K27100 Ramsbottom Carbon Residue Apparatus


Test Method
Determines the ‘carbon residue’ left after evaporation and pyrolysis of a sample oil in the Ramsbottom furnace, providing an indication of the deposit forming tendencies of fuels and guidelines for the processing of refinery products.

Features and Benefits
• Conforms to ASTM D524 and related specifications

• Microprocessor temperature control with digital display and over-temperature cut-off


K27100 Ramsbottom Carbon Residue Apparatus
Thermostatically controlled coking furnace for five samples. Cast-iron block type furnace reaches the standard test temperature of 550C (1022F) rapidly and controls with 1C stability. Microprocessor temperature control has C/F switchable digital setpoint and display. Operator and equipment are protected by an over-temperature control circuit which automatically interrupts power to the unit should block temperature exceed the programmed cut-off point. Heavily insulated stainless steel cabinet with three-layer refractory top provides excellent heat retention.

Communications software (RS232, etc.), ramp-to-set and other enhanced features are available as extra cost options. Contact your Koehler representative for information.

Conforms to the specifications of: ASTM D524, D6074; IP 14; ISO 4262; FTM 791-5002

Furnace Type: Cast iron block

Capacity: 5 coking bulbs

Maximum Temperature: 650C (1200F)

Controller Sensitivity: 1C ( 2F)

Heater: 0-2400W, ceramic band heater

Electrical Requirements
115V, 50/60Hz, Single Phase, 20.8A
220-240V, 50/60Hz, Single Phase, 10.9A

Dimensions Ixwxh,in.(cm)
16x21.5x14.5 (41x55x37)
Net Weight: 63 lbs (28.6kg)

Shipping Information
Shipping Weight: 73 lbs (33.1kg)
Dimensions: 8.2 Cu. ft.

Ordering Information



Product Description

Electrical Requirements


Ramsbottom Carbon Residue Apparatus

115V, 50/60Hz


Ramsbottom Carbon Residue Apparatus

220-240V, 50/60Hz




Product Description


Coking Bulb
Pyrex™, with capillary
Conforms to ASTM D524 specifications


Sample Charging Syringe


Needle, 18 gauge, 2"


Coking Bulb Filling Device
Convenient time saving device fills up to five coking bulbs at a time. Ideal for viscous fluids that are difficult to handle at room temperature.


Control Bulb
Stainless steel, with IC thermocouple.
May be used with a thermocouple pyrometer* to verify compliance of the furnace with ASTM performance requirements.


Digital Thermometer, 115V


Digital Thermometer, 220-240V
*The K29310 Digital Thermometer is suitable for this purpose.