Samson 3730-2 Electro Pneumatic Positioner

The positioner ensures a predetermined assignment of the valve position (controlled variable x) to the input tw). It compares the input from a control system to the travel or rotational angle of the control valve and issuesa corresponding output /span>

Application

Single-acting or double-acting positioner for attachment to pneumatic control valves. Self-calibrating, automatic adaptation to valve and actuator.Set point 4 to 20 mAValve travel 3.6 to 300 mmOpening angle 24 to 100°

Technical data for Type 3730-2 Positioner

Type 3730-2 Positioner The technical data for the explosion-protected devices may be restricted by the limits specified in thetest certificates.Valve travel Adjustable Direct attachment to Type 3277 Actuator 3.6 to 30 mmAttachment according to IEC 60534-6 (NAMUR) 3.6 to 300 mmAttachment according to VDI/VDE 3847 3.6 to 300 mmAttachment to rotary actuators (VDI/VDE 3845) 24 to 100° opening angleTravel range Adjustable Adjustable within the initialized travel/angle of rotation of the valve; travel can be restricted to 1/5 atthe maximum.Set point w o 20 mA · Two-everse polarity protection Minimum span 4 mAStatic destruction limit 100 mAMinimum current 3.6 mA for display · 3.8 mA for operationLoad impedance Without explosion protection: ≤6 V (corresponds to 300 Ω at 20 mA) · Explosion-protected versions:≤7 V (corresponds to 350 Ω at 20 mA)Supply airSupply pressure 1.4 to 7 bar (20 to 105 psi)Air quality acc. toISO 8573-1Max. particle size and density: Class 4 · Oil content: Class 3 · Pressure dew point: Class 3 or at least 10K below the lowest ambient temperature to be expected(output) 0 bar up to the capacity of the supply pressure · Can be limited to 1.4 bar/2.4 bar/3.7 bar ± 0.2 bar