First understand the role of the" oil contamination level detector ": it is used to detect the number and size of solid particles in the oil, and secondly understand the application of " oil contamination level detector ": It is applicable to those oil products, suitable for aviation kerosene, Mineral oil, synthetic oil, phosphate oil, hydraulic oil, lubricating oil, transformer oil, steam turbine oil (turbine oil), gear oil, engine oil, etc. Consider the following aspects when purchasing:

The first point is that the core component of the "oil contamination level detector" is the "oil particle sensor". This sensor available could be domestic-made and imported. The price of the domestic sensor is about 2000-3000 yuan, and the imported sensor is about 10 times the domestic price. Among them, the German sensor is the best. The testing principles of domestic and imported sensors are both "shading method" (commonly known as laser method and photoresist method). Although the testing principles are the same, the test results are very different. For example, if the same batch of oil is used with domestic sensors, the test results are not repeatable. In the first test, the standard test result of NAS1638 is level 8, and the second test may be level 9 or 10. The engineers don’t know which test results are the standard, and they are confused. But using imported sensors is different. No matter how many time you test the same batch of oil products, the test level is absolutely the same. This is the main difference between using domestic sensors and imported sensors. Many companies only emphasize the measurement principle of "laser method" or "shading method" in the selection, which is not correct. With the same test principle, the sensors are different, and the test results obtained are different. This should be paid special attention to in the selection. Should highlight the use of imported sensors.

The second point is that the detector should comply with as many test standards as possible. Most of the instruments produced by some companies have only three common standards. Different oil products use different standards. The responsible manufacturers will use ①NAS1638 ②ISO4406 ③GJB420A ④GJB420B ⑤SAE749D ⑥SAE4059E These 6 standards are all placed in the instrument for users to choose. We encountered many manufacturers who bought the instruments and found that they did not have the standards they needed. They returned the instruments to the manufacturers and asked the manufacturers to reinstall the standards they needed. In another case, the tester was bought back. The standard was sufficient at that time. There was no problem at all. After a few years, the company had a new project, used a different oil, and changed the test standard. They realized that their tester did not support the required standard. They came back to the manufacturer and the manufacturer needs to charge them to upgrade the software. Therefore, when you first buy, try to buy more standard instruments. Now there are 6 built-in standards for good manufacturers, which is also one of the important factors to consider when purchasing products.

The third point is that on the peripheral circuit of the instrument, it is best to choose an industrial computer as the peripheral circuit. The industrial computer is a small computer that processes data quickly, accurately, and massively. The test results are more accurate than the equipment without the industrial computer. High and fast, the storage result is hard disk storage, you can store ten thousand results, or you can use U disk to export, the software installation is very convenient. Choose equipment, try to use instruments that use industrial computer circuits.

Fourth, try to choose a color touch screen with various accessories, simple panels, and easy-to-use products. Use a color screen with a touch function, so there are basically no buttons. The more buttons you have, the greater the chance of bad buttons. Because the buttons are prone to spoil. Less button means the chance of bad buttons will be greatly reduced. The more accessories, the more convenient it is to use.

The fifth point is to have complete accessories set: high-pressure hose, low-pressure hose, joint nut, U disk, sampling bottle, touch pen, printing paper and so on, as many accessories as possible, so it will be more convenient to use.