Intrinsically Safe Replacement Sensor is certified for use in Class I Division II hazardous locations. The Xentaur Hyper-Thin-Film (HTF) AL2O3 Moisture Sensor Technology model XDT uses a Xentaur HTF Aluminum Oxide sensor. The Sensor Element XTR-65 Range: (-65ºC to 20ºC dp) Encapsulated in 100-micron sintered SS. The Standard Sensor Fitting 500psi / 34 bar 3/4″-16 & 14mm x 1.25mm Threads. It features high capacitance response, interchangeable sensor, and advance mechanical sensor design.