This instrument is designed to determine the heat deflection temperature (HDT) and Vicat softening point (VST) of non-metallic materials such as plastics, hard rubber, nylon, electrical insulating materials, long fiber reinforced composites, and high-strength thermosetting laminates. With user-friendly operation and precise control, it is a highly intelligent and advanced testing device.
Compliant with the following standards:
GB/T 1633, GB/T 8802, GB/T 1634, ISO 2507, ISO 75, ISO 306, ASTM D1525, ASTM D648, and others.
Multiple Safety Protections: Equipped with mechanical and software-based over-temperature protection switches to ensure safe testing.
High-Precision Measurement & Control:
Uses a grating digital dial gauge for accurate deformation measurement.
Temperature is controlled via PID algorithm combined with a fully opto-isolated phase-control module.
Heating rate deviation is kept under 0.5°C.
Parameter | Specification |
Temperature control range | Room temperature ~ 300°C |
Temperature accuracy | ±0.5°C at 50°C/h heating rate; ±1°C at 120°C/h |
Heating rate | 50°C/h, 120°C/h |
Temperature measurement points | 1 |
Number of test frames | 3 |
Deformation measurement range | 0–10 mm; Accuracy: ±0.01 mm |
Support span for specimen | 64 mm / 100 mm |
Specimen frame | Automatic lifting; Thermal expansion coefficient < 0.005/100°C |
Heating medium | Methyl silicone oil or transformer oil |
Cooling method | Natural cooling above 150°C; Water or natural cooling below 150°C |
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