High temperature precision platinum resistance temperature sensor and manufacturing method thereof

摘要

The present invention relates to a high temperature precision platinum resistance temperature sensor which can be used up to a maximum temperature of 1500C and a method of manufacturing the same, The sensor part is welded with a 4-wire platinum wire, and the platinum wire is inserted into the hole 32 of the spacer 3 so that the sensor part is welded to the protective tube 2, Characterized in that the platinum wire for measuring the load and insulation resistance of the sensor part is mounted in the hole (31) of the spacer (3) and the protective tube (2) is sealed with a Pyrex tube (4) A temperature sensor; The sensor unit 1 is processed with a synthetic sapphire single crystal rod and the sensor unit 1 is formed with a platinum wire 11 in the form of a double coil and the sensor unit is welded to a 4-line platinum wire, And then sealing the Pyrex tube (4). The method of manufacturing a high-temperature precision platinum resistance temperature sensor according to claim 1, wherein the pyrex tube (4) is sealed in a protective tube (2) It is characterized by.