- General Details
MiniTest FFK Grease Analyzer automatically determines the flow-pressure properties of lubricating grease at low temperatures down to -50°C by means of the Kesternich test (DIN 51805). The original and time-consuming method is fully automated and the measuring range is extended far below the original one, resulting in a considerably improved test precision.
A powerful two stage Peltier element avoids the use of a large and expensive cryostat. The principle of the test is based upon the pressure build-up to press an amount of grease through a standard test nozzle at a preset temperature.
The original manual and time-consuming method is fully automated in MiniTest FFK Grease Analyzer. The measuring range is extended far below the original test method. Temperature control is performed with Peltier elements which eliminate the use of a large and expensive cryostat. No further accessories are necessary.
A layer of the grease to be tested is put on a glass plate without air bubbles. The measuring nozzle is simple pressed a few times onto the layer of lubrication grease until it is filled with grease. The nozzle is then inserted into the thermostatically controlled metal block of the tester and the chamber is air sealed.
The test temperature and the equilibrium time are programmed. Further the expected flow pressure and the pressure increase for each step. For high flow pressures, a starting pressure above barometric pressure can be set to accelerate the measuring time.
The test temperature, equilibrium time, expected flow pressure and the pressure increase for each step are programmed. For high flow pressures, a starting pressure above barometric pressure can be set to accelerate the measuring time. The grease tester performs tests fully automatically. When the test temperature is reached, the equilibrium time of up to two hours is started. After the equilibrium time, the pressure above the sample nozzle is increased in steps until a sudden pressure decrease is observed, indicating that the grease is pressed through the nozzle. The test is stopped and the last pressure value is displayed as the flow pressure according to Kesternich.
Flow-properties of lubrication grease at low temperature is a measure of great significance for central lubrication systems of vehicles and machineries. This property can best be measured according the method of Kesternich.
This test method is suitable for temperatures at which no grease leaks out of the test nozzle.
MiniTest FFK Grease Analyzer is an instrument for the determination of the flow pressure of lubricating greases at temperatures down to -50°C (- 58°F).
- Technical InfoTemperature Range
-50 to +30°CTemperature Resolution +/- 0.1°CPressure Range 0 to 300 kPaPressure Resolution +/- 0.1 kPaLanguage English/GermanPower Requirements 100 – 240 VAC, 50 Hz, 200WField Application 12 V/10A DC (vehicle battery)Dimensions (W x H x D) 196 x 315 x 175 mmWeight 10 Kg
- DIN 51805
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