SYSTEM AND METHOD FOR DISPENSING COMPRESSED GAS

摘要

An apparatus and corresponding method for dispensing compressed gas to a receiving tank is provided which includes a compressed gas source, a valve f or controlling the flow of the compressed gas between the compressed gas source and the receiving tank, an electronic controller, a conduit between the valve and th e receiving tank, and a density sensor for sensing the density of the compressed gas inside the receiving tank. The density sensor may be a capacitive sensor, a vibrating element sensor, or a nucleonic sensor. The electronic controller stores a predetermined set point density and the density sensor measures the density of the compressed gas in the receiving tank. The electronic controller periodically compares the density of the compressed gas with the predetermined set point density and controls the flo w of compressed gas through the valve.