The ViscoScope
sensor VA-300M is designed for the measurement of medium viscosities. The range
which can be covered by the Model VA300M is:
Range: 1.0 to
25,000.0 mPa.s x gr/cm3
Typically the
VA-300M sensor is calibrated for a three decade range but is capable to cover
more than 4 decades of viscosity measurement.
The ViscoScope
VA-300M sensor generates a very small torsional oscillation resonance of
constant amplitude on the probe surface. By adjusting the amplitude, the sensor
can even be configured for difficult applications. A closed PID loop controls
the amplitude of system. Viscosity is being measured by extracting the viscosity
signal from the PID control loop. Using well established as well as new PID
control technology enables a large measurement range, long term stability
and fast response.
The entirely welded construction seals the sensor from
the process. By utilizing an extremely small amplitude of torsional resonance
motion and a sealed construction the internals of the sensor are not exposed to
any wear and tear.
The ViscoScope VA-300M sensor can be mounted in any
position into a tank, reactor or pipe. The measurement can be made, where it is
most important for the application. Current process parameters are made
available for measurement and control purposes. Turbulent flow in a tank,
reactor or pipe does not have an influence on the measurement.
Maintenance free
operation of the ViscoScope sensor VA-300M provides low cost of
ownership.
The sensor is
available for three different temperature ranges:
VA-300M-LT:
Maximum Process temperature 130°C / 270°F
VA-300M-MT: Maximum Process
temperature 300°C / 570°F
VA-300M-HT: Maximum Process temperature 450°C /
840°F
Dependent on the
temperature classification, the temperature is measured with one or two Pt100
temperature sensors. The process temperature measurement is being done directly
in the viscosity probe and at the same location at which the viscosity is being
measured. A second Pt100 monitors the coil temperature.
Use of the sensor
in a hazardous, classified area is accomplished via safety barriers. The sensor
can be provided with different agency approvals.
The ViscoScope
VA-300M sensor is compatible with the ViscoScope electronics VS-4450 and
VS-B450.
Documentation
Overview ViscoScope 300 series