Online's 3015 series of 22Hz electromagnetic transmitters can be fitted to pigs to allow locating and tracking in any onshore and offshore pipeline including buried pipelines, pipelines carrying gas or liquid and in pipeline bundles. The transmitters can be customised at build - for example the pulse rate can be altered to provide the desired battery life and to allow for differentiation within a pig train.
An inherent electromagnetic null spot is detectable using an electromagnetic antenna meaning that the operator can confirm the location of the transmitter to within a few centimetres. This greatly reduces vessel and operational downtime by facilitating the process of locating a stuck pig or confirming if a pig has left the launcher or been successfully received.