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Digital Bench Top Viscometer

Setting the standard in digital viscometers with simplicity in design for unmatched durability.

Ease-of-use” and “worry-free operation” are the key concepts underlying development of the TVB-10W digital viscometer.

At the instrument's score is an ingenious “torsion wire and magnetic bearing”mechanism which greatly improves durability and enables the TVB-10W to maintain its high initial repeatability with stability

of measurement. The Model TVB-10W has established itself as a product benchmark with features that include digital display, auto-stop function, and onetouch rotor mounting which allow even first time users to handle the unit with ease.

Features

• Pivotless mechanism (torsion wire + magnetic bearing) The contactless torsion wire and magnetic bearing mechanism employed eliminates parts wear. The product provides high accuracy and stable measurement and will maintain its excellent initial repeatability over time. The instrument is also designed for worry-free operation by first time users.

• Zero‧span setting function Calibration allows viscometer to be used

at accuracies higher than catalog values and compensates for unit-to-unit variances.

• Digital display Digital display for viscosity readings without error.

• Remote control function. To start and stop the main unit can be operated by outer signal (dry contact). And Using out put signal (open collector), the situation of viscometer can be confirmed by buzzer and lamp.

• One touch rotor mounting. The instrument's rod insertion method allows easy rotor mounting and removal.

• Display switching. Display can be switched between viscosity

values and indicator values (%) when the UNIT key is depressed during measurement.

• Data interchangeability. Model TVB-10W data is interchangeable

with Model B viscometer data and conforms to JIS and ISO standards.

Principle of operation

Principle of operation Photo sensorPhoto sensorMotor rotation is transmitted to the rotor via atorsion wire. Viscous torque acts on the rotorturning in the measured fluid. The torsion wirerotates with the wire in a deflected state at anangle which is proportional to the size of theviscous torque. The angle of deflection of thetorsion wire is the same as the reciprocal deflectionof slit discs A and B which are attachedto the ends of the torsion wire. Each slit disc's photo sensor reads the deflection angle of thedisc and this information is converted into aviscosity measurement which is displayed. Amagnetic bearing positioned at the lower partof the torsion wire provides non-contact supportof the rotor spindle.

[Caution]The viscometer's magnetic bearing may generatemagnetic forces around parts of the instrument.Thus objects which may be susceptible to magnetismsuch as floppy discs, magnetic cards, watches,etc., should be kept away from the apparatus.