How to use a lubricating oil analyzer and how to choose a lubricating oil analyzer

The correct use of lubricating oil plays an extremely important role in improving the operating performance of the unit, prolonging the service life of the unit, and saving economic expenses. Therefore, it is necessary to pay attention to the following when using it.

1) Regular inspection and timely replacement.

With the passage of time of the machine, the lubricating oil in the refrigeration system will continue to change qualitatively, so regular sampling and laboratory analysis, or color and phase comparison inspection, when the oil quality changes to a certain extent, it should be replaced in time. Under normal circumstances, the lubricating oil in the refrigeration system should be changed once a year.

2) Oil change requirements.

Look for the brand of new oil change, it is best not to easily change the brand of refrigeration oil, and it is strictly forbidden to use general engine oil instead of refrigeration oil.

Before replacement, all the oil in the system is released, and some new oil is added, and all the old oil remaining in the system is washed and released, so as to prevent the original oil from destroying the performance indicators of the new oil and affecting the service life of the unit.

When changing the oil, try to drain the remaining oil from the oil cooler. Thoroughly remove sediment and rust in the oil tank and air extraction device, and disassemble, inspect and clean the oil pump and filter to ensure that the replaced lubricating oil is clean and pure, and well lubricated.

3) Precautions to be taken when using the product.

During the shutdown of the unit, when the lubricating oil and refrigerant coexist in the system, the oil lubricating oil should be energized and heated to keep the oil temperature within the specified range.

In winter, when lubricants and refrigerants coexist within the system, how they are managed should be determined by the type of aircraft. Centrifugal chillers, especially centrifugal chillers with R11 as the refrigerant, should keep the electric heater energized to stabilize the oil temperature within the specified range. The screw and piston chillers can not be energized to the electric heater, and then turn on the power supply of the oil heater before use, heat for 24h, and then start the machine.

The oil quality tester can measure the trace moisture index of the oil at one time.

1.Easy to operate, all operations can be completed by using the touch screen;

2.Full Chinese operation prompt, real-time display and real-time saving of detection results;

3.It can detect any kind of oil without oil number;

5.With micro printer, it is convenient to save data;

6.Unique anti-corrosion and anti-fouling coating to protect wet parts;

7.Built-in microprocessing for real-time data analysis;

8.Excellent long-term stability and reliability.

How to use:1Place the instrument case on a horizontal table and open the upper lid of the cabinet.

2.Turn on the 220V power supply and turn it on"Power supply"On, the red light is on, and the instrument is powered on and self-tested successfully. LCD display"welcome to use thy-21a"After that, it enters the standby state and warms up for more than 10 minutes.

3.Adjust "0". Clean the oil cavity with petroleum ether with a boiling range of 60 90 to soak the oil cavity, and then wipe it clean with a dry cotton ball (2 times).

Press the [MZ] button to display the LCD screen"put pure"After standby, at this time, the new oil (i.e., the clean oil of the same model as the oil being tested) is dropped into the oil cavity for 3-5 drops.

4. When the oil surface in the oil chamber is closed, press the [Enter] button, the instrument enters the zeroing state, and the LCD screen displays "MZ.......

5. Manually adjust the zeroing knob to reduce the LCD display value, when the display value is within the range, the buzzer will sound, and the LCD screen will display "mz.".ok!", the zeroing is completed, and it returns at the same time"thy-21a"。To ensure that the zero point is reliable, press the [mz] key again to observe the zero point.

6. Wipe the oil cavity with a dry cotton ball, and then drop the petroleum ether into the oil cavity; Wipe the oil cavity off with a dry cotton ball (2 times) later.

7. Press the [qt] button, and the LCD will display "put old.""After standby.

8. Drop the measured oil into the right oil cavity for 3-5 drops.

9. When the oil surface in the oil chamber is closed, press the [Enter] button immediately, the red light will be on, and it will enter the rapid detection state.

10. The LCD screen displays the test data, and compares the data with the reference value of the scrap index to judge the oil quality.

The main thing is to look at the quality of the instrument. First of all, when purchasing the instrument, do not buy on the conditions to sign a contract order, the user must bring the sample to be tested to the manufacturer to do a test, buy the instrument from the manufacturer, the dealer is unable to guarantee after-sales, no after-sales equipment is scrap iron. **is the second place, if the manufacturer is suitable, you can screen a few to talk about**, don't care too much about the money, sometimes saving that thousands of dollars is worth the loss.

Like Karzhei Coulometric Trace Moisture Analyzer, Open Flash Point Meter, Kinematic Viscosity, Demulsification, Mechanical Impurities, Foam Characteristics, etc., try to buy fully automatic or semi-automatic, which can save a lot of labor and ensure the accuracy of the test.

It is recommended to buy manual ones such as freezing point, acid value, oil cleanliness (granularity), copper sheet test, etc., which can save a lot of money and be reliable and durable.

It is up to you to decide on what you can afford to afford and what you need to test. Generally, viscosity, pour point, flash point, acid number, etc. can be bought domestically, and there is no big problem in use. If you use infrared to measure the metal content, it is best to buy imported ones such as fisher's, the quality is more reliable and accurate.

To detect the metal and its content in the lubricating oil, the best one is the mobile oil analyzer of Enos, USA, which meets the ASTM D6481 standard and uses the Windows operating system.

