Determination of the evaporation loss of lubricating oils (particularly engine oils).
Procedure A uses the Noack evaporative tester equipment.
Procedure B uses the automated non-Woods metal Noack evaporative apparatus.

Measuring Noack Principle

A quantity of 65 grams of sample is heated to a specific temperature and maintained for 1 hour while it is enclosed in a crucible, the crucible’s cover is shaped to allow a constant vacuum of -2 mbar to remove from the crucible the evaporating portion of the sample.
At the end of the test, the sample is cooled and then reweighted: the difference, reported in percentage, represent the sample’s Evaporation Loss by the Noack Method.
Method A: bath is controlled at 250°C.
Method B: the sample is controlled at 245.2°C.

Measuring Temperature Probe

• Platinum resistance PT100 class A

Measuring Parameters

• Temperatures: in °C
• Testing range: +225°C to +275°C
• Measuring range: 0°C … +320°C
• Resolution: 0.01 °C
• Accuracy: ± 0.1 °C
• Repeatability / Reproducibility: according ASTM D5800 or better

Electronic regulator for automatic control of differential pressure

• Differential pressure 20 mm H20, accuracy 1%

Crucible, Crucible Cover and Heating Block

• Same dimensions and volume as ASTM D5800
• Electrically heated new designed aluminium block, no Woods metal needing

Heating unit

• Electrical resistance, 500 W

Vacuum Pump

• Equipped with high resistant Kalrez valve, inlet filter to remove product residuals
• Automatic electronic control system able to maintain the -2mB during the analysis
• Low voltage power supply

Integrated Touch Screen Panel PC

• TFT/LCD 8”
• Resolution 1024 × 768, 16.2 M colours
• 2 USB ports for connection to an external printer and/or external PC
• Storage capacity for more than 60’000 analysis
• Lin-Tech operating software Lab-Link running in Windows ambient
• Automatic reading of the weight suggested balance LT/B-2470/BCA500 INT- CAL

Dimensions

• Length 400 mm
• Width 450 mm
• Max. height: 450 mm

Weight

• 22 Kg

Ambient Temperature

• Max 35°C
• H.R. 80%