Test StandardASTM D3574. ISO8307Technical ParameterSteel ball drop distanceGB 460±0.5%mm o
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ASTM D3574. ISO8307
| Steel ball drop distance | GB 460±0.5%mm or ASTM/ISO 500±0.5%mm |
| Steel ball diameter | ￠16±0.05 mm |
| Steel ball weight | mass 16.8g ± 1.5 g |
| Accuracy | <1.5% |
| Display | LCD Touch Screen interface |
| Standard sample size | 100mm(L)100 mm(W)50mm(H) |
| Printer | YES |
| Test results | Output by built-in printer |
| Test Data | Automatic calculation of average rebound rate |
| Test results | Output by built-in printer |
A set of mainframes (including release mechanism, height adjustment mechanism)
A set of optical fiber distance measuring sensors,
A set of control boxes (LCD touch screen control),
A steel ball,and a magnetic bar
This machine is designed and manufactured according to ASTM D3574. ISO 8307. GB/T6670-97. It is suitable for determining the falling ball resilience of soft polyurethane foams. The instrument calculates the maximum rebound height of the steel ball and the percentage of the falling height of the steel ball by the steel ball with a given diameter and quality falling freely on the foam sample at a specified height, and the rebound rate represents the resilience of the foam. The machine uses microprocessor to control, touch screen Chinese display, and can print test data. The machine has the characteristics of safety, reliability and high measurement accuracy.
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