Patent ID: 8379364
Filing Date: 2013-02-19
Classification: G01R

Abstract:
1. A construction system for a capacitive sensor which extends along a longitudinal axis defining a proximal portion and a distal portion relative to a bar to which it is connected, said capacitive sensor comprising: a source electrode arranged in the vicinity of a proximal portion thereof; an internally hollow screening element which extends along its longitudinal axis, said screening element having a partition intended to configure a first proximal screened chamber and a second distal screened chamber; an electric field sensor arranged inside said first screened chamber and spaced from the distal end of said source electrode; a conditioning circuit arranged inside said second screened chamber; an electric conductor arranged inside said screening element and intended to connect said electric field sensor to said conditioning circuit; characterized in that it comprises a spacing member provided with a through-duct extending along its axis and a fixing screw; in that said partition is provided with a hole extending axially along its axis; in that said spacing member is positioned inside the first chamber with the axis of the through-duct arranged coaxial with the axis of said hole; in that said spacer is positioned between the proximal face of the partition and the distal face of the field sensor; in that said field sensor is provided with a threaded hole on its distal face; in that the head of said screw is arranged inside the second chamber and its shank is arranged so as to pass axially through said hole formed in the partition and across said through-duct of said spacing member; and in that said threaded free end portion of said screw mates with the threaded hole of said field sensor.