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Rotational Viscometers
Plasmost Enterprise Sdn BhdType: Sale
Rotational viscometers have become a standard in virtually all industries.
Description
Rotational viscometers have become a standard in virtually all industries. They measure viscosity by sensing the torque required to rotate a spindle at constant speed while immersed in fluid. The torque is proportional to the viscous drag on the spindle; thus the sample viscosity.
Rotational viscometers offer several advantages:
■ The continuous rotation of the spindle allows measurements to be made over time, permitting analysis of time-dependent fluids
■ The rate of shear is constant, so both Newtonian and non-Newtonian fluids can be tested
■ By rotating the spindle at several different speeds, shear dependent behavior can be analyzed
Rotational viscometers are the industry standard in determining absolute viscosity of all types of liquids with viscosities as high as 320 million centipoise. BYK-Gardner offers digital models for low – medium – high viscosity materials.
Selecting the Proper Viscometer
While various models of viscometers are recommended for high, medium, and low viscosity applications, these designations are intended only as guidelines. Multiple speeds and interchangeable spindles on each viscometer provide many viscosity ranges for flexibility in application. Selecting the correct model will ensure maximum sensitivity and accuracy in the measured viscosity range. Some of the factors to consider in selecting a viscometer are: the viscosity range of the samples, how much sample is available, do you need to monitor the temperature, do you need to record the viscosity values.
Special Purpose Viscometers
There are two models primarily designed for the Paint and Coatings industries. The KREBS viscosity or Stormer Viscometer that has a fixed speed motor and a paddle style spindle. The KREBS viscometer is designed to comply with ASTM method D562.
For applications that require a higher shear force viscosity measurement the Cone & Plate Viscometers (CAP models) are recommended. The sample is confined between a moving cone-shaped spindle and a platen that applies a higher shear stress and shear rate.
Rotational viscometers offer several advantages:
■ The continuous rotation of the spindle allows measurements to be made over time, permitting analysis of time-dependent fluids
■ The rate of shear is constant, so both Newtonian and non-Newtonian fluids can be tested
■ By rotating the spindle at several different speeds, shear dependent behavior can be analyzed
Rotational viscometers are the industry standard in determining absolute viscosity of all types of liquids with viscosities as high as 320 million centipoise. BYK-Gardner offers digital models for low – medium – high viscosity materials.
Selecting the Proper Viscometer
While various models of viscometers are recommended for high, medium, and low viscosity applications, these designations are intended only as guidelines. Multiple speeds and interchangeable spindles on each viscometer provide many viscosity ranges for flexibility in application. Selecting the correct model will ensure maximum sensitivity and accuracy in the measured viscosity range. Some of the factors to consider in selecting a viscometer are: the viscosity range of the samples, how much sample is available, do you need to monitor the temperature, do you need to record the viscosity values.
Special Purpose Viscometers
There are two models primarily designed for the Paint and Coatings industries. The KREBS viscosity or Stormer Viscometer that has a fixed speed motor and a paddle style spindle. The KREBS viscometer is designed to comply with ASTM method D562.
For applications that require a higher shear force viscosity measurement the Cone & Plate Viscometers (CAP models) are recommended. The sample is confined between a moving cone-shaped spindle and a platen that applies a higher shear stress and shear rate.
Company Information
| Name | : | Plasmost Enterprise Sdn Bhd |
|---|---|---|
| Business Type | : | Measuring Equipment & Supplies |
| Main Product | : | Wave Scan Dual, Thinkness Gage, Gloassmeter, Haze Meter, Dispermat Sl, Dispermat Cy3-Plus, TML Basket Mill, Pendulum Impact Tester, Digital Impact Tester, Abrasion Tester |
| Year Established | : | 1995 |
| Location | : | Penang |
| Website | : | http://www.plasmost.com.my |
