PUMPING SYSTEM

摘要

To meter liquid pumped from a well through a long tube, changes in the strain in a portion of the tube carrying the liquid are measured and used to determine when the liquid has reached the portion. Pumping cycles are counted to determine the amount of liquid that flows past the portion. The determination is based on an increase in the amplitude of the pulses indicating liquid is approaching the pump. Gaps in the pulses may be sensed and accounted for in the measurements.