The SENS100-34CWB wireless load sensor (hereinafter referred to as the load sensor) is designed for the pre-standard displacement test dynamometer diagram of the oil field pumping unit well. It integrates load and wireless pre-calibration displacement measurement functions into one, applying force sensitivity, standard positioning shift, wireless digital communication, low-power single-chip and other technologies. It belongs to a new type of energy-saving digital products, has obtained multiple patents, and passed the explosion-proof certification. The industrial environment is designed for use in major oil fields such as Daqing, Shengli, North China, and Xinjiang. It has won unanimous praise from users for its high accuracy, good reliability, simple installation and easy maintenance.