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                                          Advanced Specialty Gas Equipment

                                          VARIABLE AREA FLOWMETERS
                                          Series 50 and 50K

                                          65 MM, Direct Reading, Flowmeters

                                          Series 50 FlowmeterSeries 50 flowmeters offer an economical means of measuring gas or liquid flow at low pressures where ± 10% accuracy is acceptable. They are suitable for plant and general laboratory applications. These flowmeters are direct reading for air; however, approximate flow ranges for other gases are listed in the Tube Selection.

                                          Standard Features
                                          • Ribbed Tubes stabilize float and improve accuracy and readability.
                                          • Borosilicate Glass Tubes allow operating temperatures up to 250°F (100°F for Series 50K).
                                          • Threaded Fittings with Locking Nuts (Standard on Series 50) permit front panel mounting.*
                                          • Unique Valve Design allows bubble-tight shutoff.
                                          • Availability of Aluminum, Stainless Steel or Kynar® Construction provides a wide material selection for maximum gas compatibility.
                                          Optional Features
                                          • Baseplate with Leveling Screws permits bench use.
                                          • Aluminum Bezel permits flush panel mounting.
                                          • Inlet Filter traps foreign matter, extends flowmeter life and reduces maintenance.
                                          * Series 50K Flowmeters may be front panel mounted using predrilled holes on rear of flowmeter and self-tapping screws.

                                          Specifications
                                          Maximum Operating Pressure and Temperature:
                                            50: 200 psig at 250°F
                                            50K: 150 psig at 100°F

                                          Minimum Operating Temperature: 32°F

                                          Accuracy: ± 10% of full scale from 10%
                                             to 100% of range

                                          Repeatability: Within 0.5% of full scale

                                          Tube Graduations: Standard cubic
                                            centimeters per minute or standard
                                            liters per minute of Air depending
                                             upon range.

                                          Scale Length: 65 mm

                                          Inlet and Outlet Connections:
                                            50: 1/8" NPT female
                                            50K: 1/4" NPT female

                                          Approximate Weight: 0.75 lb

                                          FM 4711 Optional Panel Mounting BezelMaterials of Construction
                                          Tubes: Borosilicate Glass with float
                                             stops of PTFE
                                          Floats: Borosilicate Glass, Type 316
                                            Stainless Steel or Carboloy
                                             as specified
                                          End Blocks
                                          Inlet/Outlet Adaptors
                                          Side Plates: Aluminum
                                          Back Plate: White Plastic
                                          Front Plate: Clear Plastic
                                          Seals and Packing: Viton®
                                             (other materials  available on
                                             special order)
                                          Valve: Type 316 Stainless Steel

                                           

                                           

                                           

                                          Optional Equipment

                                          Equipment Part No.
                                          Baseplate FM4702
                                          Inlet Filter, 2 micron  
                                            Aluminum FM4741
                                            Type 316 Stainless Steel (Series 50) FM4746
                                            Type 316 Stainless Steel (Series 50K) SG6113
                                          Aluminum Bezel for Flush Panel Mounting FM4711
                                          Replacement Metering Valves  
                                            Flowmeters with Tube Numbers FM4340 – FM4344 0202-4113 (L)
                                            Flowmeters with Tube Numbers FM4345 – FM4346 0202-4114 (M)
                                            Flowmeters with Tube Numbers FM4347 – FM4349  0202-4115 (H)
                                          Replacement Tubes 
                                           

                                           

                                          Table I
                                          Series Part No. End Blocks Material Inlet/Outlet
                                          Adaptor Material
                                          50 FM4350-( ) Aluminum Aluminum
                                          50 FM4360-( ) Type 316 Stn. Stl. Type 316 Stn. Stl.
                                          50K FM4451-( ) Kynar® None
                                          Where "( )" is indicated above, complete the part number by inserting applicable tube number from Tube Selection
                                          Table below. Example: FM4350-5. Order by complete part number.

                                          Tube selection tables for series 50 and 50K Flowmeters
                                          Flow rates shown are at 70°F and 14.7 psia.

                                          Tube No. Float Material Air
                                          (Actual Graduations)
                                          Argon*
                                          (Approx. Range)
                                          Carbon Dioxide*
                                          (Approx. Range)
                                          Helium*
                                          (Approx. Range)
                                          0 Glass 8.0–50 sccm 8.0–50 sccm 8.0–50 sccm 4.7–47 sccm
                                          1 Glass 5.0–85 sccm 7.1–71 sccm 10.4–104 sccm 7.9–79 sccm
                                          2 Glass 40–440 sccm 38–375 sccm 36–355 sccm 52–513 sccm
                                          3 316 Stn. Stl. 100–950 sccm 81–808 sccm 77–767 sccm 0.15–1.5 slpm
                                          4 Glass 0.2–1.8 slpm 0.15–1.5 slpm 0.16–1.6 slpm 0.38–3.8 slpm
                                          5 316 Stn. Stl. 0.4–3.6 slpm 0.31–3.1 slpm 0.32–3.2 slpm 0.78–7.8 slpm
                                          6 Glass 0.5–7 slpm 0.6–5.9 slpm 0.6–5.9 slpm 1.55–15.5 slpm
                                          7 316 Stn. Stl. 1.0–13 slpm 1.1–11.1 slpm 1.1–10.9 slpm 3.1–30.6 slpm
                                          8 316 Stn. Stl. 6.0–24 slpm 2.1–20.5 slpm 2.0–20.1 slpm 5.7–56.4 slpm
                                          9 Carboloy 4.0–44 slpm 3.8–37.4 slpm 3.6–36.3 slpm 10.4–103 slpm

                                           

                                          Tube No. Hydrogen*
                                          (Approx. Range)
                                          Nitrogen*
                                          (Approx. Range)
                                          Oxygen*
                                          (Approx. Range)
                                          0 10.5–105 sccm 5.1–51 sccm 4.5–45 sccm
                                          1 17.8–178 sccm 8.7–87 sccm 9.3–93 sccm
                                          2 0.1–1.1 slpm 45–449 sccm 41–411 sccm
                                          3 0.3–2.8 slpm 97–969 sccm 88–884 sccm
                                          4 0.6–6.0 slpm 0.2–1.8 slpm 0.2–1.7 slpm
                                          5 1.2–12.0 slpm 0.4–3.7 slpm 0.3–3.4 slpm
                                          6 2.4–23.8 slpm 0.7–7.1 slpm 0.8–8.2 slpm
                                          7 4.6–45.8 slpm 1.4–13.2 slpm 1.6–15.5 slpm
                                          8 8.5–84.5 slpm 2.5–24.5 slpm 2.9–28.7 slpm
                                          9 15.5–155 slpm 4.5–44.9 slpm 5.3–52.4 slpm
                                          * Series 50 flow tubes are directly calibrated for air at 70°F and 14.7 psia. Flow rates shown for other gases are for reference purposes only. Flow capacities for gases not listed may be obtained by contacting your Advanced Representative.

                                           

                                          Replacement Tubes
                                          and Packing Part No.
                                          FM4340 Replacement Tubes and Packing Parts
                                          FM4341
                                          FM4342
                                          FM4343
                                          FM4344
                                          FM4345
                                          FM4346
                                          FM4347
                                          FM4348
                                          FM4349
                                           

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