Overview
The ZAHN Zain Cup is a stainless steel portable viscosity measurement instrument manufactured according to the ASTM D 4212 standard. It is suitable for quickly determining the consistency of liquids in the field or during production. It is usually used to determine the viscosity of paints or inks. The series is available in a variety of models to suit liquids with different viscosity ranges.
Features
1. Use high-precision computerized machining for production.
2. Mirror polishing and smooth surface preparation can achieve high flow Accuracy and easy maintenance.
3. Strict mass and compliance checks.
Principle
The ZAHN Zain cup determines the viscosity of a volume of liquid by measuring the time it takes for a volume of liquid to flow out of a standard hole in the bottom of the cup under the action of gravity. The outflow time and the kinematic viscosity of the liquid are converted by the formula V = K (t-c), where V is the kinematic viscosity (cSt), t is the outflow time, and K and c are the constants corresponding to the cup number.
Applications
Paints, inks
Steps
1. Use a suitable solvent to wipe the cup body clean and dry it before use, and pay special attention to cleaning the small holes in the cup body.
Select the appropriate cup number so that the outflow time is controlled between 20 and 80 seconds.
3. Adjust the filtrated sample and flow cup temperature to (23 degrees plus or minus 0.5 degrees) or another agreed temperature.
4. Insert your finger into the small ring on the handle to quickly and smoothly lift the cup body vertically from the sample to be tested.
5. When the cup body is broken off from the liquid level, pay attention to keep the cup body vertical when the liquid flows out, and the distance from the liquid level should not exceed 150mm.
6. When the first breakpoint stops, the number of seconds of the outflow time indicates a certain viscosity value; the difference between the two test values should be less than 5% of the average value.
7. Convert the outflow time into kinematic viscosity according to the formula V = K (t-c).
8. Immediately clean it with a suitable solvent, never with a metal brush.
9. After drying, store again.
Notice
• Please pay special attention to cleaning the small holes in the cup body.
The outflow time should be controlled between 20 and 80 seconds.
• The sample and flow cup temperature should be adjusted to the specified temperature (e.g. 23 +/- 0.5 ° C).
• When measuring, it is necessary to quickly and smoothly lift the cup body vertically, and keep the cup body vertical, and the distance from the liquid surface does not exceed 150mm.
The difference between the two test values should be less than 5% of the average value.
• Use a suitable solvent immediately when cleaning, never use a metal brush.
• Store after drying.
