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How much is permitted water content in oil?
Setting an alarm level for water in oil is very important for equipment reliability. Establishment of levels, combined with testing at proper intervals, will allow the end user to act quickly if a sudden increment of water is detected. Best practice is to maintain water levels at or below half of the ...
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How is water in oil measured?
Water in oil can be measured in 3 ways: on-site by sampling, in the laboratory and on-line in real time.1. On-site measurement1.1 Crackle Test is the most expedient and economical way to determine water content in oil. Two drops of oil are placed on a hot surface (130℃) and any bubbling or crackling ...
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What type of damage can water do to lubrication system?
The effect of water in oil is twofold, destrolying both the beneficial physical and chemical properties and characteristics of the oil. This can lead to machine component damage.1. Physical effect on oila. Higher viscosityb. Reduced load carrying ability2. Chemical effect on oila. Hydrolysis - formation ...
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How does water exist in oil?
Water in oil can exist in three stages: dissolved, emulsified and free. Below saturation level, the molecules of water are dispersed alongside oil molecules, resulting in water in the oil that is not visible. This is known as dissolved water, the least dangerous water state to a lubrication system.When ...
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Where does water come from in lubrication system?
Water in lubrication systems can originate from the environment, such as rain or moisture in the air. Leakage, damaged gasket on reservoir covers, underperforming air breathers, or a damaged wiper on a hydraulic cylinder are also possible sources. Condensation of air in oil reservoirs due to temperature ...
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How to choose a gas chromatograph 4 --- Other Aspects
1. For one sample, in theory, there are probabaly several analytical methods by various instruments. So you'd better compare their performance-price ratio, operational characteristics, maintenance service. List the reasons why you choose this supplier's GC. 2. Find and consult reference documents regarding ...
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How to choose a gas chromatograph 3 --- Positioning of Purchaser
1. Research institute: high requirements on GC. 2. Monitoring and analysis center: emphasize accuracy and reliability of measurement. 3. Working site front-line analysis: focus on repeatability.
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How to choose a gas chromatograph 2 --- Analysis Purpose
1. Qualitative analysis: is analyzed compound known or unknown, with or without standard substance? 2. Quantitative analysis: constnat, semi-micro, micro, trace, ultra trace. 3. Quantitative precision and analysis accuracy, for example, if it requires semi-quantitative analysis only, it will be much ...
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How to choose a gas chromatograph 1 --- Sample Situation
1. The composition and status of sample. Is the sample gas state, liquid state, solid state or mixed state? Can the sample be analyzed directly by gas chromatography? 2. Is the sample composition thermal-unstable, easy decomposable or easy catalytic reaction? Do time, temperature, pressure etc. cause ...
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How to choose a right transformer oil gas analyzer?
1. QualityA. NoiseIt refers to high frequency noise generated by linear pulses of electrical components, temperature fluctuation, voltage and other non-solubles; it also refers to irregular fluctuation of baseline.Noise is directly related to detection sensitivity of the instrument, the larger the noise, ...
