The Rolling Thin Film Oven (RTFO) test is used to measure the effect of heat and air on a moving film of semi-solid asphalt binder. The results of this treatment are determined from measurements of the binder properties before and after the test.
Repeatability of the test is directly related to the accuracy with which the oven temperature can be maintained and the reproducibility of the thermal rise time of the system. The invention of RTFO by James Cox & Sons led to the present day AASHTO, ASTM and EN standards for Rolling Thin Film Oven test (RTFOT).
Key features
- Invented, designed and manufactured in California
- Super accurate P.I.D. controller
- Low thermal mass RTD
- Over temperature safety cut-out
- Double walled temperature cabinet
- Unique temperature control suppression
- Made in California
Specification
|
Construction |
Double-walled construction |
|
Insulation mm (inch) |
89 mm (3.5) of high density fiberglass insulation |
|
Controller |
Programmable microprocessor UL listed |
|
Temperature Display |
Measured Temperature – 4 digit red LEDs |
|
Thermal Protection |
Prevents oven from overheating in the event of control failure |
|
Temperature Range |
Ambient to 200°C (390°F) |
|
Vents |
Double exhaust vents for dissipation of expended volatile from specimen |
|
Air Flow Adjustment |
Needle valve (long taper) |
|
Air Pressure Gauge |
Range 0 – 100 psi |
|
Heat Exchanger |
5/16 inch diamete copper tube |
|
Electrical Supply |
CS0325-1060: 1 Ph 208-230 V 60 Hz |
|
Dimensions (WxDxH) mm (inch) |
1016 x 660 x 915 (40 x 26 x 36) |
|
Estimated Weight Kg (lbs) |
173 (380) |