LT-JJ37, a ball rebound coefficient measuring instrument | test machine | foam sponge elastic compression resilience coefficient tester instructions: this instrument is the ball free fall in soft foam or other elastic material specimen. Determination of the rebound height instrument is mainly used for the determination of resilience polyurethane elastic materials in test items (rebound coefficient). According to the national standard of People's Republic of China 6670-86 "determination of soft foam resilience; the instrument adopts photoelectric technology, electromagnetic control, digital display measurement, with accurate determination and good repeatability, which is convenient, beautiful shape and other characteristics, and the measuring instrument and test the two methods, which not only increase the instrument credibility. And it is convenient for users to use the control, rebound performance accurate determination of soft foam elastic material, determination method provides a feasible instrument to reduce human error and visual fatigue.

Two, LT-JJ37 ball rebound coefficient measuring instrument | test machine | foam sponge elastic compression resilience coefficient tester specimen requirements: material forming, at least for 72 hours to test. Before testing, the sample should be in the temperature of 23 2 degrees C, the relative humidity of the environment in the state for at least 16 hours, and then in the above environment for testing 45%-50%.

1 samples of the rectangular, up and down the two surface should be parallel to each other, the sample is not allowed with the skin

2 sample size: long 100mm, wide 100mm, high 50 2mm

3 quantity: 3 each

4 sampling direction: the direction of falling ball rebound should be consistent with the direction of the actual use

Three, LT-JJ37 ball rebound coefficient measuring instrument | test machine | foam sponge elastic compression resilience coefficient tester technical parameters:

1 power supply voltage: 50HZ 220V

2 instrument test resolution: 1/10000 seconds

3 rebound coefficient measuring range: 25% ~ 80%

4 test error: < 1%

5 falling ball height: 460MM (national standard) 500MM (ASTM standard)

6 size: long 250MM wide 200MM high 600MM