Here are some fundamental differences between Class A and Class DP Servo Hydraulic Universal Tensile Testers:

  1. Class A can only perform tension or compression test, while Class DP can perform tension and compression cyclical test.
  2. Class DP is much heavier system than Class A. It is a robust machine equipped with a heavier bottom platen and top platen. It also has a much larger cylinder.
  3. Class DP tensile tester uses I type load cell. This is an more advanced, precise and reliable load cell relative to Class A system.
  4. During specimen clamping Class DP Servo Hydraulic machine has smaller initial force than Class A. That means that Class DP has smaller rate of damage on specimens during clamping.
  5. Class DP system is shock absorbent allowing for a minimum ground shock upon tensile specimen break.
  6. Class DP is easier for tensile testing in general. It is more user friendly, accessible and accurate. When it comes to Class A tensile tester, the operator needs to use a small ladder when loading the specimens, because the tensile test space is in the upper section of the tester.

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