Evaluates oxidation stability by subjecting the sample to a temperature of
95°C in the presence of oxygen or dry air. For inhibited mineral oils, the
sample is reacted with oxygen in the presence of water and an iron-copper
Features and Benefits
• Conforming to ASTM and related test method specifications
• Convenient operation and servicing of thirty or sixty test cells
• Complete bath temperature, water level, air flow and condenser water
K12330 Oxidation Stability Apparatus, 30- & 60-Unit
Constant temperature water baths for high volume oxidation stability
applications. Provides temperature control, metered air flow and condenser
water supply controls for as many as thirty or sixty cells in a single
system, eliminating the need for multiple water and electrical feeds and
oxygen supply tanks. Microprocessor PID control provides quick temperature
stabilization without overshoot, and the bath is protected by a redundant
overtemperature control circuit that interrupts power should bath temperature
exceed a programmed cut-off point. Display provides actual setpoint
temperature values in °C/°F format. Communications software (RS232, etc.),
ramp-to-set and other enhanced features are available as extra cost options.
A 6 or 12kW heat exchanger with heavy duty magnetic drive circulation pump
provides rapid and uniform heat transfer throughout the bath. Bath liquid
depth is automatically maintained within ASTM specified tolerances by an
electronic water level control system. Two banks of individually controlled
flowmeters maintain the required oxygen flow rate to each test cell, and
condenser water control valves for each cell are mounted on manifolds along
the sides of the bath. A centrally mounted trough collects condenser waste
water for convenient disposal or recirculation through an external cooling
device. Bath interior is constructed of heavy gauge welded stainless steel.
All components are easily accessible for servicing if required. Supplied with
a sturdy finished angle-iron frame for floor standing installation. Order
oxidation cell glassware and accessories separately.
Conforms to the specifications of: ASTM D943, D2274, D2893*, D4310, D6158;
ISO 4263, 12205; AOCS CD12-57*; DIN 51586, DIN 51587; NF M 07-047; NF T
*Modified versions of this equipment are available for ASTM D2893
“Oxidation Characteristics of Extreme Pressure Lubricating Oils” and AOCS
CD12-57 “Fat Stability Active Oxygen Method.’’ Information will be furnished
Temperature Control Stability: ±0.1°C (±0.2°F)
Oxygen Flow Rate: 3L/h to each test cell, individually controlled
30-place model: 60 gal (227L)
60-place model: 114 gal (432L)
Available option for 30- and 60-place Oxidation Baths–temperature/pressure
recorder with built-in alarms for low pressure and over/under temperature.
Please contact Koehler for specifications and ordering information.
30-place model: 220-240V, 50/60Hz, Single Phase, 28A
60-place model: 220-240V, 50/60Hz, Single Phase, 54A
Other electrical configurations are available upon request.
30-place model: 43x55x52 (109x140x132)
60-place model: 43x78x52 (109x198x132)
30-place model: 892 Ibs (404.6kg)
60-place model: 995 lbs (451.3kg)
30-place model: 94 Cu.ft.
60-place model: 148 Cu.ft.