ABSTRACT
This chapter describes the viscometers are covered which can be installed in a tank or pipe in an industrial environment. Continuous capillary viscometers are primarily designed to measure the viscosity of Newtonian liquids. Dual-capillary viscometers are installed because constant viscosity guarantees consistent atomization of the fuel, which in turn improves combustion efficiency. The working principle of the falling-piston viscometer is quite similar to the falling-ball viscometer. These viscometers are used industrially and in the pilot plant to measure the viscosity of process fluids and to continuously indicate, record, or control the process. The single-float viscometer is a direct reading viscosity instrument for continuous measurement. The sensor in a torsional oscillation-type viscometer can either be spherical or rod-shaped. The viscometer reads the product of absolute viscosity and density. Rotating cone viscometers are designed to operate in industrial environments on a continuous basis. The vibrating reed viscometer is designed for continuous measurement of viscosity in process streams.
