K43002 Foaming Characteristics Apparatus & Data Acquisition Software

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 afterward. In the high temperature test, the amount of time required for the foam to collapse to “0” after the aeration period is also measured.

Features and Benefits

• Dual-twin models for standard foaming characteristics tests

• High temperature liquid baths for ‘Sequence IV’ tests

• Automatic time sequence models for both tests

• Custom configurations for specialized applications

Click on the image to view a larger photo of the instrument.

K43002 Foaming Characteristics 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 overtemperature 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 (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 contact us for specifications and ordering information.

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)

Conforms to the specifications of:
ASTM D892; IP 146; DIN 51566; FTM 791-3211, 791-3213*; NF T 60-129
*Requires modifications to standard equipment.

Air Flow Rate: 94mL/min

Bath Temperature: 24°C (75°F) and 93.5°C (200°F) - Operator Variable

Bath Capacity: 9 gal (38.5L) each bath

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

Electrical Requirements
115V, 50/60Hz, 16A
220-240V, 50/60Hz, 8A

Dimensions lxwxh,in.(cm)
32.25x15x31.25 (82x38x79.4)
Net Weight:
K43002: 108 lbs (49kg)
K43003: 118 lbs (53.5kg)

Shipping Information
Shipping Weight:
K43002: 217 lbs (98.4kg)
K43003: 227 lbs (103kg)
K43002: 29.6 Cu. ft.
K43003: 33 Cu. ft.

K43000-SFW Foaming Characteristics Software
Foaming Characteristics "test intelligent" software simplifies the testing process by providing sequential test prompts for assisting the operator with each step of the test procedure, and provides timing for both the foaming test and foam settling for up to 4 samples simultaneously. The sophisticated Windows®-based software package features an easy-to-navigate operation, a straightforward user interface, minimal draw on Windows® memory resources, automatic real-time data acquisition via RS232 connection, and a timer / stopwatch feature for general laboratory use. The active zoom, pan, and trace feature allows the ability to change axes and the magnification of any graph sector to view data in greater detail. The final test data is exported with graphs and test parameters (user name, sample name, sample ID, test type) either directly to Microsoft® Excel, in ASCII file format for use with LIMS or any other spreadsheet programs, or directly to a printer with a test report according to ISO guidelines. Test data is saved in a database format for determining test averages, standard deviations, and ASTM test repeatability. The software package requires no PC hardware installation and includes the software installation CD and computer connection cables.

Computer Requirements
PC Processor: Intel® Pentium II or similar (minimum)
Processor Speed: 500 MHz or higher
Operating System: Windows ® 98 SE, 2000, NT, ME, XP
Memory (RAM): 64 Mb RAM (128 Mb RAM recommended)
Hard Disk Space: 15 Mb free space (minimum)
Communication Ports: two RS232 ports
Other Software: Microsoft ® Excel (97 or above)

For a complete demonstration of the Foaming Characteristics Software Package and its capabilities, please download a copy of the demo version (7.4MB file). After installing the demo software, you will be prompted to quickly register the demo with Koehler via email.

Click here to download the software demo.

Ordering Information
Product Description Electrical Requirements
K43002 Foaming Characteristics Apparatus, Dual-Twin
115V 50/60Hz
K43092 Foaming Characteristics Apparatus, Dual-Twin
220-240V 50/60Hz
K43003 Foaming Characteristics Apparatus, Automatic Time Sequence
115V 50/60Hz
K43093 Foaming Characteristics Apparatus, Automatic Time Sequence
220-240V 50/60Hz
K43000-SFW Foaming Characteristics Data Acquisition Software

Catalog Number
Product Description
Air Pump, oil-less.
Delivers 100% oil-free air. 115V, 50/60Hz
Air Pump, oil-less.
Delivers 100% oil-free air. 220-240V, 50/60Hz
Wet Test Gas Meter
For volume measurements of air leaving the test cylinders. Note: One meter is required for each test cylinder. Not required for the ‘Alternative Procedure’ - Section 9.1
332-005-005 Drying Tower. 300mm
K43025 Diffuser Stone Test Apparatus
For maximum pore diameter and permeability tests on diffuser stones. Consists of 90cm manometer, 500mL flask, flowmeter, graduate, delivery tube assembly and control valve.
K33031 Refrigerated Recirculator, 115V 60Hz, 8A
Use with foam test baths for 24°C tests (Sequence I and III). Microprocessor based digital control and quiet running compressor provide reliable operation and accurate control within ±0.5C.
K33032  Refrigerated Recirculator, 220-240V 50Hz, 4A
250-000-12F ASTM 12F Thermometer.
Range: –5 to +215°F
250-000-12C ASTM 12C Thermometer.
Range: –20 to +102°C
250-000-41C  ASTM 41C Thermometer.
Range: 98 to 152°C
K23425 Acrylic Heat Shield, with base
For high temperature bath on Dual-Twin Foam Test Apparatus.
344-100-01C  Certified Diffuser Stone.
Calibrated and certified for compliance with ASTM specifications for pore diameter and permeability.
344-100-001 Diffuser Stone, non-calibrated
344-005-001 Stainless Steel ‘Mott’ Diffuser
K43012 Test Cylinder
Replacement 1000mL cylinder. Includes retaining ring.
When inquiring about NIST traceable certified thermometers, please refer to the catalog number for the corresponding thermometer and replace the middle three zeros in the catalog number with 004. Example: 251-000-01C ASTM 1C Thermometer would be 251-004-01C ASTM 1C Certified Thermometer.