User Manual - Controls Warehouse
Contents
1. FLUID SELECTION CHART External Body Pressure Dust Guards Material Seals Correction i Fluid Specific Gravity Factor of Standard Scale E 5 2 El 9 8 8 5 2 Es 2 E gt gt amp Air 1 00 1 000 R R R R R R R R R Argon A 1 38 1 175 R R R R R R R R R Carbon Dioxide 1 53 1 237 R R R R R R R R R Freon 11 CCIF 4 92 2 218 R R R R R R R R R Freon 12 CCI F 4 26 1 060 R R R R R R R R R Helium HE 0 14 0 374 R R R R R R R R R Hydrogen H 0 07 0 265 R R R R R R R R R Natural Gas 0 60 0 775 C C R C R N C R R Nitrogen N 0 97 0 985 C C R R R R R R R Oxygen 1 10 1 049 R R R R R R R R R Propane C H 1 57 1 253 R R R R R R N R R R Recommended N Not Recommended C Consult Factory Table 4 Fluid selection chart Stainless Steel Stainless Steel TEMPERATURE DERATING CURVES 0 100 200 300 400 500 CONTINUOUS TEMPERATURE EU INTERMITTENT TEMPERATURE Figure 9 Pressure vs temperature chart Page 12 VAM UM 00593 EN 02 August 2014 Flow vs Pressure Drop FLOW VS PRESSURE DROP Air Compressed Gases 25 PRESSURE DROP PSI PRESSURE DROP PSI 0 5 10 15 20 25 30 0 25 50 75 100 125 150 FLOW SCFM FLOW SCFM 20 30 5 100 1000 o o a Eo a 80 800 t t a E tt 60 600 S 210 o o m 5 40 400 tc n Zn2. 60 600 5 gt 10 o p e 5 40 400 tc tc pd 0 50 100 150 200 250 1 0 200 400 600 800 1000 FLOW SCFM FLOW SCFM Figure 12 Caustic air and corrosive gas flow vs pressure drop Page 14 VAM UM 00593 EN 02 August 2014 Specifications SPECIFICATIONS Standard 20 240 F 29 116 C Temperature Range Hostile environment 20400 29 205 Continuous 9 i 400 500 205 260 C Intermittent See Pressure vs temperature chart on page 12 for more information 1000 psi 69 bar maximum 3 Sizes 250 psi 17 bar maximum Aluminum brass models Pressure Rating 10 1 safety factor Stainless steel models 1500 psi 103 bar maximum Test kit models Aluminum brass SS 600 psi 41 bar maximum Pressure Drop See Flow vs Pressure Drop on page 13 for specific meter information Accuracy 2 of full scale Repeatability 1 Threads SAE J1926 1 NPTF ANSI B2 2 BSPP ISO1179 BSPT BS21 0 160 psi 0 10 bar Test Kit Load Valve Ball valve with chrome plated brass ball and Teflon seals Materials of Construction Basic Flow Meters and Test Kits Indicator Guard Spider Pressure Retaining Retaining Scale End Spring Fasteners Guard 6 amp Internal Seal Plate Seals Ring Spring Support Caps Magnet Bumper Body Piston Cone 2024 T351 Anodized
3. Aluminum C30 Brass Poly PPS 6063 T6 Nylon 131655 T302SS 130355 Viton 131655 T316SS B N 2024 T351 carbonate Ceramic Aluminum ST 130355 Anodized Aluminum 1 3 Models have Celcon piston piston ring 3 Models not available in T303SS Table 5 Basic flow meters and test kits Caustic and Corrosive Air and Gases Standard Model E uF Indicator Guard Spider Pressure Retaining Retaining Scale End Body Piston Cone Spring Fasteners Guard amp Internal Seal Plate Seals Ring Spring Support Caps Magnet Bumper Poly PPS 6063 T6 Nyl 131655 131655 131655 131655 Viton oy 181655 131655 BunaN A carbonate Ceramic Aluminum ST Table 6 Caustic and corrosive air and gases standard Caustic and Corrosive Air and Gases Hostile Environment Model Spider Pressure Retaining Retainin Indicator Scale End Body Piston Cone p Spring Fasteners Guard 9 9 amp Internal Bumper Plate Seals Ring Spring Support Caps Magnet Indicator 141655 Cylindrical 131655 131655 131655 131655 Viton Pyrex 131655 131655 131655 131655 131655 E Teflon Glass Coated Alnico 8 Table 7 Caustic and corrosive air and gases hostile August 2014 VAM UM 00593 EN 02 Page 15 Dimensions DIMENSIONS Standard Meters A B B C D E F G Nominal
