| 摘要 |
A pneumatic level meter includes a measuring tube immersed to the controlled liquid medium, pressure source and measuring device, at that the upper end of the measuring tube is fixed with keeping to tightness on the body of pneumatic vessel that comprises a reamer and cylinder with piston that is connected by means of a rod to drive, under measuring tube a plate valve is installed, this is fixed at the end of the cable placed in the measuring tube and rigidly connected to the surface of the cylinder installed on axle in the reamer of pneumatic vessel and connected by means of a lever fixed on its side wall and crank mechanism to the rod of the piston, and in the gap of the cable at distancefrom the pointof the cable hang from the cylinder compensation spring is installed, where- distance of the plate valve from the measuring tube, and, where- diameter of measuring tube. |
