1.what is viscosity？
The internal friction between fluids is called fluid viscosity. Viscosity is a property of a fluid that measures the internal friction between molecules when a liquid moves under the action of an external force. Viscosity reflects the internal friction of the oil and is an indicator of the oiliness and fluidity of the oil. In the absence of any functional additives, the lower the viscosity, the lower the oil film strength and the poorer the fluidity.
Kinematic viscosity refers to the measurement of the internal friction of a liquid flowing under the action of gravity. Its value is the ratio of the dynamic viscosity to its density at the same temperature, expressed in square meters in seconds in the International System of Units. Usually centistokes (CST) are used as the unit. 1 centiStokes = 10-6 square meters seconds = 1 square millimeter seconds
2.The significance of viscosity in lubricants
Lubricating oil is a liquid lubricant used in various types of machinery to reduce friction and protect mechanical and machined parts. It mainly plays the role of lubrication, cooling, rust prevention, disinfection, sealing and buffering. Viscosity is a key parameter for evaluating lubricating oil quality. Viscosity indirectly affects the starting performance, wear level, power loss and working efficiency of the engine. Only by selecting lubricating oil with appropriate viscosity can the engine work stably and credibly, get more efficient work efficiency and extend service life.
As the viscosity increases, the flow properties deteriorate, which will reduce the power of the engine, increase the fuel consumption, and even cause difficult starting.
If the viscosity of the lubricating oil is too high, the load-bearing capacity of the oil film will be reduced, so that the lubricating layer cannot be maintained between the friction surfaces, increasing the wear and reducing the service life.
3.What is the role of Yateks oil sensor?
YTS31 applies the world advanced piezoelectric resonant MEMS components. With the internal integration of high-precision signal sampling and processing unit as well as the advanced algorithm, it can automatically provide real-time fluid density, viscosity and temperature data. The 20 ℃ density, kinematic viscosity, viscosity index and viscosity of 40 ℃ and 100 ℃ can also be acquired through the interior powerful calculating program.
The density measurement accuracy :0.001g / cm3, viscosity measurement range:0.3~400mPa·s, measurement accuracy: 2%, temperature measurement range:-40~120℃.
It is suitable for online monitoring of viscosity and density of various lubricating oils, hydraulic oils, gear box oils, paint inks, etc.