Features and Benefits One piece design with integral thermal barrier Sinter bonded flame arrestor provides superior EMI protection 316 stainless steel housing Excellent impact and vibration resistance Standard poison-resistant performance rating FM/CSA/ATEX/IECEx/Brazilian Approvals Compatible with all Det-Tronics combustible gas transmitters and controllers Sensor Separation Termination Box (STB) options available Extended operating temperature range Comprehensive list of conversion K factors for proper calibration available 3/4 inch NPT, 20 mm, or 25 mm thread types Six inch or optional 30 inch wire lead lengths Constant voltage or constant current sensor types available SIL2 certified to IEC61508 by exida® when used with UD10 SIL2 models.