connector part 12. An A/F converter for converting current into a pulse signal, the resistance temperature converter 8, and a transmitter 10 are connected. The power converter 8 supplies power to the respective units, and the respective units are connected. An antenna member 13 fitted to a side of transmission supporting unit and an antenna member 17 fitted to a side of first housing member 5 transmit the measurement information without making a contact. A power transmission coupler 18 fitted to the side of the transmission supporting unit and a power transmission coupler 19 fitted to the side of the first housing member 5 supply power without making contact. |
