Asphalt Binder Analyser Oven

Asphalt Binder Analyser for Fast, Safe Bitumen Content Determination without Solvents

• Cost Saving - Due to reduction in testing time and elimination of costly chemicals
• Rapid heat up rate - Ready for use after only 30 minutes
  Permits the unit to be switched off between tests, resulting in reduced power consumption and eliminating the need for a 24-hour timer
• Safe to Use - Door safety switch isolates power to the elements when the door is opened, double skin construction ensures cooler outer case temperature
• Low Maintenance - Independently controlled after-burner significantly reduces furnace emissions, eliminating health and environmental concerns and as no filter system is required, maintenance time is reduced
• Permits large sample sizes (up to 4.5kg) to be tested.
• Precise measurement - weights measured to 0.1g.
• Increased Life - Exposed element coils are recessed from the chamber opening and have the advantage of increased life due to lower element loading and the reduced risk of contamination build up on the element surface
• Easy Loading - The analyser is supplied with two sets of sample trays, loading handle, cooling cage and printer paper. The balance pan extension in the furnace chamber ensures that the sample tray is guided into position and is positively located within the chamber, ensuring ease of loading/unloading and preventing contact with the elements.

Easy to Read Display

The control panel incorporates temperature controls for the main chamber and the afterburner and an easy to read display where helpful step by step instructions, including set-up parameters, and test results are displayed. A printer provides a permanent record of tests, or data can be downloaded via an RS232 port. Input of the sample start weight, which must always be weighed externally, can be entered either manually, or uniquely and automatically, via an optional second external Ohaus balance connected to the unit via RS232 digital communications, which eliminates the possibility of operator error.

The Test

Once the test has commenced, the door is automatically locked for the entire period of the test and the extraction fan is automatically started. Average test times range from 20 minutes for samples with 6mm nominal aggregate, to 45 minutes for a sample with 40mm nominal aggregate. 
During the test, the integral dot matrix display shows the asphalt sample weight to a display accuracy of 0.1g, the present weight loss (both in grams and as a %), the rate of change of sample weight and also the duration of the test. This unique display gives an immediate indication of the progress of the test. The binder content, percentage weight loss and calibration factor are measured to 0.01%.
At the end of the test, which is signalled by an audible alarm, the display changes to show the binder content of the sample, the door is unlocked and the results are printed. A choice of printouts is available; either as a final end of test analysis or as a continuous printout showing results every minute, including a final end of test analysis.

Balance Calibration

The balance is simply calibrated using standard weights whilst in position. A lift compensation factor allows for the lift created by the extraction fan and subsequent reduced air density. Supplied with two sets of sample trays, loading handle, cooling cage and printer paper. The furnace is rated for 8kW for operation on 208/240 volts, 50/60Hz, three phase or single phase, and the furnace holding power is approximately 3kW.

Specification

Height without chimney	980mm
Height with chimney	1160mm
Width	600mm
Depth (length)	750mm
Weight	120kg(approximate)
Power Rating	8000Watts

Click to view a PDF file of the User Guide