Specifically designed for hazardous locations certified by UL, cUL (US and Canada and CENELEC Europe)Compact, versatile sensor will sense the thinnest and clearest films, as well as most opaque websImmune to web plane changes and unaffected by optical variation or ambient light, including sunlightNo special sensor orientation is required to avoid the effect of standing wavesTemperature compensated, microprocessor-based designClosed-face transducer - splash proofCompatible with all Fife Web Guide ControllersStandard sensing gap of 50.8 mm (2 inches) with a control range of 7.62 mm (0.3 inch)Flexible mounting and positioning assemblies ensure quick and easy installationElectrostatic discharge protectionFife SE-31 Intrinsically Safe Ultrasonic Sensor SpecificationsLinearity5% nominal maximum errorPlane Change5% nominal maximum errorPower Requirements+12 VDCOutput Rate0 to 10 mAUpdate Rate3 msWeight432.1 gramsTemperature Range5 to 60? C