2.2.8 spase://SMWG/Instrument/ISS/FPMU International Space Station, Floating Potential Measurement Unit, FPMU 2017-08-23T12:34:56.789 International Space Station, Floating Potential Measurement Unit. FPMU, The FPMU is used to correct the charging models of the station each time a new section is added to the structure. By providing feedback on the effectiveness of steps taken to control charging, the FPMU helps ensure a safe working environment for the astronauts. R.M. Suggs, S.L. Koontz, NASA Johnson Space Center, Contact Rob Suggs for support and use. spase://SMWG/Person/Robert.M.Suggs PrincipalInvestigator spase://SMWG/Person/Steven.L.Koontz PrincipalInvestigator spase://SMWG/Person/Lee.Frost.Bargatze MetadataContact Floating Potential Measurement Unit Web Site http://www.sdl.usu.edu/programs/fpmu Floating Potential Measurement Unit, FPMU, Information and Details LangmuirProbe International Space Station FPMU 1998-11-20T00:00:00 spase://SMWG/Observatory/ISS