ROTATIONAL VISCOMETER Russian patent published in 2011 - IPC G01N11/10 

FIELD: machine building.

SUBSTANCE: rotational viscometer consists of drive with rotary cylinder secured on its shaft and of coaxial to rotary cylinder input cylinder connected to flexible element. Also, viscometer consists of sensor of angle of rotation of the input cylinder. The flexible element is equipped with rotary and fixed disks. The input cylinder corresponds to a cartridge and is coaxially secured on the rotary disk of the flexible element. The rotary disk is connected with the fixed disk of the flexible element by means of "П"-shaped flat springs uniformly arranged around the shaft. "П"-shaped flat springs are secured radially around periphery of the disks equipped with axial orifices receiving the shaft of the drive. Additionally, the sensor of rotation angle of the input cylinder is made on base of resistive-strain gauges glued on surface of one of the "П"-shaped flat springs.

EFFECT: simplified design, reduced errors at viscosity measurement.

2 cl, 1 dwg