1. Oil sampling method sampling valve sampling.

When sampling lubricating oil, a ball valve can be installed on the low-pressure circuit of the oil running line, and then the oil sample can be obtained by simply opening the ball valve. In the process of sampling the sampling of the sampling valve, it should be noted that the oil should be completely washed through the sampling valve before holding the sample oil, the purpose of which is to remove the impurities at the dead corner of the sampling valve and the residual oil of the last operation to ensure the accuracy of sampling.

2. Oil sampling method: Pressure joint sampling.

The second method of sampling lubricating oil is to take a pressure fitting to take the sample. The English name of the pressure test joint is mininess, which is a special valve mostly used in hydraulic systems, and belongs to the type of needle valve. Once the pressure fitting is installed in the hydraulic system, a fluid sample can be obtained by simply removing the protective cap and opening the valve.

When operating the pressure test fitting, it is also necessary to pay attention to the internal impurity flushing problem.

3. Oil sampling method: sampling pump sampling.

When the lubricating oil analyzer is used to analyze oil tanks, engines and other equipment, the sampling parts are relatively special, so sampling pumps are mostly used for sampling. The operation method of sampling with the sampling pump is to connect the sampling bottle with the sampling pump and screw it tightly, and then the sampling pipe on the sampling pump goes deep into the inside of the oil tank, and after the sampling pump is started, the oil in the oil tank will flow into the sampling bottle under the action of vacuum to complete the sampling.

From the perspective of the product, the main reference is to the parameters of the lubricating oil, color, density, viscosity, lightning, pH, moisture, impurities, wear resistance, etc.

I feel that it is enough to control the dosage, basically add it to the middle of the upper and lower limit of the oil dipstick, and the specific dosage can also refer to the maintenance manual, which is written. In addition, I now use German magic red engine oil, four types of PAO base oil, which is better than the three types of oil I bought before.

Compared with low-grade lubricants, high-grade lubricants have significantly improved oxidation resistance and cleaning and dispersion ability. In addition, the valve mechanism wear protection, oil scale resistance, filter clogging prevention, lubricating oil loss and cryogenic pumpability have been significantly optimized.

Car oil, you just need to buy it in accordance with the recommended model on the car's maintenance manual, there are several major brands on the market The quality is almost the same, as long as the model is right, of course, you have to choose the regular channel of oil, if you buy it from the Internet, it is recommended to buy it from a certain east will be reliable, if you catch up with the double 11 or year-end promotion, ** is also very cheap.

Oil quality analyzer, Shenzhen Yatai Optoelectronics is available.

General physicochemical indicators (e.g. viscosity, pour point, flash point, moisture, etc.).

Performance indicators (oxidation stability, thermal stability, shear stability, etc.).

If you don't know what indicators you want to measure, you need to have a special instrument to test.

Flash point, moisture, viscosity, acid number, demulsification, particle size, liquid phase corrosion, foam characteristics, etc.

Zibo Shengkang Electric is available.

There are a lot of indicators, I don't know what you're talking about, particle counters for cleanliness, chemical methods for water, oxidation, additives, etc.

The detection of lubricating oil is mainly to detect the performance of various indicators of lubricating oil, for the production and sales units, this belongs to the quality inspection index, which directly reflects the production process and research and development capabilities of a unit, and can be improved according to the data obtained from the inspection. The various indicators of lubricating oil testing directly affect the quality of lubricating oil, and then affect the sales market and reputation of the unit.

For the user, the lubricating oil test indicators reflect the performance of the lubricating oil, and the user unit replaces or filters the lubricating oil according to the test indicators to prevent excessive wear or loss of the equipment, prolong the service life of machinery and equipment, and eliminate various potential safety hazards.

Generally speaking, the lubricating oil test items are: water content (trace moisture tester), flash point meter (open flash point tester), kinematic viscosity (kinematic viscosity tester), pouring point (freezing point tester), acid value (automatic acid number tester), density (density tester), mechanical impurities (mechanical impurity tester), ash (ash tester), carbon residue (carbon residue tester), oil cleanliness (particle size counter), copper corrosion (copper test tester), Air release value (air release value tester), oxidation stability (oxidation stability tester). Among them, water content, flash point, kinematic viscosity, freezing point, acid value, ash content, carbon residue, and particle size must be measured.

Lubricating oil storage precautions:

1. Do not put it upright in the open air to prevent the invasion and pollution of water and debris.

2. Indoor storage can be placed vertically, and the barrel side is facing up, which is convenient for extraction.

3. Tighten the sealing cap to keep the oil drum sealed.

4. Keep the barrel surface clean and clearly marked.

5. Keep the ground clean so that it can be found in time when there is an oil leak.

6. Do a good job of warehousing registration, first-come, first-served.

7. Frequently extracted oil products are placed on the oil drum rack and used to control the exile with a switch.

8. The new oil and the waste oil are placed separately, and the container filled with the waste oil cannot be filled with new oil to prevent pollution.

Precautions for the use of lubricating oil:

Before use, the remaining oil, waste oil and sediment in the original machine tool should be thoroughly cleaned to avoid mixing with other oils.

The oil is not suitable for special machine tools with harsh working conditions and high lubrication requirements. For gear transmission devices, hydraulic systems and guide rails that require high quality of oil products, medium and heavy-duty gear oils, anti-wear hydraulic oils or guide rail oils should be selected.

The oil replaces the mechanical oil for the lubrication of the circulating system of general machine tools and other similar equipment, which can extend the oil change interval and save lubrication by 1 3 1 2 on average.