SITRANS P DS III, HART, 4-20 MA transmitter for absolute pressure from differential pressure transmitter series .Measuring cell filling silicone normal cleaning Span 8,3 to 250 mbar a (0.12 to 3.63 psi a), max. static pressure 32 bar a Diaphragm monel, parts of measuring cell monel Process connection: 1/4-18 npt mounting thread: 7/16-20 unf and side vent/drain Die-cast aluminium housing, process flange bolts stainless steel Standard design . None explosion protection Electric connection and cable inlet: cable gland 1/2-14 npt Housing cover with window customised adjustment supplement Y21 required