Overview
The ZAHN Zahn Cup (model: Zahn 3 #) is a stainless steel viscosity measurement instrument manufactured according to the ASTM D 4212 standard. It is a portable viscosity cup suitable for quickly determining the consistency of liquids in the field or production process. It is usually used to determine the viscosity of paints or inks.
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
ZAHN ZAIN cup through the measurement of a certain volume of liquid under the action of gravity from the standard flow hole time, and according to the formula V = K (t-c) the outflow time into kinematic viscosity value, so as to achieve rapid determination of viscosity.
Applications
Medium viscosity mixed paint, varnishes
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
• The cup should be thoroughly cleaned and dried before use, paying special attention to cleaning the flow hole.
• Choose the appropriate cup number to ensure that the outflow time is between 20 and 80 seconds.
• Before testing, adjust the temperature of the sample and cup body to the specified temperature (e.g. 23 +/- 0.5 ° C).
• When operating, lift the cup quickly, smoothly and vertically.
• Keep the cup vertical during measurement, and the distance between the bottom of the cup and the liquid level does not exceed 150mm.
• Take the first breakpoint of the liquid outflow as the timing end point.
The difference between the two test results should be less than 5% of the average.
• Use a suitable solvent when cleaning, and metal brushes are strictly prohibited.
• Clean and dry after use.
