| 摘要 |
Apparatus for measuring the level of particulate material in a container is disclosed including level indication conduit vertically disposed in a container so that changes in the level of the particulate material in the container result in corresponding changes in the level of particulate material in the level indication conduit, further conduits for flowing a gaseous stream through the level indication conduit and a pressure gauge for measuring the pressure drop in the gaseous stream flowing through the level indication conduit so that changes in the level of the particulate material in the level indication conduit causes corresponding changes in that pressure drop. Methods for measuring the level of particulate materials in a container are also disclosed, including vertically disposing a level indication conduit in a container so that the level of the particulate material in the container is reflected in the level indication conduit, flowing a gaseous stream through the level indication conduit, and measuring the pressure drop in the gaseous stream flowing therethrough.
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