4. M xico Badger Meter de las Americas S A de C V Pedro Luis Ogaz n N 32 Esq Angelina N 24 Colonia Guadalupe Inn CP 01050 M xico DF M xico 52 55 5662 0882 Europe Middle East and Africa Badger Meter Europa GmbH Nurtinger Str 76 72639 Neuffen Germany 49 7025 9208 0 Europe Middle East Branch Office Badger Meter Europe PO Box 341442 Dubai Silicon Oasis Head Quarter Building Wing C Office 209 Dubai UAE 971 4 371 2503 Czech Republic Badger Meter Czech Republic s r o Ma kova 2082 26 621 00 Brno Czech Republic 420 5 41420411 Slovakia Badger Meter Slovakia s r o Racianska 109 B 831 02 Bratislava Slovakia 421 2 44 63 83 01 Asia Pacific Badger Meter 80 Marine Parade Rd 21 06 Parkway Parade Singapore 449269 65 63464836 China Badger Meter 7 1202 99 Hangzhong Road Minhang District Shanghai China 201101 86 21 5763 5412 Legacy Document Number 04 VAM UM 00225
5. Retaining Ring 43 End Cap Spring Piston Assembly Internal Magnet Metering Cone Spider Plate Wave Spring Pressure Seal End Fitting Figure 1 Inline pneumatic flow meter Page 4 VAM UM 00593 EN 02 August 2014 Installation INSTALLATION THIS PRODUCT SHOULD BE INSTALLED AND SERVICED BY A TECHNICALLY QUALIFIED PERSONNEL TRAINED IN MAINTAINING INDUSTRIAL CLASS FLOW INSTRUMENTATION AND PROCESSING EQUIPMENT READ INSTRUCTIONS THOROUGHLY BEFORE INSTALLING THE UNIT IF YOU HAVE ANY QUESTIONS REGARDING PRODUCT INSTALLATION OR MAINTENANCE CALL YOUR LOCAL SUPPLIER FOR MORE INFORMATION THIS METER MAY CONTAIN RESIDUAL AMOUNTS OF TEST FLUID AT THE TIME OF SHIPMENT THIS FLUID SHOULD BE REMOVED PRIOR TO INSTALLATION AS THE FLUID MAY BE INCOMPATIBLE OR HAZARDOUS WITH SOME LIQUIDS OR GASES FAILURE TO FOLLOW THESE INSTRUCTIONS COULD RESULT IN DAMAGE TO THE EQUIPMENT THIS STANDARD METER IS UNIDIRECTIONAL ATTEMPTS TO FLOW FLUIDS IN THE OPPOSITE DIRECTION OF THE FLOW ARROW WILL RESULT IN THE METER ACTING AS A CHECK VALVE CREATING A DEADHEADING SITUATION IF THE DIFFERENTIAL PRESSURE MAGNITUDE IS GREAT ENOUGH DAMAGE TO THE INTERNAL PARTS OF THE METER WILL m c n ALINE SNUBBER IS RECOMMENDED FOR APPLICATIONS IN WHICH RAPID VALVE ACTUATION OR PULSATION IS ANTICIPATED THIS NOT ONLY REDUCES THE RISK OF DECOUPLING THE FLOW METER S MAGNETIC PISTON IT ALSO REDUCES EXCESSIVE WEAR ON OTHER COMPONENTS IN THE
6. 0 50 100 150 200 250 200 400 FLOW SCFM FLOW SCFM 20 100 1400 200 2200 15 n 2 0 tr 2 Q5 a n 0 500 1000 1500 2000 2500 FLOW SCFM Figure 10 Air and compressed gases flow vs pressure change 1 The pressure drop curves are valid for fluids with density and viscosity similar to factory test fluids Fluids especially with higher viscosity than these test fluids will yield a higher pressure drop through the flow meter and piping system per a given flow volume 2 Asystem must have adequate fluidic horsepower available to move the system fluid at a prescribed rate at a pressure adequate to overcome all pressure reducing devices including the flow meter August 2014 VAM UM 00593 EN 02 Page 13 Flow vs Pressure Drop Air Compressed Test Kits 25 PRESSURE DROP PSI PRESSURE DROP PSI 0 5 10 15 20 25 30 0 25 50 75 10 15 150 FLOW SCFM FLOW SCFM 20 30 100 1000 34 1 5 EMA A D o a 20 E o c tc 15 E ul tc gt 10 2 o o 0 5 tr tc n 0 50 100 150 200 250 0 FLOW SCFM FLOW SCFM Figure 11 Air and compressed gasses flow vs pressure drop test kits Air Caustic and Corrosive Gases 25 j 20 g 5 n 07 15 a fe 10 E o 0 5 ul 5 ul tc tc n n 0 5 10 15 20 25 30 0 25 50 75 100 125 150 FLOW SCFM FLOW SCFM 20 30 100 1000 25 1 14 1 12 o o o amp a 20 oa o 80 800 tt at
