EXTREME ENVIRONMENT SENSORS

July 26, 2010
Kaman Precision Products | Measuring offers a line ofhigh-precision sensors and systems that provide accurate and precisenon-contact position/displacement feedback in the most hostile ofenvironments. These inductive-based displacement sensing systems operatefrom –320°F to +1,000°F continuous and up to +1200°F short term.AllInconel construction makes them suitable for highly corrosive gas orliquid environments, and radiation environments.Kaman’s extreme sensing systems use a dual-coil sensor design to minimizeboth thermal and radiation effects. The common mode rejection provided bythe symmetrical design of the dual coils compensates for constant andslowly changing temperatures from -320°F to +77°F or from 77°F to +1000°F.Measurement quality is unaffected by most corrosive gasses and liquids andmost other environmental contaminants such as oil, dirt, radiation, andstray RF and magnetic fields.All of Kaman’s high-temperature transducers are made with sealed, alllaser-welded Inconel housings and use metal-jacketed, mineral-insulatedcable. The sensors use the versatile Kaman KDM-8200 family of signalconditioning electronics. Single- and multiple-channel systems areavailable in NEMA enclosures or bench-top/ rack-mountable Euro-formatenclosures.  Options are available with and without power supplies anddigital displays.These high-temperature products were initially designed to measure steamturbine shaft runout in nuclear power plants.  They have also been used tomeasure nuclear fuel rod vibration, shaft vibration/run-out in rocketengine liquid fuel pumps, chemical processes, research projects, andhigh-temperature processing.