3160 - PETRI DISHES - 150 X 20 MM SIZE

ROLLING THIN FILM OVEN

Model Number : EIE-107-RT

As per ASTM D2872, AASHTO T240, CNR N.54, EN 12607-1, IS 15799-2008

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Complies with following International Standards:

ASTM D2872; AASHTO T240 ; CNR N.54; EN 12607 - 1, IS 15799-2008


Application:

Determination of the resistance of bituminous binder to hardening under the influence of heat and air : Rolling Thin Film Oven Test


Introduction:

This unit simulates the hardening that affects binder during its mixture with aggregates in the plant and during the finishing & rolling of the bituminous layers (Short Term Ageing ). Provides the binder sample ready for change in mass determination and for other tests that characterize the binder about the resistance to short term ageing.


Salient Features:

  1. Double walled electrically heated conventional type oven with high glass wool density insulation to prevent thermal loss
  2. Over temperature automatic switch;
  3. Automatic switch that switches off the oven in case of accidental opening of the door during the test;
  4. Spy lamp and alarm for door open with fan still running
  5. Magnetothermic switch.
  6. Double walled, inner chamber S.S.304, Outer CRC Powder coated.
  7. Thermal insulation with high quality material.
  8. Door with high resistance glass separated by an air space offering uninterrupted view of inside of the oven
  9. Armored heating resistance to safety requirement.
  10. Flow meter (Rota meter), with air flow regulator
  11. Transmission of movement of the vertical carriage and of the squirrel cage - type fan by toothed belt, to grant constant speed.
  12. Digital electronic thermo regulator operating in PID mode. By this way it is assured that the test temperature recovery time is complying with the specifications, that is 10 minutes after 1 minute with door open (estimated time necessary for the  positioning of the glass containers with sample into the vertical carriage).
  13. Cooling fan operating all over the test to protect the movement transmission of the squirrel cage fan and of the vertical carriage
  14. Rotating shelf constructed such that it offers minimum resistance to air circulation for better heat distribution while sample container are in place
  15. Complete with pilot indicating lamps, 2 meter cord wire and power plug.



Details of Apparatus:

The entire test method comprises one each of Hot Air oven, Rotating Shelf (Vertical circular carriage), Sample Containers and Thermometer as per following descriptions.


Rotating Shelf:

  1. Single metal Vertical circular carriage having diameter of 304.8mm as per ASTM D2872
  2. Shelf construction is such that it provides a flat surface for support of the containers without blocking air circulation through the shelf when the containers are in place.
  3. Shelf is suspended by a Horizontal shaft and centered with respect to the vertical interior dimensions of the oven
  4. Shelf is rotated by electric motor at a speed of 15 ± 0.2 RPM as per ASTM D2872
  5. Can accommodate four (8) no glass sample containers


Sample Containers:

  1. Inside Diameter : 64 mm ± 1.2 mm
  2. Depth : 139.7 mm
  3. Flat bottom design
  4. Made of clear, transparent, heat resistant glass material


Thermometer:

  1. ASTM 13C thermometer (At extra cost)
  2. Supplied with calibration traceability to National Standards as per - IEC/ISO 17025
Technical specification
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ROLLING THIN FILM OVEN

Working size

483 x 445 x 381mm ( W x D x H)

Volume

82 Liters

Rating

2.0 KW

Temperature Range

50 °C - 300 °C

Temperature Control

Microprocessor based Auto-Tuning Digital PID temperature controller cum indicator

Temperature Display

LED Digital display

Temperature sensor

PT-100 sensor

Temperature Resolution

0.1 °C

Temperature Accuracy

± 1 °C or better

Shaft

Rotating Vertical Circular carriage for sample containers as mentioned in ASTM D2872 standard

Carriage Rotation

Rotated by electric motor at 15 ± 0.2 RPM as per ASTM D2872

Electric Motor

Of reputed make

Glass container

Clear, transparent, Heat resistant glass containers to be held in Circular carriage

No of glass containers

08 Nos

Air jet orifice

1.016 mm diameter

Copper tubing dimensions

7.6 meter length and 8 mm outside diameter

Construction

Tripple walled construction

Exterior body

Made of mild steel material, which is powder coated in attractive shades

Inner chamber

Made of Stainless Steel S.S. 304 - mirror polished material.

Insulation

High density glass wool insulation - (2.5”) in all sides of chamber to offer minimum heat loss

Heating element

Heating elements placed at the bottom of the oven Floor as per ASTM D2872

Blower

Suspended vertically from the ceiling of the oven for uniform heat distribution inside the working chamber

Door lock

Special heavy duty Stainless steel lock and door hinges with spring and roller mechanism

Observation window

With two sheets of glass separated by an air space, 11” x 13” (H x W)

Ventilation

Adjustable air ventilation mounted at top and bottom for dissipation of expended volatile from specimen as per ASTM D2872

Rate of air flow

Calibrated flow meter measuring range 0 - 4000 ml/min

Operation on

230 volts, 50 hz, Single phase, AC Supply

Internal circuitry wires

As per CE Compliance

Design

CE CERTIFIED Design criteria

Overall Dimensions

1160 X 700 X 960 MM

Weight (Approx.)

112 kg


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