Koehler Instrument K43049 – Foaming Characteristics Apparatus Sequence IV

Test Method

Foaming in lubricating oils occurs in turbulent, high-speed, or high-volume systems and leads to poor lubrication and cavitation. Additionally, foaming causes overflow and accelerates oil oxidation.

• First, heated air is blown through the sample at specified temperatures
• This includes a high-temperature test at 150 °C.
• Next, the system measures foam volume at the end of each aeration period.
• Then, foam volume is measured again at defined intervals after aeration stops.
• Finally, the test records the time required for the foam to collapse to zero.

D892 and D6082 Dual Twin Foaming Characteristics Test Apparatus

• This apparatus performs four tests in accordance with ASTM D892 and ASTM D6082 specifications.
• The heated liquid bath provides digital temperature control up to 150 °C.
• In addition, four flowmeters maintain required airflow rates of 94 and 200 mL/min.

NB: An external chiller is required to perform Sequence I and III tests at 24 °C.

Conforms to the specifications of:

• ASTM D892, D6082; IP 146; DIN 51566; Federal Test Method 791-3211; NF T 60-129

Temperature Control:

• Digital Setpoint and Displays °C/°F switchable
• Built-in Overtemperature Cut-off Protection

Included Accessories:

• Test Cylinders, 1000mL (2)
• Diffuser Stones, calibrated and certified (2)
• Air Delivery Tube Assemblies (2)
• Air Outlet Tube (2)
• Rubber Stoppers (2)
• Bath Jars (1)
• Support Rack (1)