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WHEEL TRACKER

SMALL DEVICE – 1 & 2 ARMS

Wheel tracking is used to assess the resistance to rutting of asphaltic materials. A loaded wheel tracks a sample under conditions of load, speed and temperature. Test specimens can be either slabs prepared with a laboratory compactor or 200mm Ø cores cut from the highway. The CRT-WTEN1 wheel tracker performs both procedures A and B specified for the small scale device in EN 12697-22. Procedure A requires that six specimens are tested. For procedure B only two specimens need to be tested, but rut depth must be measured at more points along the longitudinal rut profile. To speed up the testing process the CRT-WTEN2 was designed to test two specimens simultaneously. The CRT-WTEN1 and CRT-WTEN2 are supplied with a UKAS certificate of accreditation validating conformance to EN 13108

Wheel Load (N) 700N / 520N Mould Dimensions (mm) 305 x 305mm (Others Available) Wheel Speed 26.5 cycles per minute Slab Thickness (mm) 40 to 100mm Rut Depth Transducer Range (mm) 50mm Working space required (mm) (W x D x H) Single 1680 x 1840 x 1940mm Dual 1850 x 3090 x 2070mm PC Included

KEY FEATURES

• Tests materials for roads with axle loads up to 13 tonnes • Rigid test frame built from extruded aluminium section • Integral temperature controlled cabinet with double glazed doors • PID control of test temperature in the range of ambient to 62°C • Rack for pre-test temperature conditioning of specimens • The CRT-WTEN2 tests two specimens simultaneously • Specimens compacted with the Cooper Technology Roller • Compactor can be transferred directly to the wheel tracker without de-moulding • Closed-loop speed control • User-friendly Windows™ software • Supplied with certification of a UKAS accredited calibration KEY USE • Determination of the rut resistance of asphaltic paving materials SOFTWARE • User friendly, intuitive and reliable Windows™ software developed using LabVIEW™ • Software is designed to perform EN 12697-22 Small device • Software automatically starts the wheel tracker, maintaining the speed at the specified 26.5 cycles per minute • Measures rut depth and sample temperature automatically at regular intervals • The rut profile is captured automatically by the software and analysed to calculate the rut depth • A continuously updated on-screen graph shows rut depth versus time, along with the rut profile and temperature • Software stops the wheel tracker on completion of a test and prints a test report if required • Stored test data can be analysed and compared with other test data utilising a spreadsheet package • Utilities are included for transducer check, diagnostic routines and RTD calibration

STANDARDS

EN 12697-22 SMALL DEVICE

AGPT/T231 (SUPERSEDES AST 01)

BS 598-110:1998

MACHINE SPECIFICATION

Weight (Kg) Single 448Kg Dual 500Kg Dimensions (mm) (W x D x H) Single 1579 x 840 x 1740mm Dual 1750 x 1090 x 1970mm

WEIGHT & DIMENSIONS

ACCESSORIES

Accessories are not included in the price of main device (unless stated otherwise) and may be purchased separately if required.

Temperature Range (°C) Ambient to 62°C

TEMPERATURE

Calibration, Annual Service and Maintenance Contracts are available for this device. UKAS accreditation to satisfy typed testing as described in EN 13108. Please enquire for further details. Note This device should be checked and calibrated annually.

CALIBRATION & MAINTENANCE

Mould – 305x305x50mm deep

CRT-WTRCM-50

Mould – 305x305x100mm deep

CRT-WTRCM-100

Mould – Insert 305x305x10mm

CRT-INSERT-10

Split Holder with Steel Base-plate Ø200mm

CRT-WTM-DIAM200

Mould – 305x305x50mm deep Stainless Steel

CRT-WTIMRCM-50

Mould – 305x305x100mm deep Stainless Steel

CRT-WTIMRCM-100

Plastic Mould (6″) inserted in Stainless Steel Mould

CRT-WTIMRCM-26060-150

Plastic Mould (6″) inserted in Stainless Steel Mould

CRT-WTIMRCM-26050-150

Rubber Wheel for EN 12697-22

CRT-WH-IRHD20-80 (Replacement Pt.)

Rubber Wheel for AST 01:2004

CRT-WH-IRHD20 (Replacement Pt.)

Electrical Supply * Single 220-240 Volts 50/60 Hz @ 13A Dual 220-240 Volts 50/60 Hz @ 16A * Other electrical supplies available on request

ELECTRICAL SPECIFICATION

Compressed Air (required for WTEN2 model only) Minimum 4 Bar (@ 60C) @ 100L/Min

AIR

SPECIFICATIONS

Cooper Research Technology Unit C, Albert Court Peasehill Road Ripley, Derbyshire DE5 3AQ United Kingdom Tel. +44 (0)1773 512 174 Email. sales@cooper.co.uk Web. www.cooper.co.uk

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