1.detection temperature: room temperature to 1000 ℃ adjustable; 

2.heating speed: 0-20 degrees / min adjustable, microcomputer programmed temperature control, temperature control precision 士1℃。 

3.Determination of deformation range: ± 1.5mm. 

4.Displacement sensor sensitivity 0.1um, automatic calibration range. 

5Computer automatically calculate the expansion coefficient, body expansion, linear expansion amount