The Rotational Viscometer (RV) (Figure 1 and Figure 2) is used to determine the viscosity of asphalt binders in the high temperature range of manufacturing and construction. This measurement is used in the Superpave PG asphalt binder specification.
What is LV spindle?
Spindle LV-5 is an optional spindle designed to increase measuring range. Spindles LV-2C and LV-3C are optional "cylindrical spindles" offering geometry for calculating shear rates. MAGNETIC SPINDLE COUPLING OPTION** Magnetic spindles with a special coupling system are also available.
What is UL viscosity?
Maximum recommended viscosity for measurement with the UL Adapter is 2000 cP (mPa•s). If viscosity exceeds 2000 cP, the material being measured may be too viscous to immerse the spindle into the sample chamber; damage to internal parts of the viscometer may result.
How do you choose viscosity spindle?
When the viscosity of a fluid is not known. Generally, if the reading is above 100% at the lowest speed, the next smallest spindle should be used. If the reading is below 10% at the highest speed, the next largest spindle should be used.
How do you use a Brookfield viscometer?
https://www.youtube.com/watch?v=ONoV98kMkYA
How does a Brookfield viscometer measure viscosity?
The Dial Viscometer rotates a sensing element in a fluid and measures the torque necessary to overcome the viscous resistance to the induced movement. This is accomplished by driving the immersed element, which is called a spindle, through a beryllium copper spring.
What is a viscometer used for?
A viscometer is an instrument used to measure fluid viscosity and the flow properties of liquids. Let's discuss the various styles of viscometers, their internal characteristics and factors that go into performing a precise and repeatable viscosity measurement.
How is viscosity measured?
The viscosity of a liquid (see Viscosity) is measured using a viscometer, and the best viscometers are those which are able to create and control simple flow fields.
How does Brookfield viscometer work?
Brookfield viscometers employ the well-known principle of rotational viscometry; they measure viscosity by sensing the torque required to rotate a spindle at constant speed while immersed in the sample fluid. The torque is proportional to the viscous drag on the immersed spindle, and thus to the viscosity of the fluid.
What is Brookfield viscosity test?
The Brookfield Dial Reading Viscometer measures fluid viscosity at given shear rates. Viscosity is a measure of a fluid's resistance to flow. ... The Dial Viscometer rotates a sensing element in a fluid and measures the torque necessary to overcome the viscous resistance to the induced movement.
How does a viscosity measure viscometer?
Also known as u-tube or glass viscometers, capillary viscometers are often used in laboratory settings. Viscosity is measured by timing how long it takes for a transparent or translucent fluid to flow between two points of a capillary tube. ... Capillary viscometers can be manual or automatic.Aug 14, 2013
What are Brookfield viscosity units?
The Brookfield KU-2 Viscometer measures fluid viscosity in Krebs units. A paddle type spindle is driven at 200 rpm by a constant speed motor. ... The digital display of the Viscometer shows viscosity in Krebs Units (KU), the associated grams value (gm), and viscosity in centipoise (cP).