7. 25 32 5 40 137 3 4 SAE 12 7 20 183 8 90 226 2 48 63 2 85 72 1 24 32 1 50 38 5 90 150 1 SAE 16 7 20 183 8 90 226 2 48 63 2 85 72 1 24 32 1 75 44 5 90 150 1 1 4 SAE 20 12 20 310 13 80 351 4 12 105 4 72 120 2 06 52 2 75 70 7 20 183 1 1 2 SAE 24 12 20 310 13 80 351 4 12 105 4 72 120 2 06 52 2 75 70 7 20 183 August 2014 Table 9 Test kit dimensions Figure 15 Test kit dimensions VAM UM 00593 EN 02 Bi Ref Dim mom Page 17 Variable Area Flow Meters Inline Pneumatic Flow Meter INTENTIONAL BLANK PAGE Page 18 VAM UM 00593 EN 02 August 2014 User Manual INTENTIONAL BLANK PAGE August 2014 VAM UM 00593 EN 02 Page 19 Variable Area Flow Meters Inline Pneumatic Flow Meter Control Manage Optimize HEDLAND is a registered trademark of Badger Meter Inc Other trademarks appearing in this document are the property of their respective entities Due to continuous research product improvements and enhancements Badger Meter reserves the right to change product or system specifications without notice except to the extent an outstanding contractual obligation exists 2014 Badger Meter Inc All rights reserved www badgermeter com The Americas Badger Meter 4545 West Brown Deer Rd PO Box 245036 Milwaukee 53224 9536 800 876 3837 414 355 0400
8. Hedland Variable Area Flow Meters Variable Area Flow Meters Area Flow Meters Inline Pneumatic Flow Meter gt Badger Meter VAM UM 00593 EN 02 August 2014 U S e r M a n u a Variable Area Flow Meters Inline Pneumatic Flow Meter CONTENTS 3 Operating Principle is ey ratae EROR Y ce aed Fae OR Rd E p LAU CRURA dew a B 4 hdgcsl n PETIT 5 Comipressibility of Gases x asc RUE AO A E C Es 5 Installation Recommendations saa descen ier once Pe b Ue eo e Md ey don eee qe dev ak d Ow done eae 6 Installing the Flow Meter cis ous aad kOe EUR xk X X x EG X E HERE KS EERTE EE EERDE REER 6 Installing the Test Kit Flow Meter s anres sma m hh hh hrs 8 zs E a Beh qued a qued Rd qu NuUa que RS SHE Re coh a Na qus COS RUN xu acis 9 Multi Pressure Flow Scales wee cR ROC Roy RD RO RR deo Ho Ro a OR a d te ca ORC A 9 Single Pressure Flow Scales as erana pex pw y EVE hahaa EY ge a 9 Application Infoeriatloh asta css qux dumme x Ren dE STRADE AER RU Oe edes d 10 Maintenance uua rapa pg UY PE
9. Length Length Width Depth Offset Flats Height Port Size in mm in mm in mm in mm in mm in mm in mm 1 4 SAE 6 4 80 122 6 12 155 1 68 43 1 90 48 0 82 21 0 88 22 5 00 127 1 2 SAE 10 6 60 168 8 00 203 2 07 53 2 40 61 1 04 32 1 25 32 5 40 137 3 4 SAE 12 7 20 183 8 90 226 2 48 63 2 85 72 1 24 32 1 50 38 5 90 150 1 5 16 7 20 183 8 90 226 2 48 63 2 85 72 1 24 32 1 75 44 5 90 150 1 1 4 SAE 20 12 20 310 13 80 351 4 12 105 4 72 120 2 06 52 2 75 70 7 20 183 1 1 2 SAE 24 12 20 310 13 80 351 4 12 105 4 72 120 2 06 52 2 75 70 7 20 183 Table 8 Standard meters Standard Meter Standard Meter with EP amp EG Option Figure 13 1 4 to 1 1 2 inch models 3 inch SAE NPTF BSPT models inches mm 3 Ports 4 50 114 3 Across Flats 4 5 75 146 0 Dia 16 18 411 gt Figure 14 Three inche SAE NPTF BSPT models measurements in inches mm Page 16 VAM UM 00593 EN 02 August 2014 Dimensions Test Kits A B B C D E F G Nominal Length Length Width Depth Offset Flats Height Port Size in mm in mm in mm in mm in mm in mm in mm 1 4 SAE 6 4 80 122 6 12 155 1 68 43 1 90 48 0 82 21 0 88 22 5 00 127 1 2 SAE 10 6 60 168 8 00 203 2 07 53 2 40 61 1 04 32 1
10. bottom of the meter and slide the end cap dust bumper and the dust guard off the bottom of the meter taking care to avoid damaging the O ring seal between the end cap and the dust gland Quick Recoupling This piston type variable area flow meter is inherently less sensitive to shock and vibration than other variable area designs The unique magnetic coupling also eliminates the need for mechanical linkages that can wear or loosen over the functional life of the meter However on occasion a pressure spike or extreme flow surge can cause the piston to move at such rapid speed that it disconnects the piston magnet and the external indicator ring If this occurs use one of these procedures to re couple the magnet and the external indicator ring If the system permits simply change flow rate from no flow to full flow allowing the moving piston to magnetically re couple to the indicator ring For rigorous cyclical applications where decoupling may occur frequently consult the technical services Test Kit Maintenance Load Valve If the valve fails to load the system remove the valve body and check for foreign material worn parts or seals Flow The absence of any flow reading may indicate a seized piston assembly Remove any material that may be preventing the piston to slide If the Test Kit still fails to indicate flow return the Test Kit to the factory August 2014 VAM UM 00593 EN 02 11 Fluid Selection Chart
