ERT-300 Computer Controlled 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


  • Main Configuration

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


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    1The software can control one or more testing machines. It can do the relax test for metal and non-metal
    materials.
    2. Perfect graphic function to complete the functions of the reappearance, amplification,
    reduction, self-adaptation, lapping of the curves, display and print the curve at the appointed range, observe the
    coordinate of the test point.
    3. Extrapolation of results from 100 hrs to 1000 incorporated in the software
    4. Load, deformation and temperature can be controlled and record in real time.
    5. The period of measuring and record can be setting.
    6. It can get back of the breaking points also with self-diagnose.
    7. The function of alarm under specimen broken, test over and failure. 


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    Load frame


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    Holder & specimen clamps 


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    LVDT for strain measuring with resolution 0.001mm 


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    Control panel and temperature meter


    • 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) 2200*650*1150*mm

    • Weight: about 1000kg

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


Model ERT-300 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;