![]() If you would like to use the viscometer in the process for continuous measurement of the viscous liquid, then there are a few more questions on this topic for you to answer, besides these initial ones. What kind of viscometer (handheld-, table- or built-in device) do you need?ĭo you need a table - viscometer, which you might like to use once as a mobile device – or should it be really a portable (handheld) instrument? What basic questions should you ask yourself before buying – which points should you discuss with the seller? Below you may find a short list of possible questions and answers. To learn more about viscometer applications and the importance of fluid behavior, please watch the video and read the informative brochures provided below. Whether in use in the laboratory or on the production floor, PCE Instruments' easy-to-use viscometer devices provide accurate, reliable viscosity measurements. 1 millipascal-second (mPa.s) = 1 centipoise (cP) Nature of your fluid (Newtonian, non-Newtonian, dilatant, thixotropic, etc.) Required rotational speeds or shear rates Viscosity range of your fluid (low, medium or high) ![]() To determine the right viscometer for your application, consider the following factors: Benchtop or stationary viscometer devices are complex rheological measuring systems that allow for a more detailed examination of liquid samples. Handheld or portable viscosity meter devices allow users to take simple, single-point measurements in the field and in the lab. PCE Instruments offers a variety of handheld, portable, benchtop and in-process, real-time viscometer products that measure the absolute / dynamic (shear) and kinematic viscosity of fluids. Companies can save money by placing a viscometer in a production line and making fluid viscosity measurements in real time. A viscometer can be an important component in process and quality control. The technical term to refer to this is extensional viscosity.Ī viscometer is frequently used in laboratories, but it also has practical applications in factories and other industrial environments. However, a fluid's viscosity also may be measured on the basis of stretching. Rotational viscometers with rotating spindles or rotors, also known as "cup and bob" or Searle viscometers, are the most common tools used to measure the shear viscosity of fluids. ![]() The term viscosity typically refers to shear viscosity, i.e., how a material reacts to being sheared. Rotating bobs are more common, rotating cups reduce the likelihood of vortex formation, and "cone and plate" viscometers create a constant shear rate at any speed.A viscometer, viscosity meter or rheometer is a measuring instrument used to determine a fluid's internal flow resistance or viscosity. Rotational viscometers use the concept of torque to measure the effort required to turn a disk or bob in a fluid.This can be done electronically for opaque fluids. Falling ball viscometers measure the time it takes for a sphere of a known size and density to descend through a stationary liquid. ![]() You calculate viscosity by measuring the amount of time it takes for the liquid to move between two marks. Liquid is drawn by suction into the upper bulb and allowed to flow down into the lower bulb. Glass capillary viscometers or Ostwald or Ubbelohde viscometers consist of a U-shaped glass tube held vertically in a controlled temperature bath.What Are the Different Types of Viscometers? Viscometers measure using a single flow condition. In general, viscometers move an object through a stationary fluid or move the fluid past a stationary object to measure the friction between the fluid and the object or surface. An example is the slower flow of syrup from a container - syrup is more viscous than water. Viscometers are instruments used to measure viscosity, the internal friction of the layers of a liquid in motion. Viscometers or viscosimeters are important to many industries, including the adhesive, biotech, chemical, food, paint, petroleum, and pharmaceutical industries. Instruments used to measure the viscosity of a fluid available in a variety of configurations.
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