Diaphragm pressure switch LFS-03

differentialfor gasindustrial

LFS-03 can be is applied to detection positive or negative pressure. It can be used as a gauge or differential pressure switch with almost no hysteresis. If 2 switch points are required, 2 pressure switches with different calibrations should be employed. The method of fixing the tab terminals to the switch body does not allow for absolute air sealing. The switch is therefore not recommended for applications where static vacuum has to be maintained. However, special models with additional pressure spring which allow for the vacuum to be connected to the pressure inlet side are available on request. Model LFS-03 Electrical Function 1 pole NO 1 pole NC Switch Rating 1 pole NO: 2.5(0.5) A 250V~1E4 1 A250 V~5E4(max 800 mbar) 20 mA 250 V~5E4(max 800 mbar) 1 Pole NC: 2.5(0.5) A 250V~1E4 0.5 A250 V~5E4(max 800 mbar) 20 mA 250 V~5E4 Temperature Ambient: -10 to +85℃ Electrical Connections Tab terminals 6.4 x0.8 mm Tab terminals 4.8 x0.8 mm(1 pole NO only) PressureRange Pressure: +15 to +2500 mbar Tolerance: +/- 10% NO; +/- 15% NC Vacuum: -600 to -15 mbar Tolerance: +/- 15% Sample Line Connections Pressure and vacuum: Inlet 4.0 or5.5 mm(up to 500 mbar) Threaded inlet M10 x1 mmor 1/4 gas Switch hysteresis Almost no hysteresis Max. working pressure 3000 mbar Medium Non hazardous gas only Fixing Methods Plastics clips (version with inlet only) Materials Lower body: PA 66 Upper body: PA 66 Adjust. screw: PA 66 Contact carrying parts: Brass Silver plated (gold plating on request) Membrane: Nitrile, EPDM, (Silicone, Perbunan on request) according to application