GD Engineering

Hi-T MAGAlert

The Hi-T MAGAlert is a robust non-intrusive magnetic pig signaller used to detect, signal and log the passage of
magnetic pigs at critical points along a pipeline. The Hi-T MAGAlert can be used for both offshore and onshore

The Hi-T MAGAlert is ATEX compliant and housed within a fully certifi ed aluminium or 316 stainless steel explosion
proof housing suitable for use in Zone 1, Zone 2 group IIA, IIB and H2 Areas.

The Hi-T MAGAlert can log up to 100 events with time and date. Logged events can be viewed on a 70mm (2.7”) high visibility display incorporated into the unit. Pig passages can also be signalled as they occur with ultra-bright LEDs which are incorporated into the unit and are visible from up to 100m. Prior to clearing the history of events it is possible to connect the Hi-T MAGAlert signaller to a PC and download all stored data.

The Hi-T MAGAlert is very quickly and easily attached to a pipeline using ratchet straps or stainless steel bands.

Detection Principle
The Hi-T MAGAlert incorporates a magnetic sensor which detects changes in the magnetic field (Gauss level). Consequently, pigs must be fi tted with rare earth magnets (neodymium iron boron) around the pig body. Detection
speed ranges from 0.1 to more than 10 m/s.

The window of detection, typically 0.2m either side of the Hi-T MAGAlert sensor, varies depending upon the pipeline diameter and wall thickness.

Hi T Magalert

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