SITRANS P420 Pressure transmitter Differential pressure and flow PN160 HART (4...20 mA) Measuring cell filling: Silicone oil Maximum measuring span: 1600 mbar (643 inH²O) Oval flange, fastening thread: 7/16-20 UNF (IEC 61518) Process connection: Stainless steel 316L/1.4404, Seal diaphragms: Stainless steel 316L/1.4404, Sensor differential pressure: Process flange: Stainless steel 316/1.4408 Die-cast aluminum housing Dual chamber device Intrinsic safety, Explosion proof, Dust ignition proof zone 21/22 (DIP), increased safety zone 2, class division 2 x 1/2-14 NPT With display (lid with glass window) Labeling type plate Spanish - bar Quality inspection certificate - 5 point factory calibration (IEC 60770-2) Inspection certificate (EN 10204-3.1) - material of pressure-containing and wetted parts Factory certificate (EN 10204-2.2) - wetted parts Degree of protection IP66 / IP68 (not for M12 and HAN plugs) FM (USA) Mounting bracket, stainless steel 1.4301/304 O-ring, process flanges, PTFE (Not permitted in case of double side mounted remote seal) Oval flange attached, PTFE seal + fastening screws Measuring range setting: Lower range value (max. 5 characters), Upper range value (max. 5 characters), Unit (mbar, bar, kPa, MPa, psi, ...) Example: -0.5 ... 10.5 psi (stainless steel plate) Display: (pressure. % of range). pressure reference (none. absolute. gauge). example: pressure gauge