Liquid Transducer Installation Guide
Contents
1. Figure 28 A Completed Double Traverse Installation Liquid Transducer Installation Guide 27 10 28 99 The Single Traverse Method 28 Note The instructions in this section can also be used for a multiple traverse method However you must use an ODD number of traverses The distance the signal travels from one side of the pipe wall to the opposite side of the pipe wall is considered one traverse The procedure for mounting the clamping fixture for the single traverse method requires a long block and two short blocks The long block is fastened to the pipe first and then the short block assembly is properly aligned and fastened at 180 from the long block Use a center level punch for pipes to locate the transducers on the pipe Do the following 1 Prepare the pipe where you intend to place the universal clamping fixture by making sure it is clean and free of loose material Sanding though usually not required may be necessary to take off any high spots However be careful to preserve the original curvature of the pipe and not to eradicate the marks on the pipe 2 Use a level to find the top of the pipe and then draw a line along the pipe s axis 3 Make two marks on the line separated by the transducer spacing distance S as calculated by the meter 4 Fromone of the marks measure around the circumference of the pipe a distance equal to one quarter the pipe s circumference F2. _ _ _ _ _ _ Fmmm s Using the Small Pipe Small pipe clamping fixtures are used for pipes from 1 2 in to 2 in Clamping Fixture 12 5 to 50 mm in diameter and come with 24 or 23 transducers already installed See Figure 39 below Fixed Transducer Assembly 4 Sliding Transducer Assembly Pointer Figure 39 Small Pipe Clamping Fixture The Small Pipe Clamping Fixture measures flow using the double traverse method However you can use four traverses if desired Do not use the single traverse method or an odd number of traverses with the Small Pipe Clamping Fixture The Small Pipe Clamping Fixture consists of Two Velcro straps Two sets of stainless steel straps One fixed transducer assembly One sliding transducer assembly with a pointer Aruler 36 Liquid Transducer Installation Guide 10 28 99 Using the Small Pipe Clamping Fixture cont Before beginning be sure the installation location you are using has at least 10 diameters of straight undisturbed pipe upstream and 5 diameters downstream from the installation point The installation procedure for transducers using the small pipe clamping fixture is as follows 1 Obtain the transducer spacing dimension S as described in the programming section of your manual N E mmm 6 7 i ned mom a jj al zu SpacingS Sliding Transducer Figure 40 Small Clamping Fixtur
3. r PANAMETRICS Transducer Installation Guide TZ 10 28 99 ej Process Control Instrument Division Liquid Transducer Installation Guide User s Manual 914 002D r PANAMETRICS 10 28 99 r tk2Rd 101mrrr________ s s Table of Contents Introduct TEE 1 Description of Flowcells and Transducers 0 0 cece eee eee ete teens 3 General Guidelines for Transducer Position and Location 0 0 cece cece eee eee 4 Installing Wetted Transducers LL 5 Tilted Diameter Flowcells 0 0 0 ccc RII e 5 Axial Path Offset Flowcells 222 ul ve Rr A eek be Sb eC US bd ds od 7 Creating Flowcellst uri ree a Eu ie oa ie a es anny Rcge b ert ru Sen 8 Installing a Spoolple ce serve tte eet Gow dae iii e dee deans consists 8 Cold Tapping into an Existing Pipeline 0 0 eee cece eee eens 9 Mounting Transducers into the Flowcell esee 13 Using Pan Adapta Precision Pius 16 Installing Clamp On Transducers 20 Clamp On Transducer Tvpes nuenaren ereraa 20 Clamping with Stainless Steel Straps 21 Couplantsy isis Scrub dE dE EEN ea plage ROMA ab ak NEEN 22 Determining the Transducer Locations 23 Using the Universal Clamping vue 24 Mounting Transducers into the Clamping Fixture llle 32 Using the Small Pipe Clamping Fixture lle 36 Yoke and Strap for CTS Transducers 0 0 eee ne ence een een
4. Contact Panametrics for the separate equipment and instructions Spoolpieces can be either flanged or welded into the existing pipeline To position the spoolpiece into the pipeline Figure 6 below 1 Find the arrow mark and the word TOP marked on the data tag on the spoolpiece If the spoolpiece is flanged two bolt holes should straddle the centerline 2 Place the spoolpiece in the pipeline so that the arrow mark is in the direction of flow and the top is appropriately located Be sure the transducer ports are in a horizontal plane 3 Bolt or weld the spoolpiece into place as appropriate 4 Go to the section that describes mounting the wetted transducers In general including cases where the spoolpiece axis is not horizontal be sure that the installation does not allow gas or sediment to deposit in the transducer ports Otherwise the sound waves will be attenuated or blocked entirely Note Use extended well transducers or extended well Pan Adapta plugs for tilted diameter flowcells END VIEW BOLT HOLES STRADDLE CENTERLINE SYMMETRICALLY E S EX Es Data Tag Figure 6 Top View of a Flanged Spoolpiece Liquid Transducer Installation Guide 10 28 99 Cold Tapping into an To cold tap the transducer ports into a pipe the pipe must be empty Existing Pipeline and safe Please note that there are reference drawings and kits for cold tapping available see Figure 9 page 11 Standard kits provide alignm
