DEVICE FOR CHECK OF LOW LEVEL OF LIQUID Russian patent published in 1994 - IPC

FIELD: water supply and plumbing systems. SUBSTANCE: device has tank possessing positive buoyancy which is located below upper level of liquid so that it might flow to tank interior. Mounted in the center of tank is vertical bush through which rod is passed; lower end of this rod is connected with float and its upper end is connected with cam of leverage acting on the limit switch. Tank is mounted on vertical guide rods locked in reservoir by means of telescopic horizontal spacers. Coarse adjustment of device is ensured by means of holders secured on vertical rods and fine adjustment is ensured through adjusting the clearance between tank bottom and float connected with rod. For adjustment of the clearance, screw stop is provided which is engageable with cam of leverage. EFFECT: quick and easy mounting, adjustment and dismantling of device in open water basins, particularly in sewage purification works, enhanced reliability. 4 cl, 5 dwg