Equipment for measuring grain in a silo, comprises rigid rod which supports an outer flexible tube to enclose incompressible liquid which is also in contact with an electrical pressure sensor

摘要

Two rigid rod elements (2,3) are connected together to form an inner chamber (10) which contains an electrical pressure sensitive sensor (5). One rod element partly supports a flexible tube (4) which contains within it's envelope (11) an incompressible liquid. The liquid is exposed to outer grain pressure through the unsupported portion (40) of the tube and the liquid is also in contact with the sensor through a drilling (21)