5. Guide 33 10 28 99 Mounting Transducers into the Clamping Fixture cont 34 3s 6 Refer to Figures 37 and 38 next page for completed installation drawings for the single and double traverse methods Determine the upstream and downstream directions of the pipe and place a transducer into the right block Make sure the transducer cable connector faces away from the center of the installation as shown Use the pressure bolt to secure the transducer in place The pressure bolt should fit into the dimple Hand tighten enough to hold the transducer in place Repeat steps 1 4 to mount the other transducer in the remaining block Connect the cables to the transducers if not already in place Note Jr not already done connect the other end of the transducer cable to the appropriately marked connector on the flowmeter unit Refer to the Installation Section in your manual Liquid Transducer Installation Guide 10 28 99 Mounting Transducers into the Clamping Fixture cont Figure 37 Figure 38 Completed Double Traverse Installation Note f you have mounted the transducers into the clamping fixture properly the two transducer cable connectors will face away from each other as shown in these figures Liquid Transducer Installation Guide 35 10 28 99 pTT r 22 _ T
6. Places gt Transducer Mounting Port lt D OD ID Figure 20 Pan Adapta Plugs Socket Welded in Spoolpiece Flowcell Pan Adapta Plug ouping Lap Joint 7 Flange Flanged Pan Adapta Plug BWT System Pan Adapta Plug Figure 21 Types of Flanged Pan Adapta Plugs 18 Liquid Transducer Installation Guide 10 28 99 Junction Box E BPA2 Pan Adapta Plug Nozzle Pipe Figure 22 Flanged Pan Adapta Plug in Flowcell Nozzle Using Pan Adapta 2 Put couplant on the flat face of the transducer and screw it into the Precision Plugs cont Pan Adapt plug Hand tighten then further torque to 50 ft Ib for steel or 10 ft Ib for plastic IMPORTANT Be sure to use an ultrasonic couplant on the face of the transducer before installing into the Pan Adapta plug The Pan Adapta plug forms part of the pressure boundary to the process stream Extreme care must be taken to ensure that the plugs are properly installed IWARNING All applicable safety codes and safety procedures must be followed when installing or removing the plugs When removing the transducers from the Pan Adapta plugs be sure the plugs are held securely in place Keep the immediate work area clear of insulation or other visual interference so that you can clearly see the threaded items 1 Verify that the plug portion is leak tight 2 Hold the Pan Adapta plug securely in
7. eee 39 Using the Magnetic Clamping Fixture 2 lesse een eens 40 Liquid Transducer Installation Guide i 10 28 99 Introduction This guide is for Panametrics flowmeters that measure liquid flow using an ultrasonic transit time method In this method two transducers are mounted on a pipe one upstream of the other They alternately transmit and receive ultrasonic pulses through the fluid The pulses that travel in the same direction as the fluid flow downstream move slightly faster than the pulses that travel against the flow upstream The flowmeter electronics connected to the transducers measures how long it takes both the upstream and the downstream ultrasonic pulses to travel from one transducer to the other This information is used to calculate flow velocity Caution A flowmeter s accuracy and performance depends on the location spacing and alignment of the transducers This Transducer Installation Guide provides general instructions for locating and installing most transducer types However the specific spacing dimension S of your transducers will be unique to your installation It is important to note that this installation guide provides information for the most common installations only However this guide can also be used for equipment not specifically mentioned here Panametrics can accommodate many special installations by using different transducers and configurations For special installations Panametri
8. have a thinner face than the stainless steel plugs and require the use of extended well wetted transducers Figure 16 below shows standard threaded stainless steel and plastic Pan Adapta plugs Figure 17 below shows extended well threaded stainless steel Pan Adapta plugs Stainless Steel Figure 16 Standard Threaded Stainless Steel left and Plastic Pan Adapta Plugs Figure 17 Extended Well Threaded Pan Adapta Plugs See Figures 18 and 19 page 17 for an example of a threaded Pan Adapta plug and transducer mounted in an offset flowcell and a spoolpiece flowcell respectively Liquid Transducer Installation Guide 10 28 99 Using Pan Adapta Installation procedure Precision Plugs cont 1 Installing Pan Adapta Plugs Threaded type Use a thread sealant such as Teflon tape on the Pan Adapta threads and screw it into the flowcell transducer port Figures 18 and 19 below using the appropriate torque Welded type Socket weld the Pan Adapta plug into the port Figure 20 page 17 If a plastic type is used fuse bonding or glue is required Flanged type Using the appropriate gasket bolt the flanged Pan Adapta plug into the nozzle Figures 21 and 22 pages 19 and 20 Use a torque appropriate for the flange gasket and application rating n wi GR ue Ju odd 1 Figure 19 A Tilted Diameter Flowcell Installation Liquid Transducer Installation Guide 17 10 28 99 TOP VIEW Pan Adapta Plug 2
9. lt lt lt rr D Pipe ID SN JSS nes gt E E J Figure 10 Flanged Nozzles for Cold Tapping 12 Liquid Transducer Installation Guide 10 28 99 ee Mounting Transducers Standard transducers Figure 11 below and extended well into the Flowcell transducers Figure 12 below typically have a 3 4 in or 1 in NPT thread for the transducer to spool piece connection and for the junction box connection to protect the electrical connector Note Transducers and Pan Adaptas are marked with an inspection number a serial number and a programming number Make a note of the programming number it will be needed for programming the meter Figure 12 Extended Well Transducer Liquid Transducer Installation Guide 13 10 28 99 O S AS b oqanT J dNdJdJd AJ XkXAX kXkKXKCZCC PC ODZGZ AzA A ALALALLLLGLNLuLWLLELLELLLELLEEEE EEEDEA L ALZ4O Mounting Transducers Standard and extended well transducers are easily modified for into the Flowcell cont hazardous areas by adding explosion proof junction boxes Figure 13 below IWARNING Be sure to follow all applicable safety codes and safety precautions when installing transducers in hazardous areas To weatherproof the transducers you can use the same junction box with the supplied O ring seal Figure 13 Wetted Transducer in Junction Box 14 Liquid Transducer Installation Guide 10 28 99 Mounting Transducers Buffer rod transducers are
