Zahn Cup ASTM D 4212 #4
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BGD 126-4 Zahn Cup ASTM D 4212 #4
|Details/Zahn Cup||Zahn Cup #1||Zahn Cup #2||Zahn Cup #3||Zahn Cup #4||Zahn Cup #5|
|Applications||Very low viscosity||Low Viscosity||Medium Viscosity||High Viscosity||Very High Viscosity|
|Ordering Information||BGD 126/1||BGD 126/2||BGD 126/3||BGD 126/4||BGD 126/5|
Viscosity measurement can be carried out by filling up the volume of Zahn Cup with the required liquid and then placing an index finger over the orifice to stop any flow out of the liquid. A ring at the Zahn Cup handle allows the cup to be hanged perpendicularly( still with the finger stopping any liquid flow out). Prepare a Digital stopwatch and set zero. Immediately start the stopwatch when the finger is released. As soon as there is a first "break" of the flow, stop the stopwatch. The second shown is the time of the liquid flow, which is also the flow viscosity of that liquid.
Each Zahn cup has its own coefficient "K". which is marked on the cup body.
Fact Viscosity =Testing viscosity × K
The results should be reported in Zahn-seconds at a specified temperature for particular cup. To convert Zahn-Seconds to centi-stokes, please refer to ASTM D 4212, D 816, D 1084.
Centistokes x Density = Centipoise
Remark: The orifice diameter of the Zahn cup may differ slightly from the standard requirements due to some uncontrollable factors during the manufacturing process. But we ensure that the flow conforms to the standards.