PARAMTM BMC-B1 Falling Dart Impact Tester is applicable in the impact result and energy measurement of the falling dart from a certain height against plastic films and sheets with a thickness less than 1mm, which would result in 50% tested specimen failure.
Characteristics
Micro-computer calculation, LCD display and Manu interface;
Two test methods integration: A & B.
Built-in observation light;
Pneumatic specimen clamp and release;
Falling dart electromagnetic suspension and automatic release;
Two start modes: Manual and foot-pedal;
Automatic testing status judgment;
Multi-unit result display and printing;
Mini-printer;
RS232 port;
Network transmission interface for LAN data management and Internet data transmission.
Principle
At the beginning of the test, choose test method, and estimate an initial mass and Δm. Start test. If the first specimen fails, decrease the mass of the falling dart by decreasing weight of Δm. If the first specimen is not a failure, add the mass of the falling dart by increasing weight of Δm. Go on testing as per this rule. In brief, increase or decrease the Δm according to whether the former specimen is a failure or not. After 20 specimens, calculate the total number of failed specimens N. If N equals to 10, test is over. If N is less than 10, add specimens and continue to test until N equals to 10. If N is more than 10, add specimen and continue the test until the number of non-failure specimen is 10. Then the tester calculates the test results automatically. according to special formula.
Technical Indexes
Test Method: A, B (optional)
Test Range: method A: 50~2000g
method B: 300~2000g
Accuracy: 0.1g (0.1J)
Specimen Clamping: pneumatic
Gas Source Pressure: 0.6MPa (users provide gas source by themselves)
Inlet Size: Ф8mm polyurethane pipe
Specimen Size: >150mm x 150mm
Power: AC 220V 50Hz
Net weight: 70kg
Dimensions: method A: 500mm(L) x450mm(B) x1320mm(H)
method B: 500mm(L) x 450mm(B) x 2160mm(H)
Standards
ASTM D1709, ISO 7765, JIS K7124, GB 9639
Configuration
Standard: method A configuration, mini-printer
Optional: method B configuration, professional software, communication cable
Note: gas inlet of this tester is Ф8mm polyurethane pipe; users provide compressed air by themselves.
