EXPLOSION-PROOF PRESSURE SENSOR AND EXPLOSION-PROOF TRANSMITTER

• Main Author: TERADA HISAO
• Format: Patent
• Language: English
• Published: 16.02.2006
• Subjects: MEASURING; MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER,MECHANICAL EFFICIENCY, OR FLUID PRESSURE; PHYSICS; TESTING

PROBLEM TO BE SOLVED: To provide both an explosion-proof pressure sensor and an explosion-proof transmitter capable of achieving the function of explosion-proof stably, even if maintenance is omitted. SOLUTION: The explosion-proof transmitter G is equipped with an explosion-proof case 2 penetrated by an axial hole 1 from exterior to interior, an operative shaft 5 extending the one end 3 to exterior of the explosion-proof case 2 and plunging the other end 4 into the interior of the explosion-proof case 2 through the axial hole 1, a bush 6 prescribing a spacing between the axial hole 1 and the operative shaft 5 prepared on the axial hole 1, a linear motion bearing 7 for supporting the operative shaft 5 at will toward exterior or interior to the explosion-proof case 2, and a load cell 8, a strain-generating element 24, of which is contained in the explosion-proof case 2 to connect with the other end 4 of the operative shaft 5. The explosion proof pressure sensor P adds a configuration of pressure sensitive element 9, connecting to the one end 3 of operative shaft 5, rising or falling of the moving force of the operative shaft 5, in proportion to the pressure to the explosion proof transmitter G. COPYRIGHT: (C)2006,JPO&NCIPI