10. used in high or low temperature into the Flowcell cont applications and are typically 6 in long and have a 1 in NPT thread for the process connections Figure 14 below shows a standard 6 in buffer rod transducer Wrench Flat Figure 14 Buffer Rod Transducer To mount the transducers or transducer bearing Pan Adaptas into a flowcell screw them into the mounting ports using approximately three layers of Teflon tape or other appropriate thread sealant Figure 15 below Tighten the transducer or Pan Adapta with a wrench to ensure the mounting will be leak proof Be sure to use the wrench only on the hex nut of the standard transducer or the flats of the buffer rod transducer da Figure 15 Properly Mounted Wetted Transducer Liquid Transducer Installation Guide 15 10 28 99 Using Pan Adapta Precision Plugs 16 The Pan Adapta plug is a pipe plug and coupling assembly made of stainless steel other metals or a plastic such as CPVC PVDF or PTFE The Pan Adapta plug mounts into pipe couplings nozzles or tees enabling you to install and remove transducers easily without interrupting the process or emptying the pipe Stainless steel and other metal Pan Adapta plugs are screwed socket welded or flanged into the pipe coupling nozzle or tee Plastic Pan Adapta plugs are mounted into a pipe coupling either by threading or fuse bonding Plastic Pan Adaptas are used when wetted parts cannot be metal These adaptors
11. all is considered one traverse For more than two traverses consult the Panametrics factory There are two advantages in using the double traverse method First accuracy is improved because the signal is in the fluid longer than with a single traverse Second if the there is enough pipe length available the double traverse fixture is easier to install The procedure for mounting the clamping fixture involves setting the transducer spacing and fastening the clamping fixture on the pipe Please note you will only need the short block assembly for a double traverse installation the long block is not used IMPORTANT 7o set the spacing for the transducers you will need to obtain the spacing dimension S which the flowmeter automatically calculates from user entered pipe and fluid parameters Please refer to the programming procedure in the body of your manual It is best to do this before installing the transducers The installation procedure for transducers using the double traverse method is as follows 1 Be sure the location you have chosen for the installation has at least 10 pipe diameters of straight undisturbed pipe upstream and 5 pipe diameters downstream of the measurement point 2 Prepare the pipe where you intend to place the clamping fixture by making sure it is clean and free of loose material Sanding though usually not required may be necessary to take off any high spots However be careful to preserve the origi
12. cer Installation Guide 39 10 28 99 paru e BSiL CVCEBeHiDULLLLLLIAXXSSIUILEEGLLALGGLLLT DLGGGILOCOOOABLDJ A LLUSELALULCLLAL uLUULLOEOO Using the Magnetic The magnetic clamping fixture is used to fasten transducers to Clamping Fixture magnetizable pipe at the proper spacing The single traverse method requires two magnetic clamping fixtures Each fixture consists of a transducer block and two magnetic blocks Figures 43 and 44 below VINE Transducer Figure 44 Single Traverse Magnetic Fixture Installation 40 Liquid Transducer Installation Guide 10 28 99 Using the Magnetic The double traverse magnetic clamping fixture Figure 45 below Clam ping Fixture consists of two transducer blocks connected by rails Each block cont holds a transducer on the same side of the pipe Figure 45 Double Traverse Magnetic Fixture Installation Liquid Transducer Installation Guide 41 10 28 99 Using the Magnetic Clamping Fixture cont 42 The procedure for mounting the magnetic clamping fixture involves setting the transducer spacing and then securing the fixture to the pipe To set the spacing for the transducers you will need to obtain the spacing dimension S which the flowmeter automatically calculates from the user entered pipe and fluid parameters Refer to the appropriate section in your manual It is best to do this before installing the transducers IWARNING Do not use magnetic f
13. cs will supply drawings of the nominal dimensions based on the particular application This guide consists of the following four sections Description of Flowcell and Transducers General Guidelines for Transducer Position and Location Installing Wetted Transducers Installing Clamp on Transducers We suggest that you read the first two sections carefully and then refer to the appropriate section for the type of transducers you are using If you have any questions or problems contact Panametrics Applications Engineering or Field Applications Support Team for assistance Liquid Transducer Installation Guide 1 10 28 99 L So oi aoaaeS X XK XXA L ELLL GII LUEGCLLLLUZ LLLLLLULLOLLL LLLDELULGGui G ecskRcqcCd Introduction cont Upon request Panametrics can set up in plant or on site hands on training seminars For more information contact your local representative or one of the following Panametrics sales and manufacturing offices Panametrics Inc Panametrics Ltd 221 Crescent St Suite 1 Bay 148 Shannon Airport Waltham MA 02453 3497 Shannon USA County Clare Ireland Tel 781 899 2719 Tel 353 61 471377 Fax 781 894 8582 Fax 353 61 471359 2 Liquid Transducer Installation Guide 10 28 99 Description of Flowcells and Transducers A flowcell is the section of pipe where the transducers are mounted The flowcell can be created by mounting the transducers on the existing pipeline or on a spoolpiec
