DEVELOPMENT AND APPLICATION OF ELECTROMAGNETIC INDUCTION LOAD CELL

Due to serious swift and instability remained in the electric resistance strain load cell, a new kind of electromagnetic induction load cell was developed based on electro magnetic measurement principles and the new one can be equipped with all kinds of dynamometers. This paper introduces its principal mechanism, structure design and performance test. The field results show that the new load cell has better stability, high accuracy and strong suitability for field use. It also has the features of reasonable structure and simple manufacture process- It supplies a method to accurately measure beam pumping dynamometer cards.