The ViscoScope
VA-300S sensor a custom designed sensor, which is specifically constructed to
measurement requirements a particular customer may have. This sensor is
available for temperatures up to 1500°C.
Range: 0.1 to 2,500,000 mPa.s x gr/cm3
Typically the VA-300S sensor is calibrated for a three
decade range but is capable to cover more than 4 decades of viscosity
measurement.
The ViscoScope
VA-300S 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-300S sensor can be mounted in any
position into a tank, reactor or pipe. For certain applications, which require
it, it is also possible to mount the sensor in an open channel. 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-300S provides low cost of ownership.
The sensor is available for three different temperature
ranges:
VA-300S-LT:
Maximum Process temperature 130°C / 270°F
VA-300S-MT: Maximum Process
temperature 300°C / 570°F
VA-300S-HT: Maximum Process temperature 450°C /
840°F
VA-300S-XT: Maximum Process temperature 1500°C / 2700°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-300S sensor is compatible with the ViscoScope electronics VS-4450 and
VS-B450.
Documentation
Overview ViscoScope 300 series