HDT/Vicat Allround – the All-Rounder for Convenient Testing

ZwickRoell'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. Test-sequence parameterization and display of measured values are conveniently handled via ZwickRoell testing software.

Key Advantages and Features

  • Measuring station lowered automatically
  • Optionally available automatic test-weight lowering
  • Optional internal re-cooling device for rapid attainment of starting temperature
  • Testing to ISO 306, ASTM D1525, ISO 75 and ASTM D648.

Applications

  • Determination of heat deflection temperature (HDT)
  • as per ISO 75, Parts 1 to 3, and ASTM D648, Method 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

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 ZwickRoell testing software (RS232 interface in PC required)
  • Integrated compensation for heat expansion

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 (program-controlled) 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.

Recooling the heat-transfer liquid

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. Cooling is started automatically via a solenoid valve, however only at 130° or above. For faster re-cooling a connection for an external re-cooling unit is available (option).

Technical Overview

Integrated recooling unit

HDT/Vicat Allround with integral re-cooling unit and motorized test-weight application

Type

HDT/Vicat 3-300

HDT/Vicat 4-300 A3

HDT/Vicat 6-300 A3

Item No.

326042

No. of measuring stations

3

4[1]

6

Maximum number of measuring stations

3

Maximum temperature

+ 300

°C

Temperature range

+20 to +300

+20 to +300

+20 to +300

°C

Temperature sensor

Pt 100

Recooling

Motorized

Capacity of heat transfer fluid

12

l

(the amount of heat transfer fluid must be adjusted the temperature used.)

(the amount of heat transfer fluid must be adjusted the temperature used.)

Temperature measurement:

Display accuracy at 250°C

± 0.5

°C

Spatial temperature gradient

± 0.2

°C

Temperature measurement resolution

0.1

°C

Heating rate

50, 120 or freely adjustable

K/h

Display accuracy at 250°C

Spatial temperature gradient

Temperature measurement resolution

Heating rate

Travel measurement:

Measurement range

1 to 15

mm

Display accuracy

± 0.01

mm

Measuring system

Inductive LVDT measurement transducers

Measurement range

Display accuracy

Measuring system

Connection:

mains voltage

230/240

V

Power frequency

50 to 60

Hz

Power

3 000

W

mains voltage

Power frequency

Power

Dimensions:

Height

900

mm

Width

1 230

mm

Depth

700

mm

Height

Width

Depth

Weight (without accessories), approx.

130

160

160

kg

Operating data

Coolant connection:

Flow rate, at least

5

l/min

Inflow pressure, maximum

10

bar

Connection

for hose with an inner diameter of 13.5 mm (1/2 ")

Cooling water temperature

+10 to +50

°C

Flow rate, at least

Inflow pressure, maximum

Connection

Cooling water temperature

Mains

Voltage fluctuations

≤±10

% with reference to the nominal power supply as quoted

Short term interference

≤20

ms

Frequency

±1

% related to the nominal frequency as quoted

Ground

Ground resistance ≤5

Voltage fluctuations

Short term interference

Frequency

Ground

  1. Can be increased to 6 measuring stations via retrofit

Optional recooling unit

HDT/Vicat Allround with coolant (water) supply connection

Type

HDT/Vicat 3-300 A1

HDT/Vicat 4-300 A1

HDT/Vicat 6-300 A1

Item No.

326038

No. of measuring stations

3

4[1]

6

Maximum number of measuring stations

3

Maximum temperature

+ 300

°C

Temperature range

+20 to +300

+20 to +300

+20 to +300

°C

Temperature sensor

Pt 100

1 x per station and 1 x per bath

Recooling

Manual

Capacity of heat transfer fluid

12

l

(the amount of heat transfer fluid must be adjusted the temperature used.)

(the amount of heat transfer fluid must be adjusted the temperature used.)

Temperature measurement:

Display accuracy at 250°C

± 0.5

°C

Spatial temperature gradient

± 0.2

°C

Temperature measurement resolution

0.1

°C

Heating rate

50, 120 or freely adjustable

K/h

Display accuracy at 250°C

Spatial temperature gradient

Temperature measurement resolution

Heating rate

Travel measurement:

Measurement range

1 ...15

mm

Display accuracy

± 0.01

mm

Measuring system

Inductive LVDT measurement transducers

Measurement range

Display accuracy

Measuring system

Connection:

Power supply voltage

230/240

V

Power frequency

50/60

Hz

Power

3 000

W

Power supply voltage

Power frequency

Power

Dimensions:

Height

900

mm

Width

1 230

mm

Depth

700

mm

Height

Width

Depth

Weight (without accessories), approx.

65

90

90

kg

Operating data

Coolant connection:

Flow rate, at least

5

l/min

Inflow pressure, maximum

10

bar

Connection

for hose with an inner diameter of 13.5 mm (1/2 ")

Cooling water temperature

+10 to +50

°C

Flow rate, at least

Inflow pressure, maximum

Connection

Cooling water temperature

Mains

Voltage fluctuations

≤±10

% with reference to the nominal power supply as quoted

Short term interference

≤20

ms

Frequency

±1

% related to the nominal frequency as quoted

Ground

Ground resistance ≤5

Voltage fluctuations

Short term interference

Frequency

Ground

  1. Can be increased to 6 measuring stations via retrofit

General technical data

Description

Value

General technical data for HDT/Vicat Allround instruments

Display accuracy at 250 °C

±0.5

°C

Spatial temperature gradient

±0.2

°C

Temperature measurement resolution

0.1

°C

Temperature sensor

Oil-bath temperature is measured by 1 temperature sensor. In addition 1 sensor is located adjacent to the specimen at each measuring station

Heating rate

50, 120 or freely adjustable

K/h

Displacement measurement with inductive LVDT measuring transducers

displacement measurement range

15

mm

display accuracy

±0.01

mm

Connections:

mains voltage

230

V

mains frequency

50/60

Hz

power rating

3000

W

water supply, max.

10

bar

PC interfaces required

RS232 interface

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

testXpert III Testing Software

Top