11. RK EER ERTS Rae ewe d RC x 11 Removal of Dust Guald emne Gd Rcs ee RON RUE Ge EUR Redi 11 OuickRecoupling OR A OR HER COE RE NR ARE UY CORRE SEER qr ep SE NC 11 Test Kit Maintenance Sa RR RR ROC CR ee 11 Fluid Selection Chart i HGR ae ee ERA RR REESE ae RARE E UE GEES eO EUER ROBA RUN EEE 12 Elow vs Pressure Drop a uem 4 0 40 tue Me aor e xUR sud RO REY Ge Se Ga ice 13 Air Compressed Gases sauce OE OR RUP RR ERG cha UR SUR AUR LG USA E dS ERR 13 Air Compressed Test Kits 4 ica RR me WAN BE Ua 14 Air Causticand Corrosive Gases i sos ce ce ee aa ee ROO ed RU ACER E NL d 14 Specifications exe ere daw o ie Scd aso eb e d Bae Rae Wa I o nee aoo HP eut ee o a 15 Materials of Construction 22 8 acad aer ce aha ed teach alee aoa A E ahaha E dU ACER Pha Hales d 15 DIMENSIONS Sa ls Dar hee we ew Ga a ee ew 16 Standard Meters itas Rane a RA ae qd aed aha ha Habs a 16 TESUKIES TD 17 Page ii VAM UM 00593 EN 02 August 2014 Introduction INTRODUCTION The Inline P
12. SYSTEM Compressibility of Gases Gases are significantly compressible so the density of any compressed gas will vary according to changes in operating pressure levels In other words volumetric flow rates will vary significantly with changes in line pressure Therefore pneumatic flow meters should be installed with a pressure gauge located as close as possible to the inlet port The psig range capacity of this pressure gauge should be at least 12596 of the anticipated pressure in the system or be suitable for the maximum expected line pressure if higher For example if the anticipated operating pressure is 100 psig a pressure gauge with a capacity of at least 125 psig should be installed as close as possible to the inlet port August 2014 VAM UM 00593 EN 02 Page 5 Installation Installation Recommendations The inline flow meter is a simple device to install However the following measures are recommended for reliable trouble free operation 1 Piping should be accurately aligned and of correct length The high pressure body of the flow meter can withstand shock and flow pressure pulsation However the piping should be firmly supported by external mounting brackets both upstream and downstream of the meter to avoid any pipe flexing actions that could reduce meter life 2 Ifthe flow meter inlet or outlet are to be rigidly mounted and the opposing port is to be connected to a flexible hose the end connected with the flexible hose m
13. emove the flow meter from the line Remove excess piping from meter NOTE Itis not necessary to remove the transparent dust guard from the meter to remove the meter from the line If you choose to remove the dust guard assembly see Removal of Dust Guard on page 11 2 Thoroughly wipe off the entire flow meter surface using mild detergent or isopropyl alcohol DO NOT USE AROMATIC HYDROCARBONS HALOGENATED HYDROCARBONS KETONES OR ESTER BASED FLUIDS ON POLYCARBONATE LENS FAILURE TO FOLLOW THESE INSTRUCTIONS COULD RESULT IN DAMAGE TO THE METER 3 Remove the inlet cap from the flow meter noting the sequence of disassembly for later reference 4 The internal parts are secured with a retaining ring Remove the retaining ring and the internal wetted parts from the flow meter NOTE If internal parts do not slide freely from flow meter use a wooden dowel inserted into the outlet port of the meter to push parts out Place all parts on a clean work surface Clean and inspect all parts Replace any that appear worn or damaged Check inlet port O ring for damage and replace if required Reassemble the spring the piston magnet assembly and the retaining ring into the flow meter Install the metering cone spider plate assembly and the retaining spring Secure with inlet cap Reinstall the meter to the line N Removal of Dust Guard To remove the dust guard for cleaning or replacement simply loosen the end fitting located at the
