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    HDT Vicat Allround A1

    HDT Vicat Allround A1

    Determination of heat deflection temperature (HDT)
    • as per ISO 75, Parts 1 to 3, and ASTM D648,nMethods A and B, on thermoplastics, hard rubber and fiber-reinforced and filled thermosets. Determination of Vicat softening temperature (VST)
    • of thermoplastics as per ISO 306 and ASTM D1525 . Determination of creep behavior
    • under flexural load

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    Product Description

    Feature and Advantages
    Function description
    Zwick’s HDT/Vicat Allround instruments are designed to enable convenient testing in research and development, goods inwards checks and production monitoring as well as for educational and training purposes. The instruments are available in various versions with up to 6 testing stations according to requirements. Testsequence parameterization and display of measured values are conveniently handled via Zwick Roell testing software.
    Automatic test sequence
    As soon as the heat-transfer fluid has reached the starting temperature, the specimens are inserted into the measuring stations and lowered (motor-driven) into the oil bath. In the next step the test weight specified in the standards is applied to type A1 instrument manually and to type A3 by motor drive and the test sequence is started by the PC software. On completion of pre-heating under the influence of force, the displacement signals are zeroed (programcontrolled) and the heating of the heat-transfer liquid at the previously set rate is started. As soon as the required deflection, outer-fiber strain or penetration is attained, the heating is switched off and the test is ended. Re-cooling of the heat-transfer fluid is started automatically via a solenoid valve. The specimens can afterwards be removed.
    Functions, elements and interfaces
    • Built-in programmable logic controller (PLC) for temperature control and measured-value acquisition
    • Re-cooling controlled by solenoid valve
    • Motorized lowering of measuring stations
    • Safety thermostat
    • Electronic level-monitoring
    • Test control and data acquisition via PC with Zwick Roell testing software (RS232 interface in PC required)
    • Integrated compensation for heat expansion
    • Manual application of test weights (type A1 instrument)

    Re-cooling the heat transfer fluid for A1
    Cooling for type A1 HDT/Vicat instruments is by means of a cooling coil located in the oil-bath. Coolant can be
    pumped in via a connection located on the left-hand side of the instrument. Water cooling starts automatically via a solenoid valve, but not before 130°. For faster re-cooling a connection for an external re-cooling unit is available (option).


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    Technical data 

    Description                                                                                Value
    General technical data for HDT/Vicat Standard instruments
    Display accuracy at 250 °C                                                                                               ±0.5                          °C
    Spatial temperature gradient                                                                                      ±0.1                          °C
    Temperature measurement resolution                                                                                     0.1                             °C
    Temperature sensor                                                                      Oil-bath temperature is measured by 1 temperature sensor.
    Heating rate                                                                                 50, 120 or freely adjustable                                                                                   K/h
    Displacement measurement with digital measuring transducers:
    resolution                                                                                  0.001                      mm

    display accuracy                                                                                      ±0.01 mm Connection:

    mains voltage                                                                                      230/240                      V

    mains frequency                                                                                  50/60                        Hz

    power rating                                                                                       3460                          W

    water supply, max.                                                                                        10                            bar

    PC interfaces required                                                              • 1x for temperature channel (RS)

    •  1x for displacement channel (RS)

    Specimen data
    VST specimen dimensions, max.                                                  10 x 6.5 x 10                                                                                               mm
    HDT specimen dimensions, max.                                                13 x 15 x 130                                                                                             mm
    HDT spans                                                                                  64, 100 and 101.6                                                                                          mm


    HDT/Vicat with temperature range up to 300°C


    Item no. 3260301)2)                       3260321)2)                                             3260361)2)
    Type HDT/Vicat 3-300 S       HDT/Vicat 4-300 S       HDT/Vicat 6-300 S
    No. of measuring stations 3                                  43)                                         6
    Temperature range +20 to +300                 +20 to +300                                    +20 to +300 °C
    Re-cooling PC-controlled via solenoid valve
    Oil capacity, approx. 19.9                             36                                    36 l
    Height x width x depth 500 x 440 x 600           500 x 710 x 600                                    500 x 710 x 600 mm
    Weight (without accessories), approx. 30                                35                                    35 kg