User Manual - Badger Meter, Inc.
Contents
1. MODEL THROAT SIZE BETA RATIO 1 0 35 SSL VISSL Classical 2 0 49 SSM VISSM Nozzle 3 0 63 4 0 75 10 0 35 cata 20 0 49 LPL VILPL Low Loss 38 062 65 0 81 Minimum Recommended Pipe Diameters INSTALLATION DISTURBANCE 21 2 3 A 10 20 38 65 A B A 4 4 4 5 Single elbow Venturi B 2 2 2 2 es A 8 8 9 10 Two elbows in the same plane 3 j 3 3 a A 15 15 15 20 Two elbows in different planes B 4 4 4 q 1 5 to 3D 6 6 6 7 ee B A Sep B 2 2 2 2 Reducer 1D to 2D A aan 4 8 8 8 8 10 B 3 3 3 3 Expander p d or D a A HB A 8 8 8 10 T Tee connection with different diameters 5 i 2 3 E Al t A 6 6 6 3 Globe Gate valve fully opened B 3 3 3 3 8 A 12 12 14 18 Globe Gate valve partially opened B 3 3 3 3 FIGURE 1 Venturi Pipe Diameter Recommendations SSL SSM LPL VISSL VISSM and VILPL Models NOTES 1 For upstream and downstream lengths equal to one half the values shown add 2 percent to the accuracy value 2 Any flow conditioner shall be installed in the straight length between the primary element and the upstream distance or the fitting closest to the element The straight lengths between fitting and conditioner shall be at least 5D and the length between conditioner and Venturi meter shall be at least 8D 3 For other fittings configurations consult Preso 4 Reference ISO 5167 Flow Measureme2. g H I 3 Valve Manifold c di 5 Lau HI z Front View Side View FIGURE 7 Typical Vertical Installation for Gas Page 8 Form 4 20 23 11 10 Flow i Filling Crosses Fill with water to same level ta Gi eee ia A i bl SA A pe or Ie Manifold MECRRAdO made M i QO o y O RL f n ge I Ep real aL Se Front View Side View FIGURE 8 Typical Vertical Installation for Steam Line Installation AII flanged Venturi flow elements require a gasket between the process line connection and the mating flange Select gaskets that match the pressure rating ofthe Venturi flanges and resist corrosive attack of the process fluid Before completing the bolting process be sure that the gaskets are properly centered so that protrusion into the pipe opening is minimized Misalignment may cause added flow turbulence However performance effects are typically minimal depending upon the application Bolt the element in line with suitable hardware using recommended bolt torques for the type and class rating of the flan
3. Direct Read coe O 3 Valve Manifold A H By H o HI LO pleser tI IL 1K leon 0 H PI hi Flow P LA Up to 45 Side View Front View Notes 1 1 in ft 80 mm m for water 2 to 4in ft 160 to 320 mm m for more viscous fluids 2 Minimize all lead line lengths FIGURE 2 Typical Horizontal Installation for Liquid T ate E N e H B v IT I O HI LO j ng e 0 B Top View DP Transmitter or Direct Read Gage i 3 Valve Manifold a ia OF d H B l Flow HI LO j Pe a 4 E ou Bo Side View Notes 1 1 in ft 80 mm m 2 Minimize all lead line lengths FIGURE 3 Typical Horizontal Installation for Gas Page 6 Form 4 20 23 11 10 HI LO are Filling Crosses P B Fill with water a H H P to same level Flow DP Transmitter or amp By pass Direct Read eer x Valve IBB 6 rer edi UND o jo S
4. weld grooved VILPL Insert fits between pair of flanges NPT socket weld 3 5 of reading uncalibrated 0 5 of reading calibrated 10 20 38 65 exact sizing available to provide custom beta ratios CV Series Pipe Sizes 2 to 16 inches and larger 51 to 406 mm Pressure 300 PSIG 2070 kPa maximum Temperature 250 F 120 C maximum Process Connections NPT butt weld flanged grooved Instrument Connections NPT Standard Beta Ratios 38 65 VBR Series Pipe Sizes ato 2 inches 13 to 51 mm Pressure 400 PSIG 2756 kPa maximum Temperature 250 F 120 C maximum Process Connections FNPT socket sweat Instrument Connections NPT Standard Beta Ratios 10 20 38 65 Form 4 20 23 11 10 Page 3 Page 4 Installation Straight Pipe Run Requirements SSL SSM LPL VISSL VISSM VILPL As with most flow elements proper operation and performance is dependent on the required lengths of unrestricted upstream and downstream piping The recommended minimum length of the upstream side of the Venturi flow element depends on the type of fitting at the start of the straight run and the pipe configuration A fully developed symmetrical flow profile is achieved with the minimum upstream and downstream lengths as shown in Figure 1