14. ducers are installed exactly the same way the following information provides some general guidelines to help you All transducers are manufactured with some kind of dimple depression or drill point In addition some transducers also have scribe marks Generally the face of the transducer where the ultrasound is emitted is opposite the dimple When mounting the transducers keep in mind that the face of the transducer makes contact with the pipe The dimples are used as a guide for both aligning and securing transducers For transducers with both markings you should match the dimple and use the scribe marks on the side of the transducers for setting the spacing Figure 34 below shows some typical characteristics for the two most commonly used transducers Figure 34 Transducer Dimples Scribe Marks Liquid Transducer Installation Guide 10 28 99 Mounting Transducers into the Clamping Fixture cont To mount the transducers into the universal clamping fixture use the following steps 1 Before mounting you may choose to connect the cables to the transducers Figure 35 below Refer to the Transducer Connection section in your manual Figure 35 Cable connected to the Transducer 2 Take one of the transducers and apply a thin bead of couplant down the center of its face approximately the size of a toothpaste bead Figure 36 below Figure 36 Apply Couplant to Face of Transducer Liquid Transducer Installation
15. e may require special equipment such as templates or drill guides Prepare the pipe surface around the hole so that the O ring seal in the saddle will form a good seal In many cases this can be done by coating the pipe with epoxy Place a rod through the two holes to help maintain the alignment while you attach a contoured coupling or nozzle to each hole Use rod support bushings to hold the rod in the couplings or nozzle Figure 8 below Fully install saddle and tighten saddle bolts Remove rod and bushings and install transducers Coupling on Saddle gt Saddle Led le pieces VA Figure 8 Non Weldable Pipe with Attached Saddle 10 Liquid Transducer Installation Guide 10 28 99 Cold Tapping into an Figure 9 below shows a typical cold tapping kit Each kit contains Existing Pipeline cont the following 2 Couplings 2 Rod Support Bushings Rod Segments Allen Wrench Detail drawings Figure 9 Cold Tapping Kit Liquid Transducer Installation Guide 11 10 28 99 pin eeN SOegq KJCALCEU AAELUELEOAAAAAKLOA GGuI BBL ULLLZB CELULLLLLLLL LHLGG LLLL Cold Tapping into an Note 7wo nozzles flanged are available for cold tapping ports for Existing Pipeline cont flanged transducers or Pan Adapta plugs The kit for the nozzles includes two tapped flanges to accept the bushings Figure 10 below Bushing Tapped Flange a lt
16. e A spoolpiece is a precision manufactured section of matching pipe that contains the ports where the transducers will be mounted This setup allows more accurate transducer alignment before mounting the spoolpiece into the pipeline If requested the spoolpiece can be calibrated Transducers fall into one of two major classes wetted or non wetted Wetted transducers are inserted into the pipe so that they come in direct contact with the fluid being measured Non wetted transducers commonly referred to as clamp ons are clamped on the outside of the pipe and send their ultrasonic pulses through the pipe wall Panametrics standard wetted transducers are typically flat faced and send their ultrasonic longitudinal wave signals into the fluid with no refraction Panametrics standard clamp on transducers on the other hand use refraction to transmit sound through the pipe wall and into the liquid Although 3 8 1 2 3 4 and 1 in transducer diameters are most common a variety of other sizes is available depending on the application Panametrics has also developed hybrid transducers that consist of two parts a fixed member and a removable wetted transducer The fixed member is a special wetted pipe plug called a Pan Adapta plug This plug fixed member is mounted in the flowcell The wetted transducer can be temporarily and repeatedly coupled to the outside face of the Pan Adapta plug In using the Pan Adapta plug there is no need to i
17. e with Sliding Transducer 2 Setthe sliding transducer to the specified spacing by loosening the nut a half turn on the sliding transducer assembly Use the pointer to align the sliding transducer and then secure the transducer by tightening the nut Figure 40 above 3 Apply a thin bead of couplant to each transducer face The couplant should not ooze out from underneath the transducer face 4 Position the clamping fixture along the length of the pipe making sure the upstream and downstream transducers are facing the right direction Do not place the clamping fixture on the top or bottom of the pipe Caution If your pipe has a rough surface do not rub the transducer face over the surface of the pipe or you may damage the transducers Note 77e fabric Velcro straps can be used to a maximum temperature of 170 F 77 C For higher temperatures use the stainless steel straps Liquid Transducer Installation Guide 37 10 28 99 Using the Small Pipe Clamping Fixture cont Transducer End View Figure 41 Small Clamping Fixture Installation 5 Using your hand push the clamping fixture against the pipe and fasten the clamping fixture using the straps Figure 41 above Make sure the transducer cables are fed through the ends of the clamping fixture If the cables are caught under the fixture the transducers will not make contact with the pipe 6 Connect the transducer cables to your meter as described in
