Patent ID: 8895931
Filing Date: 2014-11-25
Classification: G01D,G01N

Abstract:
1. An apparatus in the form of a monitoring instrument for monitoring ionizing radiation comprising a water-proof housing assembly comprising a housing and a display panel, and incorporating an enclosure containing electrical apparatus, the electrical apparatus being housed within said enclosure and the electrical apparatus comprising a radiation detector for monitoring ionizing radiation, a power source for said radiation detector, and a data processor/controller, wherein said display panel is formed from a clear material encapsulating a visual display, said visual display displays at least one status or measurement related to ionizing radiation which is monitored by the monitoring instrument, wherein said apparatus is adapted for monitoring the proximity of a pipeline pig, said radiation detector is capable of detecting radiation emitted by a source of ionising radiation mounted on the pipeline pig, and said data processor determines the proximity of the pipeline pig from the radiation detected by the detector.