The PFM series from SMC are dual flow switches designed to detect microchip component adsorption in vacuum, congestion in filters and nozzles. Compact and light weight design, suitable for use with carbon dioxide, air, nitrogen or argon.Flow rate range: 10, 25, 50,100 l\/min. Minimum unit setting: 0.01 l\/min. Repeatability: ±1%F.S. or less. Grease-free. Flow adjustment valve is integrated - reduced piping and space saving. Response time can be setMaximum Flow Rate = 1 - 50 L\/minControl Output = PNPMounting Style = CompactSupply Voltage = 24 V dcDisplay Screen = 3 Digit 7 Segment LEDPipe Diameter Range = 1\/8 inMinimum Operating Temperature = 0°CMaximum Operating Temperature = +50°CCAD Drawing = 3D CAD Model