A special indicator allows for express control of the purity of fuels and oils.


On the way from the dispensing capacity of the manufacturer to the consumer, fuels and lubricants, licking the walls of numerous pipelines, tanks, barrels, cans, absorb a lot of dirt. In the engine, its own is added to it - wear products. The oil loses its properties before the due date, quickly blackens, oxidizes. How to determine if it's time to change it?

If it were not for the long proboscis of the photoelectric sensor probe, the socket of the power supply plug and the electronic display, the indicator can be easily confused with the probe of the spark plugs - their bodies are so similar. The “eyes” of the device are the emitter and photodetector hidden in the probe nose. Once in the analyzed liquid, the opponents examine each other through the medium separating them and report a “visual loss” to the electronic unit. Electronics converts the data into percent liquid contamination and displays them on a digital indicator.

The result obtained, of course, is a relative value: it largely depends on the uniform distribution of contamination in the sample volume, and on the accuracy of the calibration of the device. For example, to determine the contamination of the engine oil, its sample must be taken immediately after the engine is stopped, until the suspended particles settle on the bottom of the crankcase. And to drain all the oil is not required at all. One drop from the probe is enough, which is placed directly in the sensitive area at the working end of the sensor. If the oil has time to settle, do not be too lazy to mix it well - of course, not a probe probe, otherwise there is a risk of damaging its sensitive elements.

It is important to note that indicators control the relative purity of technical fluids and are not at all suitable for research purposes. Therefore, before testing, it is necessary to store reference parameters in the memory of the device, regarding which a report will be made. A reference can be, for example, a canister of oil from a company store or a product purity class specified in the accompanying documents. So, the factory adjustment provides that the indication “0.00” corresponds to an engine oil with a purity class (GOST 17216–71) no worse than the thirteenth. The deviation - for example, "2.00" - indicates that for every 100 g of pure oil there are about 2 g of impurity. Conversely, if the indicator readings have a dot at the end of the number (for example, “0.15.”), This demonstrates the superiority of the test medium over the selected standard. It should also be remembered that oils from different manufacturers may vary in color. Therefore, in order to test the contents of a certain Shell package, first buy a can of real Shell oil and use it to tart the device.