difference between viscometer and rheometer? which can measure magnetic properties
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What are rheometers?
Depending on who you ask, you might hear that rheometers are a subset of viscometers, or the other way around. Technically, viscometry is part of rheometry, and rheometry is part of rheology — meaning that viscosity falls under the greater umbrella of rheology.
Regardless of how they’re categorized, the function of rheometers is to measure the rheological properties of a fluid, which also yields the viscosity of non-Newtonian fluids.
To accomplish their task, many rheometers exert some type of shear force upon the fluid being tested. Measuring the results of this stress yields the rheological properties of the fluid, including its viscosity (which, in rheology, is not represented by a single value).
Should I use a viscometer or a rheometer?
Whether you need to use a viscometer or a rheometer to monitor viscosity in your processes is wholly dependent upon what fluids you’re working with. Some viscometers (such as a resonant frequency viscometer) may impart some shear on the fluid, thus providing some of the input you would receive from a rheometer. Some manufacturers may need both, while others may be able to use one or the other — and examining every application out there goes far beyond the scope of this article.
Depending on who you ask, you might hear that rheometers are a subset of viscometers, or the other way around. Technically, viscometry is part of rheometry, and rheometry is part of rheology — meaning that viscosity falls under the greater umbrella of rheology.
Regardless of how they’re categorized, the function of rheometers is to measure the rheological properties of a fluid, which also yields the viscosity of non-Newtonian fluids.
To accomplish their task, many rheometers exert some type of shear force upon the fluid being tested. Measuring the results of this stress yields the rheological properties of the fluid, including its viscosity (which, in rheology, is not represented by a single value).
Should I use a viscometer or a rheometer?
Whether you need to use a viscometer or a rheometer to monitor viscosity in your processes is wholly dependent upon what fluids you’re working with. Some viscometers (such as a resonant frequency viscometer) may impart some shear on the fluid, thus providing some of the input you would receive from a rheometer. Some manufacturers may need both, while others may be able to use one or the other — and examining every application out there goes far beyond the scope of this article.
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