5. zeroing a transmitter Before installation of any Venturi element inspect for damage particularly at the sealing surfaces Any damage should be reported to Preso as soon as possible Each flow element has an arrow indicating the required direction of flow Failure to properly orient the Venturi element according to the direction of flow will cause improper results For Venturi elements supplied with lifting rings the installer should take care to ensure the connections are in the desired position for their application Thus supplied lugs location may not be appropriate for all applications and may require other means of lifting WARNING Never exceed the maximum pressure or temperature recommended for the measured process Exceeding proper pressure or temperature ratings can lead to personal injury or equipment damage The process piping flanges should be identical to those on the Venturi The process temperature and pressure should never exceed those for which the element has been designed Form 4 20 23 11 10 Page 5 T rE H HE dl Flow 8 8 Top View g DP Transmitter or
6. GRESO FLOW METERING EQUIPMENT Installation and Instruction Manual DER4 D 7 x o s Venturi Flow Meters O Va e BS Models ssL SSM LPL VISSL VISSM VILPL CV VBR a 9008 1008 lt Mog O Ry os I Introduction Preso Venturi flow meters are differential pressure flow devices providing highly accurate and repeatable measurements of liquids gases and steam The Venturi restricts the flow at its throat and measures the pressure difference of the unrestricted flow and restricted flow The Venturi s throat can be designed to meet the flow mearurement application optimizing the Venturi s accuracy and permanent pressure loss The Preso Venturi s design provides longer lasting accuracy and lower permanent pressure loss than orifice type meters reducing maintenance and operating costs The Preso Venturi can be built to meet the highest pressure and temperature specifications often limited in other flow meter technologies All models can also be supplied with RTDs and transmitters to provide an economical mass flow measurement solution Il Specifications Applications Liquids gases and steam SSL Classical Herschel Design VISSL Insert Version Pipe Sizes Ya to 60 inches and larger 13 to 1524 mm Pressure amp Temperature Varies dependent upon materials of construction Pressure Loss 6 of DP
7. f shipment from the factory that all flow meters manufactured by it are free from defects in materials and workmanship This warranty does not cover products that have been damaged due to misapplication abuse lack of maintenance modified or improper installation Preso s obligation under this warranty is limited to the repair or replacement of a defective product at no charge to the end purchaser if the product is inspected by Preso and found to be defective Repair or replacement is at Preso s discretion A return goods authorization RGA number must be obtained from Preso before any product may be returned for warranty repair or replacement The product must be thoroughly cleaned and any process chemicals removed before it will be accepted for return The purchaser must determine the applicability of the product for its desired use and assumes all risks in connection therewith Preso assumes no responsibility or liability for any omissions or errors in connection with the use of its products Preso will under no circumstances be liable for any incidental consequential contingent or special damages or loss to any person or property arising out of the failure of any product component or accessory All expressed or implied warranties including the implied warranty of merchantability and the implied warranty of fitness for a particular purpose or application are expressly disclaimed and shall not apply to any products sold or services rendered b
8. ges Torque all models per ANSI flange ratings Tighten the flange bolts in a progressive star pattern to avoid localized stress on the gaskets CAUTION Do not exceed specified torque Form 4 20 23 11 10 Page 9 Differential Pressure Connections The high pressure connection is always on the upstream side of the flow direction arrow and the low pressure connection on the downstream side Fittings used must be able to withstand the process temperature and pressure conditions as well as provide proper corrosion resistance Refer to appropriate secondary instrument instructions for connections to the seondary instrument high and low ports All fitting threads should be coated with a process compliant thread sealant prior to tightening Once tightened torque mark all fittings for future reference Secondary O O Instruments O O 4 O Q Q Transmitter Direct Read Gage Gage shown with Vv optional by pass 3 Valve Manifold Primary Element Fantin FIGURE 9 Secondary Instrument Illustration Page 10 Form 4 20 23 11 10 NOTES Form 4 20 23 11 10 Page 11 PRESO A _d FLOW METERING EQUIPMENT Limited Warranty and Disclaimer Preso Flow Metering Equipment Division of Racine Federated Inc warrants to the end purchaser for a period of one year from the date o
