Unused Deltapilot S Hydrostatic Level Sensor with flanged connection, manufactured by Endress and Hauser, 2007,  Model DB50-GC31BC11GG30.  ANSI 2″ 150LBS, SS316L, EEx ia IIC T6 / ATEX II 1/2 G.  For level measurement in tanks containing liquids, pastes and sludges.