What does SSU mean in viscosity?
What does SSU mean in viscosity?
Saybolt Universal Seconds
Saybolt Universal Seconds, SSU, is the kinematic viscosity as determined by the time in seconds required for 60 cc of fluid to flow through a standard orifice.
What is the viscosity of water in SSU?
31
Viscosity of some Common Liquids
| centiStokes (cSt, 10-6 m2/s, mm2/s) | Saybolt Second Universal (SSU, SUS) | Typical liquid |
|---|---|---|
| 0.1 | Mercury | |
| 1 | 31 | Water (20oC) |
| 4.3 | 40 | Milk SAE 20 Crankcase Oil SAE 75 Gear Oil |
| 15.7 | 80 | No. 4 fuel oil |
What is Mpas in viscosity?
The measurement unit of viscosity is Pa·s (pascal second) or mPa·s (millipascal second). As viscosity value increases, the force due to viscosity increases as well. In addition, cP (centipoise) is the conventional measurement unit.
What is an SSU?
Single Subscriber Unit. SSU. System Synchronization Unit (Newbridge) SSU. System Supervisory Unit.
How do you convert centistokes to SSU?
Example: Converting Centistokes to SSU Viscosity Calculate 4ac = 4 × 0.226 × -195 = -176.28. Calculate 2a = 2 × 0.226 = 0.452. Calculate SQRT(b2 -4ac) = √1076.28 = 32.81. Calculate SSU viscosity t = [-b + SQRT(b2 -4ac)] / [2a] = 138.9 seconds.
How do you convert centistokes to Centipoise?
Centipoise = centistokes x specific gravity where specific gravity is assumed to be 0.8 (except for water). To find the exact cp of your fluid: cp = cSt x (weight per gallon x 0.120).
What is a centistoke equal to?
Kinematic viscosity is often measured in the CGS unit centistokes (cSt), which is equivalent to 0.01 stokes (St). You guessed it! One stoke is equivalent to one poise divided by the density of the fluid in g/cm3. The SI unit for kinematic viscosity is square meters per second (m2/s).
How do you calculate the viscosity formula?
There are several formulas and equations to calculate viscosity, the most common of which is Viscosity = (2 x (ball density – liquid density) x g x a^2) ÷ (9 x v), where g = acceleration due to gravity = 9.8 m/s^2, a = radius of ball bearing, and v = velocity of ball bearing through liquid.
What is Milli pascal?
Noun. millipascal (plural millipascals) A unit equal to one thousandth of a pascal (symbol mPa).
What is Mili Pascal second?
The millipascal-second is a unit of measurement of dynamic viscosity. A millipascal-second (mPa·s) is a derived metric SI (System International) measurement unit of dynamic viscosity.
What is SSU commando?
The Special Security Unit (SSU) is a specialized counterterrorism and security unit of the Sindh Police in Pakistan.
Is MFI the best way to measure viscosity?
One should be aware that even though MFI is the dominate method used to characterize how plastic will flow in a mold, it does not actually provide a measure of viscosity. Melt Flow Index (MFI) is a measure of how many grams of a polymer flow through the die in ten minutes.
What is melt flow index (MFI)?
Melt Flow Index is an assessment of average molecular mass and is an inverse measure of the melt viscosity; in other words, the higher a MFI, the more polymer flows under test conditions. Knowing the MFI of a polymer is vital to anticipating and controlling its processing.
How can I measure viscosity at a shear rate of zero?
You cannot measure viscosity at a shear rate of zero because viscosity is a measurement of resistance to flow. In order to measure resistance to flow you have to make the polymer flow, and as soon as you do so the shear rate becomes some non-zero value.
What is the Saybolt universal Sus viscosity equivalent?
1) The Saybolt Universal SUS viscosity equivalent (SSU or SUS) to a given kinematic viscosity varies with the temperature at which the determination is made. Check ASTM D 2161 “Standard Practice for Conversion of Kinematic Viscosity to Saybolt Universal Viscosity or to Saybolt Furol Viscosity”.