Overview
HK-0308A Automatic Air Release Value Tester conforms to ASTM D3427 Standard Test Method for Air Release Properties of Petroleum Oils. Agitation of Lubricating oil with air in equipment，such as bearings, couplings, gears， pumps, and oil reture lines， may produce a dispersion of finely divide air bubbles in the oil. If the residence time in the reservoir is too short to allow the aire bubbles to rise to the oil surface, a mixture of air and oil will circulate through the lubricating oil system. This may result in an inability to maintain oil pressure (particularly with centrifugal pumps), imcomplete oil films in bearings and gears, and poor hydraulic system performance or failure.
This test method measures the time of the entrained air content to fall to the relatively low value of 0.2% volume under a standardized set of test conditions and hence permits the comparison of the ability of oils to separate entrained air under conditions where a separation time is available. The significance of this test method has not been fully established. However, entrained air can cause sponginess and lack of sensitivity of the control of turbin and hydraulic systems. This test may not be suitable for ranking oils in applications where residence times are short and gas contents are high.
Features
Touch screen operation, connect the balance to display the quality of the standard glass column, and automatically convert the density
The instrument automatically timed, switched inflation, calculated the end result, stored, transmitted
Built-in air heater, safe and fast
Built-in circulating water, automatic heating and constant temperature
Technical parameters
Rated voltage：AC 220V±10% 50Hz
Power：700W
Operation mode：Touch screen
Temperature range：Ambient～100℃
Temperature accuracy：±0.1℃
Temperature sensor：Pt100（platinum resistance）
Circulating mode：High temperature pump circulation
Ambient requirements：Temperature 5～40℃；Humidity≤85%
