The basic design of the unit includes a compact ball screw driver actuator, with DC motor and planetary gear, and a load cell with a digital force indicator. There is, as well, a dial indicator with 0.01 mm graduations for measuring linear displacement during testing.
The force can be set from the front panel of a digital force indicator or from PC software. The
specimen breakdown time can be seen either from a time counter at the front panel or from the PC.
AI's automatically operational constant load instrument is for the investigation of various forms of stress corrosion cracking (SCC) under different environmental conditions.