A high precision thermal expansion meter is good enough to see if it has these characteristics

8. High-precision thermal expansion instrument for thermal expansion of material samples, melting point test, grey melting point, melting characteristics, storage of images of sample changes; images of the melting process (initial point, shrinkage point, spherical, hemispherical, liquefaction) are stored and automatically printed, providing information on width, height, roundness, temperature creep, etc.

A high precision thermal expansion tester is one that measures the dimensional change of a sample as a function of temperature or time under a certain temperature program and a loading force close to zero. It can measure various types of samples such as solids, molten metals, powders and coatings, and is widely used in inorganic ceramics, metallic materials, plastic polymers, construction materials, coating materials, refractory materials, composite materials and other fields.

Currently, the instrument uses the shaded light method. In this method, the size of the sample in one direction is measured by measuring the shadow of the sample on the CCD detector. A high intensity GaN LED emits planar light, which is passed through a diffusion unit and collimating lens to produce a highly uniform, short-wave planar light. A portion of this light is blocked by the sample. The shadowed beam is finely processed by a telecentric optical system and recorded by a high-resolution CCD detector. Digital edge detection automatically determines the width of the shadow and thus the size of the sample.

Features of the high precision thermal expansion meter.

1. simultaneous processing of 2 sample moulds in a single analysis.

2. automatic operation with graphical techniques for the analysis of the grey melting point.

3. advanced technology for monitoring, computer calculation and storage of data and curves.

4. the possibility of carrying out the analysis under added or reduced oxygen pressure, with a sample temperature range of 200 to 1550 °C.

5. the image being saved (at 5°C intervals) can be animated as a melt curves, melting points, temperature creep are printed and saved.

6. automatic identification of shapes (columnar, pyramidal increase, pyramidal collapse, filamentary) and computer analysis of changes in angles and tops relative to the initial state.

7. Once the sample is placed in the furnace, the operator does not have to do anything until the analysis is completed. Results are automatically saved in the database and printed; you get printed reports, pictures, melting curves, digital melting processes, resolution of 4°C.