... ceramic tube Output current 5mA NDT Equipmentsinclude portable X-ray flaw detector, X-ray pipeline crawler, X-ray real time image ... vessel,boiler,petroleum,chemical and national defense.- Portable X-ray flaw detector is made up by x-ray generator, controller, connecting ... voltage and exposing time can be preset, the timer is digital. The controllers have over-voltage protection, over-current protection, ...