DEVICE FOR MEASUREMENT OF ROTARY OBJECT TEMPERATURE Russian patent published in 1998 - IPC

FIELD: measurement technology. SUBSTANCE: main 1 and auxiliary 5 dielectric discs secured to rotary object shaft carry transmitting 2.1,...2i,.. . 2n and receiving-compensating 4.1,...4i,...4n coils according to number of thermocouple sensors 7. Two sections of receiving coil 3 connected to measuring instrument 8 and two sections of compensating coil 6 connected to output of regenerator of linearly variable current are arranged on both sides of discs 1, 5 on stationary stator, respectively. Output of synchronization unit 10 is connected to control input of measuring instrument. Temperature is determined by value of code generated by measuring instrument at moment electromotive force of thermocouple sensor 7.i of i-channel becomes equal to electromotive force induced in coil 4.i. Higher measurement accuracy is obtained due to removal of reciprocal influence of fields of transmitting and compensating coils, as well as to uniform field of coil 6 having circular form. EFFECT: higher accuracy of measurement. 4 dwg