BIBX3RZ4
Brand: Koehler Instruments
Category: Lubricating greases
Industry: Material Science & Chemistry, Petroleum & Petrochemicals
The Foaming Characteristics Test Baths are precision-engineered systems designed to evaluate the foaming tendency and stability of lubricating oils under controlled aeration and temperature conditions.
These baths conform to ASTM D892, ASTM D6082, and related international standards, making them indispensable for determining foam formation, stability, and dissipation characteristics of oils used in engines, turbines, and hydraulic systems.
Foaming in lubricating oils during high-speed operation or turbulence can lead to cavitation, poor lubrication, and premature oxidation.
The Foaming Characteristics Test Baths simulate real-world conditions by blowing a controlled volume of air through the oil sample at specified temperatures — including a high-temperature Sequence IV test at 150°C — and then measuring foam volume after each aeration cycle and subsequent collapse.
The system includes dual-twin constant temperature baths and high-temperature test configurations, offering complete compliance with ASTM D892 (standard foaming test) and ASTM D6082 (Sequence IV test).
Microprocessor-based PID controllers ensure rapid temperature stabilization without overshoot, while digital dual LED displays provide both setpoint and actual temperature values in °C/°F.
Each bath is equipped with certified diffuser stones, precision air flowmeters, and safety shields for operator protection.
The modular design enables simultaneous testing at low (24°C), medium (93.5°C), and high (150°C) temperatures.
Conforms to ASTM D892, ASTM D6082, IP 146, DIN 51566, and FTM 791-3213
Dual-twin bath configuration allows simultaneous testing at multiple temperatures
Digital PID temperature control with ±0.5°C precision and built-in over-temperature protection
Automatic time-sequence operation for both standard and high-temperature foaming tests
Certified diffuser stones and calibrated air delivery systems for accurate airflow
Quick-lock cam system ensures secure test cylinder positioning
Acrylic safety shield and support racks enhance safety and convenience
Optional communication software (RS232) and ramp-to-set control
Available in special configuration for aircraft lubricant testing (FTM 791-3213)
Prevent foam — preserve performance.
The Foaming Characteristics Test Baths deliver precise, repeatable measurement of foam formation and stability in lubricants.
With microprocessor temperature control, dual-bath capability, and ASTM-compliant construction, this system ensures accurate, real-world simulation of lubricant aeration behavior — safeguarding equipment performance and lubricant integrity.
| Parameter | Specification |
|---|---|
| Conforms to Standards | ASTM D892, ASTM D6082, IP 146, DIN 51566, FTM 791-3211/3213, NF T60-129 |
| Temperature Control Type | Digital PID Controller with Dual LED Display |
| Temperature Range | 24°C, 93.5°C, and 150°C |
| Temperature Stability | ±1°F (±0.5°C) |
| Air Flow Rate (Standard Test) | 94 mL/min |
| Air Flow Rate (Sequence IV) | 200 mL/min |
| Test Cylinder Capacity | 1000 mL (Borosilicate Glass) |
| Bath Configuration | Dual-Twin Baths (Low & High Temp) + Optional Sequence IV High Temp Bath |
| Over-Temperature Protection | Built-in Automatic Cut-Off |
| Display Units | °C/°F Switchable |
| Control Accuracy | Microprocessor Controlled |
| Heating Element | Quick Response Copper Immersion Heaters |
| Circulation System | 1/20 hp Stirrer for Uniform Bath Temperature |
| Communication Interface | Optional RS232 Port |
| Parameter | Specification |
|---|---|
| Bath Dimensions (Each) | 12 × 18 in (30.5 × 45.7 cm) |
| Overall Height | 20 in (50.8 cm) |
| Net Weight (Dual Bath) | 75 lb (34 kg) |
| Shipping Weight | 90 lb (41 kg) |
Evaluation of foam tendency and stability of lubricating oils
Testing engine, gear, turbine, and hydraulic lubricants
Assessment of air entrainment and collapse time under thermal stress
Specialized testing of aviation turbine oils (FTM 791-3213)
Quality control and R&D laboratories in lubricant formulation
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