Heat Deflection Tester

Accurate, repeatable results

• The integrated control system used to run the test supports the operator with standard-compliant test performance
• With an accuracy of +/- 0.002 mm, the high-precision travel measurement provides a high standard of precision over the entire measurement range. The digital output does not drift over time.
• Modern oil bath temperature control with a special algorithm, which models the physical properties of the oil bath and guarantees linearity within the specified tolerances. The speed-controlled circulation pump from ZwickRoell guarantees uniform oil temperature across all 6 stations.
• The automatic blow-out function removes the remaining cooling water from the appliance's cooling system before each test, thus preventing a negative influence on the heating rates and the result.

User centered design

• Convenient specimen feeding frees up both hands of the operator, enabling them to easily handle the specimen.
• Weights can be added quickly and easily. With just a few clicks, the software displays the weight selection option to make it easier to assemble. The weights are easy to stack and allow the user to handle them safely. For heat deflection temperature tests, ZwickRoell offers weight sets that allow you to make adjustments in 1 g increments, exceeding the requirements of the most demanding standards. For ease of use and simple handling, the individual weight for Vicat softening temperature is limited to 2.039 kg. Specialized standard weights for ISO 75-2 allow the installation of only one weight instead of combining a set of weights. The setup time is significantly reduced.
• A unique design for the heat deflection tester support (one support for three different test dimensions: 64, 100 and 101.6 mm) means that the support itself remains in the device and is always ready for use.
• Fully automatic test sequences intuitively guide the user to reduce the risk of human error. All test standards are included and preconfigured. Standard operating procedures are guaranteed.
• The tests can be set up quickly and easily via the touchscreen in standalone mode. Operators can monitor graphs live and export data easily.
• The large viewing window and the red/green indicator lights ensure visual comfort for the operator.
• The individual configuration of the individual measuring stations enables heat defection temperature and Vicat softening temperature tests to be carried out in parallel and independently of each other.

• Effortless oil bath control

  • The automatic oil condition monitoring system checks the fill level and aging of the oil.
  • The oil bath is easily accessible. Dropped specimens are removed within seconds without removing the stations.
  • ZwickRoell offers special cages that prevent the specimen from falling into the oil bath.
  • Easy oil change – the intelligent design of the oil bath guarantees easy and complete draining of the oil so that no contamination from residues can occur when refilling. Overfill protection prevents contamination of the instrument and the environment.
  • The device has a powerful cooling system that quickly lowers the temperature of the oil bath, allowing the operator to start the next test with minimal waiting time and reduced water consumption costs. This requires a direct connection to a water pipe or to a heat exchanger with a closed circuit.
  • The shielding gas system comprises a flow control valve and a nozzle. It is used to form a layer of nitrogen over the surface of the oil and prevent the oil from having a chemical reaction with the air.

Uncompromising safety concept

The Amsler heat deflection tester was developed from the ground up with operator safety in mind. Without appropriate precautions, oil temperatures of up to 300 °C pose a real risk of serious injury to the operator and/or damage to the instrument. The safety features listed below are an uncompromising approach to ensuring operator safety while protecting the investment in this equipment.

• The fully encapsulated Amsler Allround 6-300 heat deflection tester prevents the operator from coming into contact with moving parts and hot surfaces.
• A hard-wired interlock prevents operators from opening the door if the oil temperature is above 45 °C.
• A redundant system with 2 overheating protection devices for the silicone oil and the heating element offers maximum safety for the instrument. Both the oil and the heating element are controlled independently of each other.
• Separate ventilation systems for the control cabinet, the electrical cabinet and the heating area ensure safe operating conditions.
• The pressure relief valve is integrated into the cooling water system to ensure maximum safety in the event of a blockage in the cooling water system outlet. This completely prevents a high build-up of vapor pressure in the cooling lines.
• The Amsler heat deflection tester complies with CE standards as well as the stricter UL standards. All safety aspects have been extensively tested and verified by TÜV SÜD, an independent and one of the most renowned certification organizations in Germany.

Ease of maintenance

• ZwickRoell's design allows easy access to all components of the machine, reducing downtime for maintenance and service inspection.
• ZwickRoell guarantees spare parts availability for ten years.