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Foaming Characteristics Tester for Petroleum Products

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Foaming Characteristics Tester for Petroleum Products

The Foaming Characteristics Tester is used for lubricating oil and other equipment. It can accurately determine the foam tendency and stability of petroleum products.

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Model:
GD-12579
Brand:
GOLD

Product Description

Foaming Characteristics Tester

This foaming characteristics tester is designed and manufactured according to the requirements of the People's Republic of China standard GB/T 12579 Determination of foam Characteristics of Lubricating Oils. It is suitable for determining the foam property of lubricating oils according to the test method specified in GB/T 12579 to evaluate the tendency of lubricating oils to form foam and the stability of foam.

Instrument characteristics:

(1) Foaming Characteristics Tester is composed of two sections: low temperature tempering section and its controlling section, and high temperature tempering section and its controlling section.

(2) The low temperature tempering section is equipped with a portable refrigeration device.

(3) The instrument will enter into constant temperature state automatically after setting the controlling temperature, it is not necessary to modify the set value. By the way, the temperature controller has the function of parameter modification. If there is any difference between temperature shown on the temperature controller and measured temperature on the thermometer, you can modify it.

(4) The Foaming Characteristics Tester also has the function of alarm. When the temperature reaches to the temperature controlling point, you can turn on the time switch, and then the timer will time automatically and the pump will blow at the same time. It will stop blowing after 5 minutes. Stand it for 10 minutes, and the instrument will make an alarm after 10 minutes.

Main technical specification and parameters:

Power supply	AC 220 V±10%, 50 Hz
Main heating power	650 W
Auxiliary heating power	1000 W
Refrigeration power	500 W
Flow rate of air	94±5 ml/min, adjustable
Temperature controlling range	room temperature～99.9 ℃ (high temperature bath)
Temperature controlling range	5～99.9 ℃ (low temperature bath)
Temperature controlling accuracy	±0.5 ℃
Timer	5 minutes and 10 minutes, nearest to second
Timing accuracy	0.01%+0.05 s (at 20 ℃)
Ambient temperature	-10℃～+40 ℃
Relative humidity	≤85%
Total power consumption	not more than 3000 W

Detail Images:

Lubricant Amine Foaming Tendency Testing Equipment

Lubricating Oils Foaming Characteristic Tester

Causes of foam in Lubricating Oil:

At normal pressure, mineral oil can dissolve about 9% of air. The amount of air dissolved in lubricating oil is mainly affected by temperature and pressure. When temperature and pressure change rapidly, air will separate from the oil to reach a new equilibrium.
When the separated air is surrounded by oil film and the oil film is not easy to break, foam will be formed. The foam produced in the lubricating oil of internal combustion engine is partly caused by this condition. Another source of generating bubbles is the mechanical stirring effect when lubricating oil comes into contact with air.
During the operation of the lubrication system, due to intense stirring and splashing, air is stirred into the oil to produce foam. When the oil contains detergents, extreme pressure additives and other surfactants, it is easy to produce foam that is difficult to disappear.
During the use of lubricating oil, some gum, asphaltene, and sludge residue generated due to oxidation and decomposition can promote an increase in foaming. Due to the aging and deterioration of oil products during use, the surface tension of oil products will decrease, which will also promote the production of foam.

Hazards of foam generated by lubricating oil:

A large amount of stable foam will increase the volume, causing the overflow of lubricating oil from the breathing hole and oil injection pipe, causing oil loss or fire and other unsafe factors;
Increasing the compressibility of lubricating oil can lead to a decrease in oil pump efficiency, resulting in abnormal oil supply or air resistance in the oil supply system. For example, hydraulic oil transfers work by static pressure. Once foam is generated in the oil, the oil pressure in the system will be reduced, thus destroying the function of transferring work in the system.
Increase the contact area between lubricating oil and air to accelerate the oxidation, deterioration, and aging of oil products. This problem is particularly serious for air compressor oil.
If used in a hydraulic press, it will cause unstable pressure in the hydraulic system, reduce cooling capacity, affect power, decrease surface tension of lubricating oil, prevent the formation of an oil film on the extreme pressure contact surface of the equipment, cause pitting corrosion on the gear surface, and severe poor lubrication can lead to fracture. When lubricating oil with bubbles is compressed, once the bubbles burst under high pressure, the energy generated will impact the metal surface, causing pitting corrosion on the metal surface. Some internal combustion engine oil bearings may experience this pitting phenomenon.