18. ent equipment for single traverse installations only The following steps are general guidelines required to make a cold tap to install the transducer ports IWARNING Be sure to follow all applicable safety codes and safety procedures A Welded Pipe 1 Measure and mark locations on the pipe where the transducer ports are to be placed 2 Cut two holes into the pipe at the port locations This is usually done by using a welding torch or drilling with specialized equipment 3 Place a rod through the two holes to help maintain the alignment while you attach a contoured coupling or nozzle to each hole Use rod support bushings to hold the rod in the couplings or nozzle Figure 7 below 4 Weld the couplings to the pipe 5 Remove the rod and bushings from the pipe Now refer to the next section on mounting the transducers TOP VIEW END VIEW KA ES Alignment Rod Contoured Coupling PA iser d 4 Muss ES XN A Figure 7 Transducer Location for a Cold Tap Single Traverse Only Liquid Transducer Installation Guide 9 10 28 99 B Non Weldable Pipe 1 Bolts removed for clarity A b Y ei e A saddle is used to attach a coupling to non weldable pipe such as wood fiberglass cement concrete cast iron etc Measure and mark locations on the pipe where the transducer ports are to be placed Cut or drill the two holes into the pipe at the port locations Th
19. es of Clamp On Transducers Liquid Transducer Installation Guide 10 28 99 Clamping with Stainless Figures 24 and 25 below show dual and single traverse fixtures Steel Straps respectively with stainless steel straps Figure 25 Single Traverse Clamping Fixtures with Stainless Steel Straps Liquid Transducer Installation Guide 21 10 28 99 Couplants 22 Panametrics supplies an ultrasonic couplant for your clamp on installation The purpose of the couplant is to provide reliable transmission of ultrasound between two adjacent solid surfaces Generally speaking couplants perform this task by excluding air from between the adjacent surfaces Accordingly the clamp on transducers should be pressed tightly against the pipe using hand pressure on the set screw to squeeze the couplant to as thin a film as practical for the given pipe surface The most commonly used couplants in ultrasonic testing are ordinarily satisfactory for any short term clamp on flowmeter application These couplants include in general order of preference gels grease propylene glycol oil glycerine and water Long term couplants include grease epoxy adhesive and solid rubber like sheet couplant Panametrics provides couplants for both permanent and temporary use as well as for high and low temperature applications For long term installations make sure the couplant doe
20. g Block 2 Screw Hooks ae Slide Track Example with Short Blocks ch w WP d REECH Hy Ly D du d th Figure 27 Components of Short and Long Blocks 24 Liquid Transducer Installation Guide 10 28 99 Using the Universal Before you begin the installation make sure you note the following Clamping Fixture cont restrictions for your clamping fixture The universal clamping fixture is available in two lengths 12 and 24 in Each size fixture can be installed for a single or double traverse method However depending on the method used there are pipe size restrictions that are outlined in Table 2 below Table 2 Clamping Fixture Pipe Sizes Single Traverse Double Traverse Pipe Diameter Pipe Diameter 12 in Clamping Fixture 2 24 in 2 12 in 24 in Clamping Fixture 24 48 in 12 24 in The transducer installation consists of mounting the clamping fixture to the pipe and then mounting the transducers into the fixture Refer to the appropriate section for instructions on either the double or single traverse methods Liquid Transducer Installation Guide 25 10 28 99 The Double Traverse Method 26 Note The instructions in this section can also be used for a multiple traverse method However you must use an EVEN number of traverses The distance the signal travels from one side of the pipe wall to the opposite side of the pipe w
21. ide of the long block chains Figure 31 Short Blocks Placed Opposite Long Block 9 Wrap the chain around the pipe and fasten the chain to the screw hook on the opposite side of the block Do this for both short blocks Figure 32 below Note Make sure the chains on both blocks are on the same side of the fixture and are opposite the ruler View from Bottom Figure 32 Long and Short Blocks Attached to Pipe 30 Liquid Transducer Installation Guide 10 28 99 x 1 111t1 tt c RZES SS 5 The Single Traverse 10 Use the screw hooks to tighten the chains on the left and right Method cont blocks until the blocks are secured snugly to the pipe Note Make sure both chains are perpendicular to the clamping fixture and are not twisted If the chains are slanted the slack will cause the blocks to slide Figure 33 below shows a completed single traverse installation The next step of the installation is mounting the transducers see page 32 Bottom View Figure 33 Completed Single Traverse Installation Liquid Transducer Installation Guide 31 10 28 99 Mounting Transducers into the Clamping Fixture 32 The last step of the installation is mounting the transducers into the clamping fixture Although not all trans
