An industrial capillary viscometer

1,021,049. Measuring viscosity. FARBENFABRIKEN BAYER A.G. May 27, 1963 [May 26, 1962; Aug. 30, 1962], No. 21109/63. Heading G1S. An industrial capillary viscometer for fully automatic measurement of the viscosity of conductive liquids comprises a measuring vessel 4 with a capillary 5 and three electrodes 10, 11, 12. The vessel 4 is immersed in a vessel 2 through which an emulsion to be tested is flowing and suction is applied through a tube 13 until the emulsion rises to the level of the electrode 12. This operates an electrical delay switch which stops the suction and applies pressure to a piston 26, thus raising the measuring vessel above the level of the emulsion. The emulsion flows from the measuring vessel through capillary 5 and when the emulsion drops below the level of the electrode 12 a switch is operated to start a timing operation. When the level drops below the electrode 11 the timing operation is terminated and the measuring vessel is automatically lowered into the emulsion. The time may be measured by a synchronous motor with a transmitter potentiometer connected in series, Fig. 2 not shown, and the measured valve may be switched at the end of this measurement to a recorder. Alternatively the synchronous motor may operate the rolls of a rotary mechanical counter. Alternatively Fig. 3 not shown, the time may be counted stored and indicated by a frequency reducer, a three-decade impulse counter, a three-decade storage mechanism and associated gate circuit groups, amplifier and visual decades. The measuring vessel 4 may be lowered into a container 22 containing water for washing and comparison.