14. er 1 Mount the VA High Pressure Test Kit Flow Meter so fluid is traveling in the direction of the flow arrow See Figure 2 on page 6 2 Install the test kit at any location in the pneumatic circuit that is suitable for viewing To connect the test kit into the piping system place an open ended wrench onto the test kit extended cap on the inlet side or on the test kit wrench flat on the outlet side adjacent to the pipe connection being installed Do not wrench on the opposite end of the test kit or leakage may result See Figure 5 Place wrench on valve body on the same side plumbing is being tightened Never place wrench on valve body opposite plumbing being tightened Figure 5 Installing test kit Or use quick disconnect couplings for easy connections and to keep the test kit sealed and clean when not in use 3 After installation rotate the meter by hand to the view flow scale See Figure 6 Rotate meter by hand to view flow scale Never use wrench to rotate meter body when viewing flow scale Figure 6 Rotating test kit Page 8 VAM UM 00593 EN 02 August 2014 Operation OPERATION Multi Pressure Flow Scales The inline pneumatic flow meter is offered with a multi pressure flow scale to visually indicate air flow rates in standard cubic feet per minute scfm at 1 0 5 9 70 F at 100 psi or liters per second 5 at 1 0 5 9 21 C at 6 9 bar The multi pressure scale design allows for use at line pressures fr
15. es or malfunction 11 Do not allow unidirectional meters to be operated against the direction of the flow arrow The standard flow meter is an unidirectional flow meter The piston acts as a check valve to block flow in the reverse direction This causes an excessive pressure differential which can result in damage to internal meter components Installing the Flow Meter 1 Mount the meter so fluid is traveling in the direction of the flow arrow See Figure 1 on page 4 Flow Direction Arrow Figure 2 Flow direction arrow 2 Select a mounting location that is suitable for viewing and product service To connect the flow meter into the piping system place an open ended wrench onto the flow meter wrench flats adjacent to the pipe connection being installed DO NOT wrench on the opposite end of the flow meter or leakage may result See Figure 3 on page 7 6 VAM UM 00593 EN 02 August 2014 Installation Place wrench on meter flats on the same side plumbing is being tightened Never place wrench on meter flats opposite plumbing being tightened Figure 3 Installing meter 3 After installation rotate the meter by hand to the view flow scale See Figure 4 Rotate meter by hand to view flow scale Never use wrench to rotate meter body when viewing flow scale Figure 4 Rotating meter August 2014 VAM UM 00593 EN 02 7 Installation Installing the Test Kit Flow Met
16. neumatic Flow Meter is a rugged industrial class flow rate indicator and is offered in aluminum brass 1303 and 1316 stainless steel models to monitor pressurized air lines and a wide range of other compressed gases Available in seven port sizes from 0 25 3 inch for flow ranges from 0 5 5 scfm 0 2 2 2 l sec through 200 2200 scfm 75 1130 l sec meters are calibrated at 1 0 specific gravity In addition to the basic model the aluminum brass and T303 stainless steel models are offered in three configurations an extended inlet cap fitted with a pressure gauge an extended inlet cap with a 0 25 inch NPTF plugged gauge