9. ide View Front View FIGURE 4 Typical Horizontal Installation for Steam HI Lo Fi Filling Crosses ti Th Th Fill with ne OO f alb alt to same level Fl gt lt n alb di f ch a DP Transmitter or B Direct Read Gage yY pass i Valve e D i 7 LA Side View Front View FIGURE 5 Optional Horizontal Installation for Steam Instrument Taps Not in the Same Plane NOTE Please see instructions in Selecting a Mounting Location section on page 4 for additional information Form 4 20 23 11 10 Page 7 aw F nw T Lo a G LO Hi Dre TD i HI h h HE 3 valve oh Manifold I e Pe O o A o o __ DP Transmitter or O Direct Read Gage Front View Side View FIGURE 6 Typical Vertical Installation for Liquid O DP Transmitter or Direct Read Gage Xx ae
10. maximum Turndown Ratio 10 1 Process Connections SSL NPT flanged butt weld socket weld grooved VISSL Insert fits between pair of flanges Instrument Connections NPT socket weld flanged Accuracy 1 of reading uncalibrated 0 5 of reading calibrated Standard Beta Ratios 0 35 0 49 0 63 and 0 75 exact sizing available to provide custom beta ratios SSM Hydraulic Shape Design Nozzle Type VISSM Insert Version Pipe Sizes Ya to 60 inches and larger 13 to 1524 mm Pressure amp Temperature Varies dependent upon materials of construction Pressure Loss 6 of DP maximum Turndown Ratio 10 1 Process Connections SSM NPT flanged butt weld socket weld grooved VISSM Insert fits between pair of flanges Instrument Connections NPT socket weld flanged Accuracy 1 of reading uncalibrated 0 5 of reading calibrated Standard Beta Ratios 0 35 0 49 0 63 and 0 75 exact sizing available to provide custom beta ratios Page 2 Form 4 20 23 11 10 Specifications continued LPL Low Loss Design Short Form VILPL Insert Version Pipe Sizes Ya to 60 inches and larger 13 to 1524 mm Pressure amp Temperature Varies dependent upon materials of construction Pressure Loss 3 of DP maximum Turndown Ratio 10 1 Process Connections Accuracy Standard Beta Ratios Instrument Connections LPL NPT flanged butt weld socket
11. nt Engineering Handbook R W Miller Form 4 20 23 11 10 Straight Pipe Run Requirements CV VBR Preso CV and VBR Model Venturi elements can be installed in any position with minimal straight pipe run requirements The recommended minimum lengths for these models are 5 pipe diameters upstream and 2 pipe diameters downstream Selecting a Mounting Location The primary Venturi station can be installed in any position on vertical or horizontal lines However on horizontal liquid lines where the risk of gas gas entrapment in the meter tubing is prevalent it is recommended to install the element with the connections below the horizontal center line For horizontal air or gas lines it is recommended to install the element with the connection above the horizontal centerline For steam lines to protect the transmitter it is recommended to install the element so that the connections are in the horizontal centerline on meters with the instrument taps in the same plane See Figure 5 for meters with instrument taps that are not in the same plane Make sure that the flow arrow or the indicated inlet is correctly oriented Other positions are acceptable provided proper venting of the secondary element is accomplished and differences in tap line elevations are considered Vertical installations may introduce a slight hydrostatic head effect which must be considered when zeroing a transmitter The use of a 3 valve manifold is recommended particularly for
12. y Preso The above warranty supersedes and is in lieu of all other warranties either expressed or implied and all other obligations or liabilities No agent or representative has any authority to alter the terms of this warranty in any way 8635 Washington Avenue Racine WI 53406 3738 USA Tel 262 639 6770 Fax 262 417 1148 Toll Free 800 632 7337 www preso com info preso com RFD Racine Flow Meter Group ETRAI DYNASONICS Flo tech HEDUAND PRESO racine 2010 Racine Federated Inc All rights reserved PRESO is a registered trademark of Racine Federated Inc Printed in USA UL is a registered trademark of Underwriters Laboratories Form 4 20 23 04 10
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