Fema Differential pressure switch (Ex-d) for liquid, gas (Ex-DDCM) Differential pressure switch for Ex-applications. Degree of Ex-protection: Ex II 2G Ex d e IIC T6 Gb and Ex II 1/2D Ex ta/tb IIIC T80 oC Da/Db For flow monitoring and differential pressure control of steam, gas, hot/cold water and automatic checking of filter plant. Kind of pressure: differential pressure, relative Pressure connection: internal thread G1/4 Electrical connection: terminal connection M16x1,5 Protection class: IP65 Housing material: rugged housing of seawater resistant aluminium die casting GD Al Si 12 Media temp.: -15...60C Media temp. limit: Higher temperatures are possible, provided that the limit is safeguarded by suitable measures (e.g. water tube trap, see Accessories for Pressure Switches / Transmitters) Ambient temperature: -15...60C Ambient temp. limit: at temperatures below 0 oC, ensure that no water condensation can arise in the sensor and in the switching device Switch function/capacity: SPDT Microswitch; capacity 2 A inductive, 3 A resistive Certificates: SIL2 according IEC 61508-2 IBExU12ATEX1040 according to ATEX 2014/34/EU IECEx IBE 14.0077