A spinning impingement multiphase contacting device and method for heat or mass transfer are disclosed. Rather than providing rigid reinforcement, as with the prior art, various forms of damping arrangements are disclosed including those which permit different damping in one direction from the other and utilizing either elastic or hydraulic viscous type dampers. A current load is injected at the node, and the output of the voltage comparator can be used to determine if the integrated circuit performs within the specifications set by a manufacturer.