Guided Wave Monitoring
MsS PIMS: Very Affordable!

For information about MsS PIMS, please email us at PIMS@gwanalysis.com

MsS PIMS (permanently installed monitoring sensor) is an ultrasonic transducer that is installed on piping, pipeline, and plate structure for structural health monitoring (SHM). The MsS PIMS consists of thin ferromagnetic strip and MsS coils for generating ultrasonic wave. In general, the 0.004-inch-thick ferromagnetic strip is boned using an epoxy on the structure under testing and the prefabricated MsS coils are placed over the strip. The MsS coils are wired to an easily accessible connection box and covered with an approximate protective tape layer. This is excellent for monitoring of buried pipeline and pipelines of high elevation, high temperature, or inaccessible area.

If the location is readily accessible, permanent installation of the thin ferromagnetic strip is sufficient for SHM and, thus, the installation of the MsS coils is not necessary. Data are acquired by placing MsS coils over the permanently installed strips. In this case, the structure can be monitored using multiple center frequencies of 32, 45, 64, 90, 128, 180, and 250 kHz for finding different sizes of defects, checking the buildup of surface corrosion, and SHM. This monitoring method is much economical for monitoring a large structure of refineries, chemical and electric power plants.

MsS PIMS manufactured at Guided Wave Analysis LLC

• Generates pure torsional mode in cylindrical and pure shear-horizontal mode in plate structure
• Uses continuous probe for removing near field length and has short dead zone length
• Has high sensitivity by increasing signal amplitude and reducing background noise
• Operates multiple center frequencies for finding different sizes of defects
• Is used for monitoring pipeline, pressure vessel, tank wall, and other structure in facility
• Has very low profile
• Is fabricated for easy installation and the best performance with low cost
• Detects small changes in condition and finding defect initiation and growth on geometric features
• Allows condition of structure to be measured and evaluated on continuous basis
• Significantly saves overall operating and maintenance costs