THE INSIDE STORY OF THE F-SERIES: Response Time < 10ms Analog Output = Measured Flow Analog Differential Pressure Sensor for Real Time Measurement Many Connector Options Pressure Compensated Option Available No Lead in Pipe Required Venturi Style Orifice Available in Seven Different Pipe Sizes No Moving Parts Wide range of inert gases Mounts in Any Position Flow Ranges as low as 2-20 SCFH & as high as 25-250 SCFM FUNCTIONAL DESCRIPTION Proportion-Air’s F-Series is a line of flow transducers designed specifically to provide real time flow measurement of compressed gasses for many demanding applications....

Flow (Percent ) Proportion-Air’s F-Series product is available in flow ranges from as low as 2 to 20SCFH and as high as 25 to 250S CFM. Pipe sizes range from ¼ “ to 1 ½”. Both NPT and BSP threads are available. The differential pressure technology incorporated in Proportion-Air’s F-Series flow transducer is ideally suited for rugged commercial and industrial applications. This technology allows measurements of flows from 10% to 100% of the maximum calibrated range. The benefits of real time measurement make the F-Series a must in many rapid sequence applications. For example, in the chart below,...

F-SERIES GENERAL SPECIFICATIONS & PERFORMANCE CHARACTERISTICS ELECTRICAL MAXIMUM INLET PRESSURE ¹ CALIBRATED FLOW RANGE ACCURACY REPEATABILITY RESPONSE TIME SHOCK RATING TURNDOWN RATIO ² END CONNECTIONS (PORT SIZE) See CHART 1 +/- 4% F.S. +/- 0.25% F.S. < 10 ms 25 G’s 10 to 1 1/4”, 3/8”, 1/2”, 3/4”, 1”, 1-1/4”, 1-1/2” NPT or BSPP Elastomers - Buna-N Manifold - Aluminum anodized Transducer - Silicon, Aluminum Power Requirement Supply Current Analog Output Voltage Current Sinking Sourcing ¹ FP Model with set pressure less than 100 psia, have a maximum inlet pressures less than 165 psia. ² Turndown...

F-SERIES PERFORMANCE CHARACTERISTICS CHART 1 Port 1/2 Size (inch) Maximum Flow SCFM (Liters/Sec) Port Selection Based on Maximum Flow Output Signal [Volts] This chart shows linear characteristics of the F-Series flow monitor with a signal output of 1-10 volts. Characteristics would be similar for 5. 6-20 mA units. Use CHART 1 to select the appropriate port size based on your applications maximum flow. NON-PRESSURE COMPENSATED This graph illustrates the effect of varying supply pressures on the flow output signal of an FR model flow transducer. This graph can be used to correct for variations...

F-SERIES TYPICAL APPLICATIONS RADIATOR TESTING Quick Disconnect Automotive Radiator To quickly determine that the flow passages of the radiator are adequately formed, the radiator is connected to a regulated supply and the F-Series provides immediate flow rate. COMPRESSOR TESTING FA-Series To rapidly plot compressor performance curves, a QB1 controls variable pressure while the F-series measures the flow rate BRF-SERIES0105E * PROPORTION-AIR * LET’S TALK 317-335-2602 HP-Backpressure Regulator

F-SERIES DIMENSIONS DIMEN SIONS ARE FOR REFERENCE USE ONLY Inches ORDERING INFORMATION SERIES TYPE N THREAD N = NPTF B = BSPP A = Atmosphere P = Pressure Compensated 2 = 1/4” R = Regulated Pressure 3 = 3/8” 4 = 1/2” 6 = 3/4 “ 8 = 1” D = Digital display A = 1-1/4” BLANK = No dis play B = 1-1/2” MEDIA OUTPUT SIGNAL A = Air N = Nitrogen H = Helium R = Argon C = Carbon diox ide ¹ Set pressure is based on the TYPE of the F-Series Flow Monitor: TYPE SET PRESSURE A 0 psig P Max imum system pressure, psia R Required regulated supply pressure, psig FLOW UNITS A = SCFM B = SCFH C = SLPM D = SLPH ELECTRICAL...

CLOSED LOOP FLOW CONTROL OPTIONS F-Series flow monitor coupled to various Proportion Air, Inc controls to provided closed loop flow control. F-Series with QB/PSR ASSEMBLY FLOW CONTROL A PPLICATIONS UP TO 250 SCFM DF-Series with FQB3 FLOW CONTROL A PPLICATIONS UP TO 30 SCFM DF-Series with FQPV FLOW CONTROL A PPLICATIONS LESS THAN 1 SCFM