For over 80 years Brookfield AMETEK has been the world's leading manufacturer of Viscometers and Rheometers for laboratory and on-line process control applications. Laboratory Viscometers and Rheometers include Dial Reading (Analog) and Digital Display Model of which several are Programmable. On-line Process Control Viscometers include Probe, In-Tank, In-Line and flow through models.
All Brookfield viscometers employ the well-known principle of rotational viscometry; they measure viscosity by sensing the torque required to rotate a spindle at constant speed while immersed in a fluid. The torque is proportional to the viscous drag on the immersed spindle, and thus to the viscosity of the fluid.