METHOD FOR SUPPRESSION OF INTERFERENCE IN THERMOCOUPLE CIRCUITS, THERMOCOUPLE AND METHOD FOR ITS MANUFACTURE Russian patent published in 2005 - IPC

FIELD: thermoelectric circuits of instruments based on the zee-beck effect, applicable for suppression of interference at reception of signals on temperature with the aid of thermocouples.

SUBSTANCE: the free ends of homogeneous electrodes of a four-electrode thermocouple are directly or indirectly combined. The signals from the free ends of homogeneous electrodes are summed up. The figure formed by homogeneous electrodes of the first type including the electrodes proper and the space between them, even partially, are positioned in space between them, even partially, are positioned in space between the homogeneous electrodes of another type, mainly symmetrically. The circuits of the homogeneous electrodes are balanced, for example, according to their resistance. To this end, a device for balancing, for example, of their resistances is introduced in the circuit of homogeneous electrodes. At manufacture of a thermocouple the electrodes are combined in one working junction. The electrodes are positioned in four longitudinal guides, for example, holes or slots of an insulating, mainly ceramic, tube or bar.

EFFECT: reduced share of electromagnetic interference in the thermocouple signal.

6 cl, 3 dwg