22. igure 29 below Use the center punch to make a mark 5 From the other mark go in the other direction around the pipe for one quarter the circumference and use the center punch to make another mark N Center punch Center punch Figure 29 Center Punch Marks Liquid Transducer Installation Guide 10 28 99 The Single Traverse 6 Center the long block over one of the center punch marks on the Method cont pipe Align the long block so that the pressure bolt is over the center of the mark Fasten the block by wrapping both chains around the pipe and fastening the chains to the screw hooks on the opposite side of the block Figure 30 below Fasten Chains Bottom View Figure 30 Long Block Fastened with Chains 7 Use the wing nuts to tighten the chains on the long block until it is secured snugly to the pipe Note Make sure both chains are perpendicular to the bottom of the block and are not twisted If the chains are slanted the slack will cause the block to slide Liquid Transducer Installation Guide 29 10 28 99 o The Single Traverse 8 Position the clamping fixture rails so that the right block is placed Method cont over the remaining center punch mark on the opposite side of the pipe and the pressure bolt is over the center of the mark Make sure the block does not lie on top of the chains of the long block Use Figure 31 below as a reference The left block may be placed on either s
23. ixtures at temperatures that exceed 120 F 49 C or the fixture will fall off Before beginning be sure the location you have chosen for the installation has at least 10 pipe diameters of straight undisturbed pipe upstream and 5 pipe diameters downstream from the installation point To locate the position of the transducer use the pipe center punch method page 28 The installation procedure for the transducers using the double traverse method is as follows IWARNING Do not tighten the transducer pressure bolt so that the magnet separates from the pipe The fixture is heavy and may fall if separated from the pipe A safety tether or leash is recommended for elevated locations Liquid Transducer Installation Guide 10 28 99 Using the Magnetic Clamping Fixture cont Note The instructions that follow can be used for a multiple traverse method However you must use an EVEN number of traverses The distance the signal travels from one side of the pipe wall to the opposite side of the pipe wall is considered one traverse Prepare the pipe where you intend to place the Magnetic Clamping Fixture by making sure it is clean and free of loose material Sanding though usually not required may be necessary to take off any high spots However be careful to preserve the original curvature of the pipe Obtain the transducer spacing dimension S as described in your manual Using the scale on the rod move the adju
24. longer increasing the effective length L and path P of the signal thus increasing accuracy The number of times the signal can traverse the fluid depends on such factors as transducer frequency pipe size pipe wall condition and the fluid being measured Axial path offset flowcells can be made up as a spoolpiece then mounted into the pipeline or they can be created by cold tapping the transducer ports directly into the existing pipeline Figure 5 below shows an axial path offset flowcell that is used for 1 8 to 2 in pipe sizes This type of flowcell maintains accuracy of measurement on small diameter pipes because it provides a much longer path length and allows for 100 area averaging of the flow profile An axial path offset flowcell can be installed into the pipeline using flanging welding NPT threading or quick release methods as necessary When installed the flowcell should be positioned to avoid gas entrainment or sediment deposition in front of the transducers CL FLOW INLET FLOW OUTLET AM I TRANSDUCER Figure 5 Axial Offset Flowcell Liquid Transducer Installation Guide 7 10 28 99 Creating Flowcells Installing a Spoolpiece TOP VIEW m LLL ue This section describes how to create a flowcell using one of two following methods Installing a spoolpiece Cold tapping transducer ports into an existing pipeline Note Hot tapping of pressurized pipe is also possible
25. nal curvature of the pipe 3 Obtain the transducer spacing dimension S as described in the programming section of your manual Using the attached ruler move the blocks so they are a distance S from each other Use the pressure bolt or the ends of the blocks as reference points See Figures 24 and 25 page 20 4 Position the clamping fixture along the horizontal plane of the pipe not on the top or bottom Make sure the chains on both blocks are on the same side of the fixture and are opposite the ruler 5 Wrap the chain around the pipe and fasten the chain on the J screw hook on the opposite side of the block Do this for both blocks Liquid Transducer Installation Guide 10 28 99 EW tte ouoOopR5y _ _ _ _ lt y lt y __ Eea TTT The Double Traverse 6 Using the screw hook on the blocks tighten the chains until the Method cont fixture is secured snugly to the side of the pipe Note Make sure the chains are perpendicular to the clamping fixture and are not twisted If the chains are slanted the slack may cause the fixture to move around The slack may also change the transducer spacing after the transducers are mounted Figure 28 below shows a completed double traverse installation The next step is mounting the transducers See page 31 C L S SPACING C L Centerline EAE m EER rrr RE 6 We SPACING SzSPACING