port and a test kit with an extended inlet cap fitted with a 160 psi pressure gauge and control valve on the outlet The Flow Meter is equipped with a 360 rotatable guard scale which allows the meter to be installed in any orientation without regard to scale direction Once the meter is permanently installed the guard scale can be rotated 360 to optimize readability The unique spring loaded design of this variable area flow meter allows it to be installed in any position including inverted without affecting accuracy An optional inverted scale is available for these applications Aluminum models are offered as a rugged low cost flow meter for monitoring noncorrosive pneumatic systems under operating pressures up to 1000 psi 69 bar 250 psi 17 bar for 3 models and 600 psi 41 bar for test kits Brass meters are rec
17. om 40 130 psi in 10 psi increments 3 0 9 0 bar in 1 bar increments This configuration requires that a pressure gauge be installed at the meter inlet Read the inlet gauge pressure then select the appropriate vertical line or interpolated value closest to the gauge reading and follow the line until it intersects the brightly colored horizontal indicator bar The flow rate is read by taking the intersection points following the slope of the closest diagonal line to a scale value and interpolating the scfm l sec flow rate No further calculations are required See Figure 7 SCFM 70 F INLET PRESSURE PSIG BRESeseees REEFRSRSRS HORIZONTAL di INDICATOR BAR X EX Figure 7 Multi pressure flow scale Single Pressure Flow Scales An optional single pressure flow scale is available in U S or metric units This graduated scale is calibrated for air in standard cubic feet per minute scfm at 1 0 s g 70 F at 100 psi or liters per second l sec at 1 0 s g 21 C at 6 9 bar See Figure 7 A standard cubic foot of air is defined as a cubic foot of air at 70 F at atmospheric pressure 14 7 psia at sea level Since it is impossible to flow air at standard conditions the scale is calibrated for an inlet condition of 100 psi 6 9 bar at 70 F 21 C A correction factor must be calculated to determine the actual air volume Each meter is supplied with the C
18. ommended for applications with operating pressures up to 1000 psi 69 bar without corrosion inhibitors Stainless Steel is available for monitoring systems operating at pressures up to 1500 psi 103 bar The T316 stainless steel models are recommended for monitoring caustic or corrosive gases such as hydrogen chloride or sulfur dioxide The T303 stainless steel test kit is rated to 600 psi 41 bar pressure rating is limited by the valve For further construction material information see Materials of Construction on page 15 August 2014 VAM UM 00593 EN 02 3 Operating Principle OPERATING PRINCIPLE The Flow Meter is a variable area instrument A sharp edged orifice located within the piston assembly forms an annular opening with the contoured metering cone The piston assembly carries a cylindrical PPS ceramic magnet that is magnetically coupled to an external indicating magnet which moves precisely in direct response to movement of the piston A calibrated spring opposes flow in the forward direction The Hedland variable area flow meters are the most readable products in their class Brightly colored indicators move over the graduated linear flow scale which contains bold easy to read numeral and gauge marks The enhanced resolution virtually eliminates parallax problems associated with competitive direct reading flow meters Guard Seal Bumper Flow Scale 48 Guard Orifice Flow indicator Body
