The faith of design of the detector is firmly, reliable and durable. The controller adopts the integration technology to make the inner configuration more reasonable with imported apparatus, and more residual electric parameter. The design espousing under the 120kv prolongs the life of the x-ray tube and coil and improves the reliability of produce at the same time. There is a strong adjustability of detector. It adopts the control circuit and control technology to control the power source, so it can work at anyone methods of supply. The product technology has got two national patents. Applying fields: spaceflight industry, shipbuilding industry, metallurgy industry, chemical industry, power supply, automobiles, pressure container, heavy machine manufacture industry, bridge building industry and etc.