Aparat test oxidare RPVOT (RBOT)

The RPVOT (RBOT) procedure employs severe oxidation conditions to rapidly determine oxidation stability.

  • 2, 3 and 4-unit systems
  • Oxidata® Pressure Measurement System
  • Conforms to ASTM D2112, D2272 and IP 229 specifications for RPVOT (RBOT) testing
  • Conforms to ASTM D4742 specifications for TFOUT testing

 Suitable for both new and in-service oils, the RPVOT (RBOT) method is applicable to many types of petroleum oils. A variation of the RPVOT (RBOT) method is the “Thin Film Oxidation Uptake Test” (TFOUT) for gasoline automotive engine oils

Producător: Koehler

Cod: K70300

Preţ, fără TVA: La cerere


Telefon: 0744.594.794 / 0251.417.664


Constant temperature bath rotates oxidation pressure vessels at 100rpm at an angle of 30° in accordance with ASTM specifications. Includes drive system and oil bath with electronic solid state temperature control. Meets ASTM requirements for heat transfer capability and temperature control precision. A convenient carriage arrangement allows the oxidation vessels to be inserted quickly and securely in the drive system. A strong magnet holds the vessel in place while locating pins in the carriage engage the base of the vessel. PTFE guides support the pressure vessel stem for added stability. If the vessel becomes obstructed for any reason, the magnetic carriage releases it to prevent damage. A chain and sprocket drive system powered by a heavy duty capacitor start motor rotates the vessel carriages at 100rpm. Drive shafts ride on PTFE fluorocarbon bearings which provide extended service and are compatible with silicone heat transfer fluids and other types of bath oils. Bath temperature is controlled within ASTM specified limits by an electronic solid state controller with °C/°F switchable digital setpoint and display. Overtemperature protection is provided by a built-in limit control that automatically interrupts power to the bath when bath liquid temperature exceeds 16.7°C (30°F) above the temperature setting or 177°C (350°F). Power must then be manually restored by the operator after checking the cause of the problem. Pressure vessel carriage vanes circulate the bath oil during testing to ensure temperature uniformity, and an auxiliary stirrer can be operated between tests to prevent sludging of non-silicone bath oils. The bath interior is constructed of welded stainless steel and is fully insulated. 

A hinged section of the bath cover provides easy access to the vessel carriages. Vapor barriers in the cover close around the vessel stems to contain vapors from the hot bath medium. A chemical resistant polyurethane finish protects the bath exterior and control cabinet. Oxidation Pressure Vessel Consists of pressure vessel body, cap and stem with inlet needle valve in accordance with ASTM specifications. Vessel holds one borosilicate glass sample container between two PTFE discs. Closure ring tightens by hand to seal cap to pressure vessel body. Vessel connects to pressure recorder or rotary transducer and rotates on magnetic carriage in RBOT bath. Withstands working pressure of 500psi (3450kPa) per ASTM specifications. Stainless steel construction ensures proper rate of heat transfer. Closure ring is constructed of chrome plated steel. Includes PTFE fluorocarbon wear disc and sample container cover disc. Oxidata® Pressure Measurement Systems  Electronic pressure measurement systems exclusively designed for RPVOT (RBOT), TFOUT and other ASTM oxidation test methods Powerful Oxidata software for Windowsenvironments Monitors up to twelve pressure and four temperature channels  Can be installed to most manufacturer’s RPVOT(RBOT)/TFOUT test apparatus Complete electronic measurement systems for plotting pressure versus time and temperature in RPVOT (RBOT) and TFOUT testing. Each system includes transducers, pressure vessel couplings, RTD probe assembly, multiplexer, data acquisition card, software, and mounting and connecting hardware. Systems are available in two, three and four pressure vessel configurations, and additional channels can be added for up to a total of twelve pressure. 

Conforms to the specifications of:

ASTM D2112, D2272, D4742; IP 229


2, 3 or 4 oxidation pressure vessels

Temperature Control:

Maximum Temperature: 200°C (392°F)
Control Stability: ±0.02°C (±0.04°F)

Heater Range:

2 and 3-pressure vessel models: 0-2750W
4-pressure vessel models: 0-3750W

Recommended Bath Medium:

 high temperature silicone heat transfer fluid 

Drive System: 

100rpm positive drive transmission powered by a continuous duty 1⁄2hp ball bearing motor with built-in gear reducer

Bath Capacity:

K70200/K70290 18gal (68L)
K70300/ K70390 25gal (95L)
K70400/ K70490 32gal (121L)


K70200/K70290 2 oxidation vessels
K70300/ K70390 3 oxidation vessels
K70400/ K70490 4 oxidation vessels


K70200/ K70290: 28x26x33 (71x66x84)
K70300/ K70390: 37x26x33 (94x66x84)
K70400/ K70490: 46x26x33 (117x66x84)

Net Weight:

K70200/ K70290: 237 lbs (107.5kg)
K70300/ K70390: 284 lbs (129kg)
K70400/ K70490: 375 lbs (170kg)

Denumire accesoriu


Oxidation Pressure Vessel


Aluminum Insert - Converts standard K70000 Oxidation Pressure Vessel for use in the TFOUT method


RBOT/TFOUT Oxidata Pressure Measurement System

  • Two-Unit System, 115V 60Hz
  • Two-Unit System, 220-240V 50/60Hz
  • Three-Unit System, 115V 60Hz
  • Three-Unit System, 220-240V 50/60Hz
  • Four-Unit System, 115V 60Hz
  • Four-Unit System, 220-240V 50/60Hz









Sample Beakers

  • RPVOT (RBOT) Sample Beaker Borosilicate glass, 175mL. Meets ASTM D2112, D2272 specifications
  • TFOUT Sample Container Borosilicate glass. Meets ASTM D4742 specifications





Oxygen Charging Accessories

  • Charging Hose. 6 ft (1.8m), with connections
  • Female Quick Disconnect Coupling, for charging hose
  • 1 Male Quick Disconnect Coupling, 1⁄4" NPT, for oxidation pressure vessel
  • Oxygen Pressure Regulator






Oxidation Pressure Vessel Accessories

  • Silicone O-ring - Replacement seal for pressure vessel lid-body connection
  • Sample Beaker Cover (PTFE disk)
  • TFOUT Sample Beaker Cover (PTFE disk)
  • Spring. Inserts in pressure vessel to hold RPVOT (RBOT) beaker and cover in place
  • Spring. Inserts in pressure vessel to hold TFOUT container and cover in place








Copper Catalyst for RPVOT (RBOT) Method

  • Copper Catalyst Coil Prepared in accordance with ASTM specifications and packed in a sealed glass container with nitrogen atmosphere. Ready to use.
  • Copper Catalyst Wire - 1.63mm electrolytic copper wire in 500 ft (152m) lengths.
  • Winding Mandrel - Machined aluminum mandrel for winding copper wire into coils meeting ASTM specifications. Mounts on K70003/K70004 Drive Unit
  • Drive Unit for Winding Mandrel - Slow speed gear motor mounted on a sturdy base. Facilitates coil winding procedure. 115V
  • Drive Unit for Winding Mandrel - Similar to K70003 but for operation on 220-240V














  • Conforms to ASTM D2112, D2272 and IP 229 specifications for RPVOT (RBOT) testing
  • Conforms to ASTM D4742 specifications for TFOUT testing
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