26. nsducers on a horizontal pipe One transducer cannot be on top of the pipe and one on the bottom because the top of the pipe tends to accumulate gas and the bottom tends to accumulate sediment These can attenuate or block the ultrasonic signal There is no similar restriction with vertical pipes To ensure a full pipe however you should avoid vertical downward flow When using a wetted installation extended well type transducers are preferred to keep the transducer face free from gas or sediment that may tend to get trapped in the transducer port Liquid Transducer Installation Guide 10 28 99 Installing Wetted There are two basic types of flowcell installations for wetted Transducers transducers e Tilted Diameter for use with pipe sizes of approximately 50 mm ID 2 in pipe and above Axial Offset for use with pipe sizes of 50 mm ID 2 in pipe and below In practice approximately 1 to 50 mm ID 04 to 2 in ID pipe sizes are included Tilted Diameter Flowcells A tilted diameter flowcell is so named because the transducers send their pulses at a typical 45 angle across the diameter or other chord of the pipe This type of flowcell can be configured as a single traverse or multiple traverse installation Note a The mounting angle for the transducer is typically 45 but other angles 20 30 or 60 can be used as required b Tilted diameter can also refer to paths that are off diameter such as the Mid Radi
27. nterrupt the process when servicing the hybrid transducer For high temperature applications the Bundle Waveguide Technology BWT system can be used The BWT system consists of a Pan Adapta plug and a transducer The Pan Adapta plug uses waveguide bundles to efficiently concentrate a greater amount of the transducer signal into the process At the same time it acts as a heat buffer that protects the transducer from high temperatures to ensure long life Liquid Transducer Installation Guide 3 10 28 99 General Guidelines for Transducer Position and Location Whichever transducer type is selected for your installation flowmeter accuracy depends on proper transducer location spacing alignment and electronics programming However even though every transducer installation has specific location considerations the following two location guidelines apply to all transducers regardless of type 1 To help assure a uniform flow profile locate the flowcell so that there are at least 10 pipe diameters of straight undisturbed pipe upstream and 5 pipe diameters of straight undisturbed pipe downstream from the point of measurement Measure from the center of the transducer at the pipe wall ID Undisturbed pipe means avoiding sources of turbulence such as valves flanges elbows avoiding swirl and avoiding cavitation Itis important to locate the transducers on a horizontal plane This specifically applies to mounting tra
28. or inside surface conditions or the fluid is highly attenuating you may not be able to obtain a reliable signal Therefore you should use the single traverse method Typically you should try the single traverse method for pipe diameters greater than 20 in Spacing of the transducers is calculated by the electronics after all the installation parameters have been programmed into the flowmeter DOUBLE TRAVERSE SINGLE TRAVERSE Transducer Transducer C Ultrasonic Signal Path ai Figure 26 Double and Single Traverse Installations Liquid Transducer Installation Guide 23 10 28 99 Lr ODD G ALLLLLL u A aCCKAAALLLLLLLLLL L DGDJ LZALLL LGDGLLLLDDEOS Using the Universal The Universal Clamping Fixture acts as a spacing device and a Clam ping Fixture transducer holder The fixture has two short blocks that are used for the double traverse method Two slide tracks connect the two blocks A ruler attached to one of the tracks helps set the transducer spacing For double traverse methods a long block is also used The blocks are used to hold the transducers in position for accurate measuring The clamping fixture is chained or strapped around the pipe The blocks are positioned properly using the spacing dimension calculated by the flowmeter Then the transducers are mounted into the blocks Figure 27 below shows the short and long blocks End View Side View Pressure Bolt __ B Bes RB Short Block 1 Screw Hook Lon
29. place with a wrench Use a second wrench to unthread the transducer Liquid Transducer Installation Guide 19 10 28 99 Installing Clamp On Transducers Clamp On Transducer Types 20 In general installation of clamp on transducers consists of mounting the clamping fixtures to the pipe and then mounting the transducers into the clamping fixtures When installing transducers in non wetted applications you can use one of the following types of devices to hold the transducer against the pipe wall Universal clamping fixture General clamping fixtures Block style Yoke and Strap Magnetic clamping fixture Small clamping fixtures 6 in and 12 in long with Velcro straps Virtually all standard transducers can be used with these installation devices The most common types of Panametrics clamp on transducers are the weatherproof shear wave and the weatherproof hazardous area shear wave transducers Each type of transducer has a flat face and is used for 2 in diameter pipes and larger Panametrics also supplies other transducers for smaller pipes Pipes can be made of carbon steel stainless steel copper brass cast or ductile iron glass plastic PVC or CPVC or fiberglass There are no thickness constraints on the pipe wall as long as the wall can conduct sound adequately For small pipes see page 35 for small clamping fixtures Figure 23 below shows the most common types of transducers Figure 23 Four Typ
