20 to 60 mm range, ?15 to 125 °C, 1.5 tesla.The LS121 air-gap sensor is a high-quality, high-reliability air-gap sensor for use with an ILS731 signal conditioner, which provides voltage outputs and a current output.The LS121 is designed and built for long-term use in extreme environments characterised by high temperatures and/or high-strength magnetic fields.FeaturesDesigned for the contactless measurement of the air-gap between rotor and stator in hydroelectric generators, and large alternators and motors20 to 60 mm linear measurement range (15 to 65 mm)?15 to 125 °C operating temperatureWithstands magnetic fields up to 1.5 teslaIntegral cable length of 5 or 10 m