Chemetall Type I Magnetic Flux Indicators (Pack of 5)

Flux Indicators give evidence of an external field in the air above the magnetised surface and in some circumstances can be used to obtain a semi-qualitive estimate of the tangential field strength H.

Type I indicators are typically used for general engineering applications and consist of three laminations measuring 50 x 12 mm which are fixed together to form a sandwich structure which is nominally 0.15 mm thick. The inner lamination has three interruptions, which are parallel to the long side. The width of these interruptions and the material of the outer laminations means that the type I indicators respond to a weaker field than type II strips.

The indicator strips are protected by a polymetric layer and have the advantage of being flexible enough so that they can be bent to fit the contours of a workpiece, but robust enough to enable them to be used many times. They may also be cut into smaller pieces to allow them to be fixed in recesses and otherwise inaccessible locations on the workpiece.