Measurement and Testing
ViscoScope – The Easy Way to Measure Viscocity
Jan 14 2011
The ViscoScope process viscometers from Marimex (Canada) are widely used throughout the world to measure viscosities of liquids continuously in-line. The measurement system consists of a sensor, transmitter and transmission cable. For classified hazardous areas, safety barriers are added.
The sensor has no moving parts and is maintenance free. The viscosity is measured using a constant amplitude torsional oscillation principle. The sensor vibrates at a constant resonant frequency and shear. The power required to maintain the amplitude is a measure for the viscosity.
ViscoScope sensors are built for rough process environments. The sensors are orientation independent. They are rugged and can be applied to a wide variety of processes, such as pipelining, polymers, pharmaceutical, refining, pulp and paper etc. Viscosity from 0.5 cp to 5,000,000 cP can be measured. High pressure and high temperature sensors are available.
Two basic sensor models are available; VA-300 series provides the widest range of capabilities. VA-100 is a smaller simpler sensor, best suited for constant viscosity monitoring in OEM applications.
ViscoScope transmitters control the resonant frequency and constant amplitude, determined by the mechanical construction of the sensor. The received analog signal is then converted to viscosity. Two transmitter types are available; VS-4450 is a panel mount style transmitter and the VS-D250 is a DIN-Rail mount style transmitter. A Serial interface running Modbus protocol is provided and analog outputs are available.
Come and see the next generation in March at Pittcon 2011.
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