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viscometers

Functional Principle
Levitronix has developed a Bearingless viscometer for the semiconductor industry, which is based on magnetic levitation technology. With the Levitronix technology, a slice shaped rotor is suspended and driven by the magnetic field of a motor/bearing stator through the wall of the viscometer casing without mechanical contact. The viscometer head consists of two parts: a viscometer rotor, which contains a rotor magnet, and a viscometer casing. Both components are fabricated from chemically resistant high-purity fluorocarbon resins. The levitated rotor slice rotates within the process fluid. By avoiding mechanical friction, the motor torque is determined by the fluid friction losses in the measurement gap and therefore is proportional to fluid viscosity. This leads to a highly accurate viscosity measurement and also helps to minimize particle generation.

Figure 1: Interfacing options

System Benefits Continuous in-line viscosity measurement with fast response time Ultra-pure design with virtually no particle generation Wetted components are fabricated from PTFE or PFA Interface with a variety of display and control capabilities Easily mounted in any direction pipe line or bypass stream No mechanical wear with reduced down time and maintenance costs

Figure 2: Bearingless viscometer BVM-1.1

Figure 3: Exploded view of bearingless viscometer BVM-1.1

Figure 4: Interfacing with bearingless viscometer BVM-1

Specifications:

* Please contact Levitronix for special requirements.
1. Different viscometer rotors necessary.