Sequence IV Liquid Foaming Characteristics Apparatus
Test Method
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, including a
newer high temperature test at 150°C. The resultant foam is measured at
the end of each aeration period and at different intervals afterwards. In the
high temperature test, the amount of time required for the foam to collapse
to "0" after the aeration period is also measured.
Foaming Characteristics Test Baths
. Dual-twin models for standard foaming characteristics tests
. High temperature liquid bath for 'Sequence IV' tests
. Automatic time sequence models for both tests
. Custom configurations for specialized applications
Dual Twin Foaming Characteristics Test Apparatus
Performs two
tests at 75°F (24°C) and two tests at 200°F (93.5°C). Consists of two 12x18"
(30.5x45.7cm) constant temperature baths with 1000mL test cylinders, certified
diffusers, air delivery tubes, and flowmeters (94mL/min.) for each sample.
Baths are equipped with microprocessor temperature controls, copper
immersion heaters and 1/20hp circulation stirrers to maintain temperature
uniformity of ±1°F (±0.5°C). Microprocessor PID control provides quick
temperature stabilization without overshoot and the bath is protected by an
over temperature control circuit that interrupts power should bath temperature
exceed a programmed cut-off point. Dual LED displays provide actual and
setpoint temperature values in °C/°F format. Test cylinders are held securely in
place by quick-locking cams in the bath cover assembly. A separate stainless
steel support rack is provided to hold the test cylinders after removal from the
bath. Cold bath (24°C) has built-in coils for circulating exit air from the high
temperature test cylinders prior to passing to a volume meter, and a separate
coil for circulating cooling water or refrigerant when the ambient temperature
exceeds the test temperature. Supplied with rubber stoppers and glass air
outlet tubes for each cylinder. Bath controls are enclosed in a finished steel
base with chemical resistant polyurethane enamel finish. Communications
software as seen on page 110 (RS232, etc.), ramp-to-set and other
enhanced features are available as extra cost options. Contact your Koehler
representative for information.
FTM 791-3213 Aircraft Lubricants Test
Employs more severe conditions
-smaller sample, increased air flow, longer aeration period-to test the
foaming characteristics of aircraft-turbine lubricants. All models are available
on special order for FTM 791-3213 testing. Please call or write for specifications
and ordering information.
Specifications
Conforms to the specifications of : ASTM D892; IP 146; DIN 51566;
FTM 791-3211, 791-3213*; NF T60-129
Temperature Control:
Digital Setpoint and Displays °C/°F
switchable ,
Built-in Over temperature Cut-off
Protection
Included Accessories
Test Cylinders, 1000mL (4)
Diffuser Stones, calibrated and
certified (4)
Air Delivery Tube Assemblies (4)
Air Outlet Tubes (4)
Rubber Stoppers (4)
Bath Jars (2)
Support Rack (1)
Acrylic Safety Shield, 18"
High Temperature 'Sequence IV' Liquid Foam Test Bath For two tests
at 150°C with a flow rate of 200mL/min. in accordance with ASTM D6082
specifications. Consists of a constant temperature bath with 1000mL test
cylinders, certified diffusers, air delivery tubes and flow-meters.
Microprocessor PID control provides quick temperature stabilization without
overshoot and the bath is protected by an over temperature control circuit that
interrupts power should bath temperature exceed a programmed cut-off point.
Dual LED displays provide actual and setpoint temperature values in °C/°F
format. Quick response copper immersion heaters provide efficient high
temperature operation, and a stirrer unit provides complete circulation for
temperature uniformity of better than ±1°F (±0.5°C). Locking cams hold the
test cylinders in a vertical position, and a separate rack is provided to hold the
cylinders after removal from the bath. For operator safety, an acrylic heat shield
surrounds the Borosilicate Glass bath jar. Communications software (RS232,
etc.), ramp-to-set and other enhanced features are available as extra cost
options. Contact your Koehler representative for information.
Specifications
Conforms to the specifications of : ASTM D6082
Temperature Control:
Digital Setpoint and Displays °C/°F switchable ,
Built-in Over temperature Cut-off Protection
Included Accessories
Test Cylinders, 1000mL (2)
Diffuser Stones, calibrated and certified (2)
Air Delivery Tube Assemblies (2)
Air Outlet Tube (2)
Bath Jar (1)
Support Rack (1)
Rubber Stoppers (2)
Acrylic Safety Shield, 18"
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