Overview
The Zahn Zahn Cup is a stainless steel viscosity measurement instrument under the YINGXU brand, model Zahn 4 #. It is manufactured according to the ASTM D 4212 standard and is a portable viscosity cup. 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.
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 determines the viscosity of a certain volume of liquid by measuring the time it takes for a certain volume of liquid to flow out of the small hole at the bottom of the standard cup body. During operation, the cup body is immersed in the liquid to be tested and lifted vertically. The liquid flows out from the flow hole, and the time from the cup body leaving the liquid surface to the first breakpoint of the liquid flow is recorded. The outflow time can be converted into a kinematic viscosity value by the formula V = K (t-c).
Applications
Thicker fluids and mixtures, 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.
2. Choose the appropriate cup number (e.g. Zahn 4 #) 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
• Before use, a suitable solvent should be used to wipe the cup body clean and dry it, and special attention should be paid to cleaning the small holes in the cup body.
• Choose the appropriate cup number so that the outflow time is controlled between 20 and 80 seconds.
• Adjust the sample and flow cup temperature to the specified temperature (e.g. 23 +/- 0.5 ° C).
• When operating, lift the cup vertically quickly and smoothly, and keep the cup vertically flowing out of the liquid, with a distance of no more than 150mm from the liquid surface.
• Timing starts from the cup leaving the liquid surface until the first breakpoint of the liquid flow appears.
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.
