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Asphalt/bituminous mixture

Dyna - Track Single Wheel Tracker

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EN 12697-22
Main features
  • Automatic test control by data acquisition and processing system
  • Large permanent memory to store test data and results
  • RS 232 ports for connection to PC and printer
  • Real time display of number of cycles, rut depth and temperatures
  • Tracks for specified number of passes or to specific rut depth
  • Adjustable load cycle frequency
  • Double temperature measurement: inside the specimen and in the cabinet
  • Test temperature range from ambient to 65°C
  • Motorized loading arm for easy positioning
  • Double glazed doors for observation of testing cycle
  • Testing software included for procedures EN, A and B, and custom defined
General description
General description
The wheel tracking apparatus consists of a loaded wheel, which bears on a sample held on a moving table. The table reciprocates with simple harmonic motion through a distance of 230 ± 5 mm with a frequency of 53 passes (± 1%) per minute. For reasearch purposes the test speed can be adjusted by inverter control. The wheel is fitted with a solid rubber tyre of outside diameter 200 mm. The wheel load under standard conditions is 700 ± 10 N. The wheel tracker is fitted with a temperature controlled cabinet with a temperature range from environment to 65°C ± 1.0°C.The sample may be either a 200 mm diameter core or a 300 x 400 mm slab of asphaltic mixture from 25mm to 100 mm thick. A 25 mm stroke LVDT transducer is included for monitoring rut depth in the centre of a sample during a test to better than 0.1 mm.
The deformation and sample temperature is recorded by the internal data acquisition and control system, then sent to the Windows® compatible software.
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Technical specifications

Wheel Tracker:
  • Conforming to EN 12697-22 Small scale device
  • Table displacement with adjustable speed by inverter
  • Motorized vertical adjustment of the loading arm
  • Wheel with solid rubber tyre 200 mm external dia.
  • Wheel weight 700 N (900 N available on request)
  • Suitable for large core specimens and slabs up to 400x300 mm.
  • Slab thickness from 25 to 100 mm
  • 25 mm stroke transducer with resolution better than 0.1 mm
  • Integral temperature controlled cabinet
  • Test temperature range adjustable from environment to 65°C
  • Double glazed doors for test monitoring
Hardware
  • 16 bit microprocessor.
  • One CPU card to control both test data visualization, temperature control, database and internal functions management control.
  • Large permanent memory to store test results.
  • 10 key membrane touch keyboard.
  • 240 x 128 pixel graphical display.
  • RS 232 output for PC connection.
Firmware
  • Language selection.
  • Clock/Calendar system.
  • Fully automatic test control
  • Test setting menu, complete with descriptive sample parameters.
  • Calibration menu to set and check temperature, table speed and displacement, and featuring a special function for manual control of the test performance.
  • Test performance menu with simultaneous display of all the test data (including real time table speed).
  • Internal database up to 100 tests. Each test can be downloaded to a PC, displayed, printed or deleted.
  • Download to PC via RS 232 serial port.
  • Data processing to EN 12697-22 Small scale device, procedure A and B, and customised test
  • Windows XP® compatible software, for printing of test certificates and multiple test processing (mean values).
SAFETY FEATURES
  • Automatic stop of climatic chamber and moving table when opening the door

Ordering info

77-PV3502 
DYNA-TRACK, Wheel tracking machine. 230 V, 50-60 Hz, 1 ph

77-PV3504 
DYNA-TRACK, Wheel tracking machine. 110 V, 60 Hz, 1 ph

Accessories

Sample confinement frames

77-PV3502/L25 
Sample confinement frame, size 400x300 mm, 25 mm high

77-PV3502/L60 
Sample confinement frame, size 400x300 mm, 60 mm high

77-PV3502/L100 
Sample confinement frame, size 400x300 mm, 100 mm high

Spares

77-PV3502/11 
Replacement rubber tyred rim  for wheel tracker

Documents

Partner's Documents