Model ERT-300V Vertical Type Electronic Relaxation Testing Machine
  • Testing standard: ASTM E328, ASTM A1061/ A1061M, ISO 15630, BS5896, GB/T 10120 etc

    • Control method: Industrial PC automatically control, arbitrary point position keeping 

    • Operation system: Windows 10 OS or above

    • Extrapolation of results from 100 hrs to 1000 incorporated in the software

    • Recording time interval of data point: 0.1s-72hrs, randomly set 

    • Max. duration of test: ≥1000hrs

    • Storage of the data: ASCII text, PC automatically storing

  • ERT-300V Load frame, Control data processing system (PC, control and data processing software, and multifunction measurement & control card), and the holder & specimen clamps for φ15.2mm, 12.7mm, 9.5mm;

    • Load frame adopts vertical structure for the direct, simple and safe operation. Tensile test space can be enlarged to above 1400mm and it has higher test result accuracy.

    • Higher stiffness of the load frame can avoid errors due to relaxation of the load frame, and guarantees the test accuracy. 

    • It adopts guide screws with no space and has compact structure and high testing efficiency.

    • In the test process, the PC controls the servo motor by speed adjusting system and then it drives the move up or down of the moving crosshead by high precision guide screws after the reducing system, so the test on relaxation properties of the test specimens is complete. 

    • It features in no pollution, low noise and high efficiency. 

    • It has wide speed adjustment range and large crosshead moving space for many application prospects.

    • Max. Load: 300kN

    • Load measurement range 6kN ~ 300kN, full automatic transmission;

    • Load accuracy in the measurement range: ± 1% of indicated value

    • Test Force Resolution 0.05% FN

    • Displacement resolution 0.001mm

    • Speed range 0.05mm / min ~ 50mm / min, stepless

    • Speed accuracy 1mm / min or more, ± 3% of indicated value

    • Maximum stroke 70mm

    • Maximum tensile space 1200mm (including the extension stroke)

    • Specimen clamping range φ15.2mm, Option (12.7mm, 9.5mm)

    • Speed control system and servo motor: AC servo systems using Yaskawa, Japan

    • Speed accuracy: 1mm / min or more, ± 3% of indicated value

    • Test force measurement: ± 1% of indicated value.

    • Displacement measuring system: Displacement measurement by Heidenhain LVDT, Germany.

    • Control and Display System: Resolution 0.01mm 

    • Dimensions (L × W × H) 1000x600x3000mm

    • Weight: about 1150kg

    • Power: 380/220V, 3phases,50Hz, 2kW 

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Model: ERT-300V
Description：Model ERT-300V Computer Controlled Electronic Relaxation Testing Machine is designed for the relaxation tests of PC steel bar, steel wires, indented wire, and galvanized steel wire etc. This machine adopts vertical load frame with great rigidity, AC servomotor with zero clearance & great torque precise reducer to drive the screw to carry out the adjustment of the test space, the tension of specimen and keeping of the load force, to complete the relaxation test. The machine is equipped with especially designed industrial PC. The control and data processing system of IPC has very high reliability, which can meet the requirements of data adopting, displaying, storage and data analyzing demanded by the relaxation test that over 1000 hours;