The
ViscoScope VA-300L sensor is designed for
the measurement of low viscosities. The range which can be covered by the Model
VA-300L is:
Range: 0.10 to
2,500.00 mPa.s x gr/cm3
Typically the
VA-300L sensor is calibrated for a three decade range but is capable to cover
more than 4 decades of viscosity measurement.
The ViscoScope
VA-300L 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. Utilizing an extremely small amplitude of torsional resonance
motion and the welded, sealed construction, the internals of the sensor are not
exposed to any wear and tear.
The ViscoScope VA-300L sensor can be mounted in any
direction 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-300L provides low cost of ownership.
The sensor is
available for three different temperature ranges:
VA-300L-LT:
Maximum Process temperature 130°C / 270°F
VA-300L-MT: Maximum Process
temperature 300°C / 570°F
VA-300L-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-300L
sensor is compatible with the ViscoScope electronics VS-4450 and
VS-B450.
Documentation
Overview ViscoScope 300 series