What are the functions of viscometer?

What are the functions of viscometer?

A viscometer (also called viscosimeter) is an instrument used to measure the viscosity of a fluid. For liquids with viscosities which vary with flow conditions, an instrument called a rheometer is used.

How do you test for viscosity?

Ways to Measure Viscosity

1. Capillary Viscometer. The earliest methods for measuring viscosity were based on using capillary tubes and measuring the time it took for a volume of liquid to pass through the length of the tube.
2. Zahn Cup.
3. Falling Sphere Viscometer.
4. Vibrational Viscometer.
5. Rotational Viscometer.

What is the importance of Saybolt viscosity test?

The Saybolt FUROL viscosity test occurs at 120 °F (49 °C), or more recently, 50 °C (122 °F), and uses a larger calibrated tube. This provides for the testing of more viscous fluids, with the result being approximately 1⁄10 of the universal viscosity.

How does Saybolt viscometer work?

A device used to measure the viscosity of a fluid. The saybolt viscometer controls the heat of the fluid and the viscosity is the time is takes the fluid to fill a 60cc container. The viscosity of a fluid is a measure of its resistance to gradual deformation by shear stress or tensile stress. …

How do you convert sus to cSt?

Multiply the cSt value by 4.632 if the test temperature was 100 F. The result is the cSt value converted to SUS. For example: 100 cSt tested at 100 F is equivalent to 463.2 SUS because 100 x 4.632 = 463.2.

What is viscosity test of bitumen?

The viscosity test is conducted to determine viscosity of a fluid which is the property by which it offers resistance to flow. Higher the viscosity, the slower will be the movement of liquid. The viscosity affects the ability of binder to spread, move into and fill up the voids between aggregates.

What is the value of viscosity of bitumen?

The standard penetration value of bitumen viscosity grade VG-20 is 60 mm at 25 °C. The absolute viscosity of VG-20 bitumen is 1600 to 2400 poise at 60 °C.

Why is viscosity important in bitumen?

This unique temperature / viscosity relationship is important when determining the performance parameters such as the adhesion, rheology, durability and application temperatures of bitumen. Therefore, accurate viscosity analysis of bitumen at different temperatures has become an important test.

What is bitumen test?

Bitumen Tests- Softening Point Test The test is conducted by using Ring and Ball apparatus. A brass ring containing test sample of bitumen is suspended in liquid like water or glycerin at a given temperature. Generally, higher softening point indicates lower temperature susceptibility and is preferred in hot climates.