Controls Group Rolling thin film ovens (RTFOT) Rolling thin film ovens (RTFOT)

Rolling thin film ovens (RTFOT)

Determination of the resistance to hardening under the influence of heat and air

  • Download:
EN 12607-1 | ASTM D2872 | AASHTO T240
Main features
  • Touch-screen display with 4.5” color control panel, including timer function, visual warnings and digital air flow regulator
  • Full conformity to temperature specifications (time to reach target temperature after switch on, target temperature adjustment after samples insertion) from the Standards
  • Carousel rotation with closed-loop controlled speed
  • Safety features: Automatic over-temperature switch, door switch, pilot lamp and alarm for door open with fan still running; magnetothermic switch
  • High quality stainless steel structure, internal and external
  • Door with double-glazed window
  • Door locking system allowing easy opening also with busy hands
General description
General description
These ovens are used for measuring the effect of heat and air on a moving film of semi-solid bituminous materials. The internal chamber is made from stainless steel, insulated with fiberglass or similar, with an external frame made from engine-turned stainless steel and a door with a centrally located window.
Special attention has been given to the safety features which conform to CE requirements. 
The oven is supplied complete with flow meter, ASTM 13C thermometer and 8 heat resistant glass containers (64 m high x 140 mm diameter).
The oven must be connected to a compressed air source supplying 2 bar minimum presure. If not available in the laboratory we recommend to order Diphgram pump (see accessories).
Two versions are available:
  • 81-PV1612 conforming to ASTM/AASHTO standards
  • 81-PV1622 conforming to EN standard
The ASTM and EN versions are basically identical, except for a small difference of the internal dimensions of the testing chamber.
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Technical specifications

Power: 3000 W
External dimensions: 750 x 750 x 900 mm (w x d x h)
Weight: approx. 50 kg

Ordering info

ASTM/AASHTO versions
RTFOT, Bitumen oven for rolling-thin film oven test. ASTM version. 230 V, 50 Hz, 1 ph

As above but 220 V, 60 Hz, 1 ph

As above but 110 V, 60 Hz, 1 ph

EN version
RTFOT, Bitumen oven for rolling-thin film oven test. EN version. 230 V, 50 Hz, 1 ph


Diaphragm pump

Diaphragm pump
Free air displacement, 6 litres/min at maximum pressure of 2.4 bar (when used as an air compressor).
Power: 65 W
Weight: approx. 1.9 kg
230 V, 50 Hz, 1 ph


Scraper for RTFOT bottle.

Metal rack for holding/cooling RTFOT bottles.

RTFOT bottle tong.


Spare glass container.

ASTM 13C thermometer, +155 to +170°C, 0.5° divisions.


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