19. onversion Chart see Conversion Chart on page 10 SCFM 100 PSIG 70 F August 2014 y b a 5 wu wu 25 S amp 20 8 a w AIR Figure 8 Single pressure flow scale VAM UM 00593 EN 02 Page 9 Operation Application Information Compressibility of Gases Gases are significantly compressible so their density varies with pressure and temperature Use Table 7 to convert indicated scfm flow rates to actual scfm flow rates for your application Effects of Specific Gravity Standard scales are calibrated for air with a specific gravity of 1 0 Use Table 3 of the conversion chart ito calculate actual scfm flow rates of gases with a specific gravity other than 1 0 Conversion Chart The conversion chart provides a series of simplified mathematical formulas to adjust the graduated scale for changes in pressure see Table 1 temperature see Table 2 or specific gravity see Table 3 Special scales can be made to accommodate other pressures temperatures and specific gravity The conversion chart can also be used to adjust the multi pressure flow scale to indicate flow rates in applications beyond the parameters stated on the scale To adjust for pressures beyond above or below scale limits 1 Locate point at which the brightly colored indicator line intersects the vertical 100 psig pressure line 2 Divide this reading by the pre
20. ssure correction factor f indicated in the conversion chart To adjust for changes in temperature 1 Divide the 100 psig flow rate reading by temperature correction factor To adjust for changes in specific gravity 1 Establish the square root of the new specific gravity 2 Divide the 100 psig flow rate reading by the specific gravity correction factor f psig 25 50 75 100 125 150 175 200 225 250 bar 1 7 3 5 5 2 6 9 8 6 10 4 12 1 13 8 15 5 172 kPa 172 345 517 689 862 1034 1207 1379 1551 1724 f 1 700 1 331 1 131 1 000 0 902 0 835 0 778 0 731 0 692 0 658 f 114 7 f 7 914 f 790 857 Tea T m 1 14 7 psig 1 014 BAR 101 357 kPa Table 1 Pressure correction factor F 10 30 50 70 90 110 130 150 170 190 C 12 2 1 1 909 21 0 32 1 43 54 65 76 88 f 0 942 0 962 0 981 1 000 1 018 1 037 1 055 1 072 1 090 1 107 460 F 273 C f2 530 293 Table 2 Temperature correction factor fas 5p Gr Table 3 Specific gravity correction factor Page 10 VAM UM 00593 EN 02 August 2014 Maintenance MAINTENANCE BEFORE ATTEMPTING TO REMOVE THE FLOW METER FROM THE LINE CHECK THE SYSTEM TO CONFIRM THAT LINE PRESSURE HAS BEEN REDUCED TO ZERO PSI FAILURE TO FOLLOW THESE INSTRUCTIONS COULD RESULT IN SERIOUS PERSONAL INJURY OR DEATH AND OR DAMAGE TO THE EQUIPMENT 1 R
21. ust be rigidly mounted 3 UseTeflon tape for sealing NPT fitting 4 Install a union near the inlet or outlet of the meter for quick easy meter removal and inspection during periodic maintenance procedures 5 Mount the meter either horizontally or vertically flow arrow pointing to either side or straight up If the meter must be mounted inverted special inverted scales are available 6 Ensure the fluid is traveling in the direction of the flow arrow see Figure 2 7 Systems that do not have filtration should be equipped with at least a 200 mesh 74 micron filter Most systems already have much finer filtration The meter will allow particulate to pass that would jam most valves and flow controls Dirt ferrous metal or sealing agents such as Teflon tape may lodge and cause malfunction If the meter is jammed at a fixed position see Removal of Dust Guard on page 11 8 Don not use thread locking compounds as thread sealant 9 Do not install the flow meter near turbulence producing fittings such as elbows reducers and close coupled valves for maximum reliability The inline flow meter does not require flow straighteners or special lengths of straight inlet outlet piping to stabilize turbulent flow patterns 10 Do not install the meter near fast acting valves Fast acting valves have the potential to create high magnitude hydraulic pressure spikes These spikes can damage the internal components of the meter resulting in inaccuraci
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