foam bath
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Foaming of lubricating oils in applications involving turbulence, high speed gearing or high volume pumping can cause inadequate lubrication, cavitation, overflow and premature oxidation. The sample is blown with a controlled volume of air at different specified temperatures. The resultant foam is measured at the end of each aeration period and at different intervals afterward. Rectangular single / double foam test model with double walled construction with toughened glass observation window(75W x 385H mm) suitable for 1, 2 3 sequence. Illumination at rear. Stirrer, heater and cooling coil installed in each bath. This method consist of single / two test bath large enough to permit immersion of 1000ml graduated cylinder. Digital temperature controller with PT-100 sensor. The gas diffuser is of 1″ dia spherical made up to crystalline alumina grain. Air flow meter with needle valve to maintain an airflow rate of 94 ± 5ml/min through the gas diffuser stone. Diffuser arrangement consists of diffuser stone, air tube and gasket. Electric air compressor diaphragm type.