| Customization: | Available |
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| After-sales Service: | Lifetime Technical Support |
| Warranty: | 2 Year |
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Underlying test standard ASTM D2272
RPVOT stands for Rotating Pressurized Vessel Oxidation Test as per ASTM D2272. This test is designed to be a performance test to measure the remaining test life of an in-service oil. The oil is stressed in a pressure vessel with water, copper catalyst, heat and pure oxygen. The test is "completed" when the pressure drops by a specified amount below the maximum pressure developed. The pressure drop is indicative of the base oil undergoing rapid oxidation and the completion of the test should indicate that the formulated and natural antioxidants have been fully depleted.
Significance Oxidation is a critical mode of lubricant degradation. As oil oxidizes it forms acids and insoluble oxidation products, which can lead to formation of sludge or varnish. These degradation products can coat bearing and oil cooler surfaces, preventing adequate cooling of the bearings. Areas with tight tolerances such as hydraulic control valves can also become coated causing operational issues
Applications The Oxidation Test Apparatus for Lubricants is used to evaluate the oxidation stability of lubricating oil.
| 1 | Power supply | AC(220±10%)V, 50Hz |
| 2 | Constant temperature point | 150.0±0.1ºC; 140.0± 0.1 ºC |
| 3 | Temperature control accuracy | ±0.1ºC |
| 4 | Rotary motor | 100±5r/min |
| 5 | Main box power | 200W |
| 6 | Main box dimensions | 440×310×350 (mm) |
| 7 | Projectile body power | 1KW |
| 8 | Projectile body dimensions | 440×220×350 (mm) |
| 9 | Digital display pressure range | 0~1600KPa |
| 10 | Digital pressure sensor accuracy | ±2‰ |
For the test, 50 g of the oil and 5 g distilled water are weighed in a reaction vessel. A polished copper coil is placed into the mixture of oil and water as a catalyst. The reaction vessel is screwed tightly into a pressure-tight stainless steel container. The internal pressure of the pressurised tank can be constantly recorded using a manometer. The apparatus is now filled with pure oxygen up to a pressure level of 620 kPa.
The tank with the copper spiral and the oil under oxygenated pressure and exposed to water rotates at 100 rotations per minute at 150 °C. This increase in temperature leads first of all to an increase in internal pressure in the pressure-tight container. The extreme conditions (oxygen, copper, water, temperature) then inevitably lead to oxidation of the oil being tested. The oil reacts with the oxygen, causing the original set oxygen pressure to drop. The ensuing decrease in oxygen demand is recorded as a pressure drop. The actual variable measured is the time span which the internal pressure takes to fall 175 kPa below the maximum. The more time passes until this drop in pressure, the more resistant the oil is to oxidation.
| Pre-sale Service | 1.The professional sales team will reply to the inquiry in real time; | |
| 2.Customize suitable solutions according to the needs of different customers; | ||
| 3.Provide product technical parameters/operation manuals and evaluation reports, etc.; |
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| After-sale Service | 1.From the date of purchase within one year instrument, is a product quality problem free repair replacement, lifetime supply of maintenance and technical services. |
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| 2.Technical Support |
(1)Our technical team supports our customers at all time with our long experience, expert advice and the unlimited spirit and always be for providing the best customer service. | |
| (2)Training how to install the machine,you can arrange your engineer to our company to get free training. | ||
| (3)If necessary, we can also arrange our engineer to your company for training and commissioning at your cost. | ||
| 3.The instrument has found anomalies or malfunctions please contact us to arrange the most convenient treatment options. | ||
If you are interested in our Automatic Oxidation Stability Testing Equipment by RPVOT Rotating Oxygen Bomb Method product or have any questions, please feel free to contact us.
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