CXD-3000 series is a latest developed intelligent itineration detector with good performance and multiple functions on the basic of CXT-3000 intelligent double digits adjuster and original CXD digital circuit detector. It chases CPU as computer center and merges micro-computer technology and industrial autocontrol as one whole with the functions of itinerating detection, fixed point control, overrun alarm, industrial PID self-setting, self timing etc. Each setting parameter and control parameter of meter adopts password classification lock to avoid wrong operation, setting on line or parameter modification doesn't need to break operating, and it also has function of parameter power off protection, which doesn't need to start to reset data. In order to easily replace and update, the installing mode(plate installation mode), outline dimension(160× 80× 175mm), model name and other technical criteria of CXD-3000 series is in accordance with CXT -3000 type intelligent double digits adjuster and CXD series digital itineration detector with very strong compatibility.