30. s not dry or run out Standard couplants supplied from Panametrics are listed in Table 1 below Table 1 Couplants PART NO TYPE TEMP RANGE Standard 40 to 65 C Semi Permanent High Low 160 to 260 C Semi Permanent Temperature For Portable 20 to 60 C Temporary Special As Required Difficult Applications Epoxy 10 to 50 C Permanent Solid Sheet 40 to 230 C Permanent Installations involving hotter or colder temperatures then listed above may require special couplants Consult Panametrics for these applications Liquid Transducer Installation Guide 10 28 99 lt T _ _ r _ Determining the The first step in the installation is determining the location of the Transducer Locations transducers The transducers can be mounted using one of two methods also see Figure 26 below Double traverse method where the transducers are mounted on the same side of the pipe and the ultrasonic signal is bounced from one transducer to the other off the opposite wall e Single traverse method where the transducers are mounted diagonally across from each other The ultrasonic signal is transmitted directly from one transducer to the other across the pipe For pipe diameters from 1 to 20 in always try the double traverse method because it is easier to configure and yields greater accuracy However if the pipe has po
31. stable block to the specified location Note Use the pressure bolt as the measuring point for the bracket Position the bracket on the ruler so that the pressure bolt is right above the spacing dimension S Locate the magnetic blocks at least 4 in away from the transducer blocks This will ensure that there is enough clearance to mount the transducer in the blocks Position the clamping fixture along the horizontal plane of the pipe If the pipe is horizontal do not place the fixture on the top or bottom Turn the switches on each magnet to the ON position Liquid Transducer Installation Guide 43 10 28 99 Index A S Axial Offset Flowcell 5 Single Traverse Flowcell 5 B Single Traverse Method 23 Small Clamping Fixture 20 Buffer Rod Transducer 15 Small Pipe Clamping Fixture 36 Bundle Waveguide Technology 3 Ria LR 37 C SpoolpieCe c i iue vo pue Pa SN gee 3 Clamping Fixture Installing 3 rk Pee a AE 8 Universali ripiena 24 T Clamp On Transducer a a 20 Tilted Diameter Flowcell 5 Cold Tapping sy canes ao er 9 Transducer Kit irises ea ie shal Kr dte ret 11 Buffer Rod 15 Non Weldable EE 10 Camp Og 20 Welded Pipe 0 0 0 0 ee eee 9 Dieter 32 Couplanti igicen orienta 22 33 Exvtended Well A D Hazardous Arens 14 Double Traverse Method 23 24 inspec
32. the Installation Section of your user s manual 38 Liquid Transducer Installation Guide 10 28 99 _ _ 2p24 1 m_ 12sz 55552 Yoke and Strap for CTS Another type of clamping fixture is the yoke and strap Figure 42 Transducers below Although the yokes can be secured to the pipe with stainless steel straps the yokes can also be welded However before welding check the local codes especially in pressurized vessel applications Use the following steps to install the yoke and strap clamping fixture 1 Determine the transducer location by measurement and layout procedures Transducers must be mounted with at least 10 diameters of straight undisturbed pipe upstream and 5 diameters downstream from the installation point 2 Mount the yokes using the stainless steel straps Back off the top pressure bolt and the side support bolts 3 Mount the transducers in a horizontal plane Transducer performance is sensitive to exact location For a single traverse installation the transducers must be 180 from each other around the circumference of the pipe Use the S dimension supplied with your flowmeter based on programming information to figure the exact location of the transducers 4 Install the transducers into the yokes 5 Use the side support bolts and top pressure bolt to secure the transducers into the fixture Figure 42 Strap Yoke and Transducer Liquid Transdu
33. tion E i Location s does xev EU 4 Advantages 0 0 0 ce eese 26 Spacing 26 Mounting lesse ees 32 A NOD Wetted iia uie ooa S did E SPacing sia ae ew asta en Re e 1 24 26 Explosion Proof Junction Box 14 Weatherproof 14 EE ii priorato pedate 3 F Transducer Ports Flanged Spoolpiece 8 Cold Tapping a ea Res 8 Eloweelk ederrean s ten aAA 3 8 Hot Tapping uber 8 E EE E EE 26 G Transit Time Method 1 General Clamping Fixture 20 U Universal Clamping Fixture 20 24 M a i Pipe Sizes dhe rale 25 Magnetic Clamping Fixture 20 40 WERDEN vow hoa ade 40 42 W Multiple Traverse Flowcell 5 WeldedSpoolpiece 8 P Y Pan Adapra EE Se Straps aree 39 Extended Well 16 Plan ged yo de dee ele a 17 Inspection Number 13 Plastica eere te ee 16 Removing cedo sesaran ssr eee eee eee 19 Stainless Steel 16 Threaded uir 17 Welded xi eR Eege gees 17 Liquid Transducer Installation Guide
34. us path A single traverse configuration consists of two transducers mounted on opposite sides of the pipe so that the signal they transmit passes through the fluid just once at a typical 45 angle Figure 1 below Top View n H l ly P Distance that the signal travels 4 through the liquid from one K transducer to the other 7 Wie VERA vi ri r Wl V H y L Projected distance of acoustical path in liquid Figure 1 Single Traverse Flowcell with L Pipe I D Liquid Transducer Installation Guide 5 10 28 99 Tilted Diameter Flowcells A multiple traverse configuration consists of two transducers cont ERR 1 Wf transducer to the oth YY P ransaucer to tne otner LY SS mounted on the pipe so that the signal traverses the fluid two or more times before reaching the other transducer See Figures 2 to 4 below for examples of commonly used installations P Distance that the signal travels through the liquid from one dp A L Projected distance of acoustical path in liquid P Distance that the signal travels through the liquid from one transducer to the other NS ZL S Figure 4 Mid Radius Single Traverse 2 Path Flowcell Liquid Transducer Installation Guide 10 28 99 Axial Path Offset In axial path offset flowcells the walls of the pipe reflect the Flowcells ultrasonic signal This allows the signal to remain in the fluid
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