Adjust speed to application
Easily swap out samples
Adjustable oil volume
Adjust temperature to application
Using a high-energy air impeller, we create a constant windage effect that introduces air into the oil. While some of this air is rejected by the fluid, a portion becomes entrained within it. With Oilpas™ optical imaging technology, we measure the volume of air entrained in the fluid and determine aeration % as an inherent property of the oil. This testing method is both accurate and repeatable, providing a reliable way to evaluate oil aeration.
By controlling key variables, we can simulate a wide range of application scenarios, adjusting factors such as speed, temperature, volume, and the volume of the aeration source. Both steady-state and dynamic changes in temperature and speed can be replicated with precision.
We have been improving our testing process and controls for over the years. Today we are able to provide a repeatable and reliable testing method for your project. The next stepas are:
Information exchange, testing parameters, and preliminary testing,
Reception of samples, testing and reporting of results
Review of results, insights, feedback and comments
Aeration % during test, Average Aeration %, and Air Release. We do 360 measurement to ensure a statistical relevant result for the aeration.
Average Bubble Diameter [µm], Gives information on the stability of entrained air, and on the oil sponginess
Bubble histogram and number of bubbles >500µm for understanding the fluid behavior on heat transfer, lubricity, and bulk modulus.
We are able to test any oils, emulsions, and fuels. Usually we test transmission fluids, engine oils, hydraulic fluids, and compressor oils because those are the applications that pose the highest challenges with air entrainment.
Air is injected directly into the oil with a strong vortex and dispersed with a high-energy impeller. The amount of air that is dispersed by the oil is a characteristic of the oil. It may vary depending the type of oil and the formulation by several points.
Oil aeration % average during testing, average bubble dimension, bubble count histogram, and more statistical information about how aeration is entrained during testing.
We can see bubbles starting from 5 micrometer [μm] and up in some fluids, but usually bubbles start at around 10 μm to 15 μm upto several mm in diameter. At that point the coalescense is faster and the air is released immediately. Oils that perform poorly in oil aeration can keep in dispersion bubbles of 5 mm (~3/16”) in size.
Yes, we are able to test aeration from 20°C to +150°C. Air entrainment is variable with temperature, the lower the temperature, the higher the tendency of the air to stay in dispersion. Besides variable temperature studies, we also do other oil aeration studies with different volumes and speeds.