1 Compatible with Argon (Ar) and Carbon Dioxide (CO2) Mixed Gas PFM 7 X731 X731 Symbol Gas ratio Model PFM710 Rated flow range Displayable range Ar 92% 90% 80% 70% 60% 92% 90% 80% 70% 60% 92% 90% 80% 70% 60% 92% 90% 80% 70% 60% 8% 10% 20% 30% 40% 8% 10% 20% 30% 40% 8% 10% 20% 30% 40% 8% 10% 20% 30% 40% 0.2 to 7.0 L/min 0.5 to 25.0 L/min 0.5 to 20.0 L/min 1.0 to 50.0 L/min 1.0 to 40.0 L/min 2 to 100 L/min 2 to 90 L/min 2 to 80 L/min 0.2 to 7.4 L/min 0.5 to 26.3 L/min 0.5 to 21.0 L/min 1.0 to 52.5 L/min 1.0 to 42.0 L/min 2 to 105 L/min 2 to 95 L/min 2 to 84 L/min PFM725 PFM750 PFM711 CO2 Settable range Max. analog output Voltage (Vmax) Current (Imax) 0 to 7.4 L/min 0 to 26.3 L/min 0 to 21.0 L/min 0 to 52.5 L/min 0 to 42.0 L/min 0 to 105 L/min 0 to 95 L/min 0 to 84 L/min 3.80 V 5.00 V 4.20 V 5.00 V 4.20 V 5.00 V 4.60 V 4.20 V 15.2 mA 20.0 mA 16.8 mA 20.0 mA 16.8 mA 20.0 mA 18.4 mA 16.8 mA 7 Integrated display The argon.carbon dioxide gas ratio (Ar: CO2) can be selected using the push-buttons from among the following: 92 : 8, 90 : 10, 80 : 20, 70 : 30, and 60 : 40. Dimensions are same as those of standard models. Analog voltage output (1 to 5 V) 5 Vmax 1 0 0 0 When dry air selected Max. rated flow value When mixed gas selected Max. rated flow value Analog current output (4 to 20 mA) 20 Imax 4 0 When dry air selected Max. rated flow value When mixed gas selected Max. rated flow value Output characteristics using mixed gas PFM7-X731 Digital Flow Switch Made to Order Specifications Please contact SMC for detailed specifications, lead times and prices. For details of How to Order, refer to page 97. Analog output [V] Analog output [mA] 101