High-precision micro-current measurement sensor

The utility model discloses a high-precision micro-current measurement sensor, relates to the technical field of sensors, and aims to solve the problems that the timeliness of temperature conduction is influenced and the detection precision needs to be improved due to the fact that a gap exists between a thermosensitive assembly and an external pipe fitting in a conventional temperature sensor. The tube socket is composed of a detection tube and an end socket, a connecting block is in threaded connection with the middle axis position of the end socket, a thermistor is fixedly installed at the middle axis position of the connecting block and inserted in the detection tube, and the thermistor is sleeved with a plurality of elastic copper sheets. The outer surfaces of the two symmetrical sides of the elastic copper sheet are attached to the inner wall of the detection tube and the outer surface of the thermistor respectively. The effects that the external temperature can be conducted to the thermosensitive assem