Dyna - Track Single Wheel Tracker

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.

technical specifications

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 customized 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

Dyna - Track Single Wheel Tracker

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technical specifications

TECHNICAL SPECIFICATIONS

Dyna - Track Single Wheel Tracker