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Chapter 3. Inserting T9 Transducers into the Pipe

26

Model T9 Ultrasonic Flow Transducer Installation Guide

3.4.1 Securing the Transducers (cont.)

6.

Install the junction boxes on the end of the transducers using the compression fittings.

7.

Refer to your flowmeter

Startup Guide

or

User’s Manual

to make transducer electrical connections.

Top View

Compression Fitting

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Summary of Contents for ApexPro T9

Page 1: ...GE Measurement Control Solutions Flow 916 080 Rev B July 2010 Model T9 Ultrasonic Flow Transducer Installation Guide ...

Page 2: ......

Page 3: ...ESensingInspection com 2010 General Electric Company All rights reserved Technical content subject to change without notice Model T9 Ultrasonic Flow Transducer Installation Guide 916 080 Rev B July 2010 ...

Page 4: ...ii no content intended for this page ...

Page 5: ...ozzle Location 7 2 5 Installing the First Welding Boss 10 2 6 Installing the First Nozzle 12 2 7 Installing the Second Welding Boss and Nozzle 14 2 8 Hot Tapping the Pipe 14 Chapter 3 Inserting T9 Transducers into the Pipe 3 1 Introduction 15 3 2 Inserting Transducers with the Simple Holder 15 3 3 Inserting Transducers with the Barrel Holder 19 3 4 Inserting Transducers with the Flanged Holder 22 ...

Page 6: ...Contents iv Model T9 Ultrasonic Flow Transducer Installation Guide no content intended for this page ...

Page 7: ...s are met for each installation Auxiliary Equipment Local Safety Standards The user must make sure that he operates all auxiliary equipment in accordance with local codes standards regulations or laws applicable to safety Working Area WARNING Auxiliary equipment may have both manual and automatic modes of operation As equipment can move suddenly and without warning do not enter the work cell of th...

Page 8: ...hat could impact health and the environment In order to avoid the dissemination of those substances in our environment and to diminish the pressure on the natural resources we encourage you to use the appropriate take back systems Those systems will reuse or recycle most of the materials of your end life equipment in a sound way The crossed out wheeled bin symbol invites you to use those systems I...

Page 9: ...cer Construction Nozzle Installation Transducer Installation Maintenance Specifications 1 2 Transducer Construction Each T9 transducer assembly see Figure 1 consists of the following components a metallic body a transducer head that consists of a piezoelectric element wired to the BNC connector a BNC style connector for use in connecting the transducer to the flowmeter an optional noise dampening ...

Page 10: ...Chapter 1 Information 2 Model T9 Ultrasonic Flow Transducer Installation Guide no content intended for this page ...

Page 11: ... Nozzle Installation Kit If you are tapping the pipe without using a Nozzle Installation Kit refer to the supplied drawings in your shipment This procedure is written and illustrated for installations on horizontal pipes however the procedure is the same for vertical pipe installations This procedure contains the following instructions Identifying and Checking the Nozzle Installation Kit Component...

Page 12: ...heck as described in the following sub sections The Nozzle Installation Kit contains the materials listed below Use Figure 2 to help identify each component 2 Nozzles 2 Welding Bosses 1 Jig 1 Threaded Rod 1 in diameter washer and nut IMPORTANT You will need to supply eight 5 8 in 4 25 in studs with two nuts each Figure 2 Components for Nozzle Installation Kit Nozzle Top Welding Boss Side Top Jig S...

Page 13: ...ach other and with respect to the pipe centerline the angular tolerance must be held to 1O All hole cutting in process piping must be performed using hot tapping equipment 1 For optimum performance you should select a location that has undisturbed straight run pipeline at least 10 pipe diameters upstream and 5 pipe diameters downstream from the point of measurement Undisturbed pipe means avoiding ...

Page 14: ...ing the First Nozzle Location cont 3 At the 3 o clock position center punch the pipe to mark the position for the center of the first nozzle 4 Spray this area with a marking dye product Using a metal edge scribe a vertical and a horizontal line 6 in long that intersect at the center punch mark Side View Side View ...

Page 15: ...he possible variation in outside diameter of the pipe measure the outside diameter of the pipe at four locations between the nozzle centers Calculate the average outside diameter based on these measurements 3 Using a roll of polyester film or equivalent cut a strip of film at the width and length as follows IMPORTANT Ensure that the sides of the film are cut parallel to each other Width equal to t...

Page 16: ...at the first nozzle location Make sure the strip overlaps squarely around the pipe and mark the overlap position of the strip This equals the circumference of the pipe 5 Remove the strip of film and fold it as shown below to determine the position which is diametrically opposite the overlap position when the film is reapplied to the pipe 6 Mark the outside of the fold for reference Side View Overl...

Page 17: ...ribe lines Again make sure you wrap the strip of film squarely around the pipe 8 The new position of the center of the second nozzle is now identified as the intersection of the fold line and the second edge of the strip of film Center punch this location prior to removing the strip of film 9 Remove the film 10 Scribe vertical and horizontal lines each 6 in long to intersect at the center punch ma...

Page 18: ...iameter d welding boss outside diameter 1 660 in 4 cm Table 1 below shows values of X for various pipe sizes 2 Scribe the oblique center line on the pipe at the prescribed distance from the true center line The oblique center line should be marked on the side of the true center line that is closer to the second nozzle location Table 1 X Values for Various Pipe Sizes Pipe X Dimensions NPS DN O D 6 ...

Page 19: ... the pipe Make sure you orient the boss as shown below 4 Clamp the boss in place using a pipe strap or equivalent so that it cannot move during tack welding 5 Check the boss alignment then tack weld the carbon steel boss to the pipe in each of the four grooves between the boss scribe marks 6 Remove the clamp and check the alignment again If the boss is misaligned by 0 02 in 0 5 mm or more remove t...

Page 20: ...position using the jig and 1 in threaded rod provided prior to welding the nozzle 1 Screw the threaded rod into boss that is welded onto the pipe If necessary remove the washer and nut from the threaded rod 2 Insert the pipe section of the jig into the pipe section of the nozzle and fasten using four studs and eight nuts not supplied Threaded Rod Welded Boss Jig Nozzle Studs Sets of Nuts ...

Page 21: ...e the jig nozzle assembly over the threaded rod fitting the jig into the welding boss while aligning the contoured end of the nozzle so it matches the pipe arc 4 Align the nozzle scribe marks with the pipe scribe marks and tighten the assembly in place using the washer and nut Jig Nozzle Assembly Threaded Rod Welded Boss Washer and Nut ...

Page 22: ...n 15 mm in length Allow to cool for 30 seconds between tacks 7 Proceed to complete the root pass and subsequent filler passes as required 8 Allow to cool then remove the threaded rod washer nut and jig 2 7 Installing the Second Welding Boss and Nozzle Install the second welding boss and nozzle at the required position as described in Installing the First Welding Boss and Installing the First Nozzl...

Page 23: ...ith a compression fitting tapped or welded in the middle of the flange Transducers are usually installed in a diagonal 45o configuration although other configurations are available The procedure below applies to a diagonal 45o single traverse configuration when the transducer insertion depth does not exceed the pipe inside diameter Consult GE for other configurations IMPORTANT If you do not know t...

Page 24: ...ducers with the Simple Holder cont 2 Insert the holder into the pipe nozzle Place a spiral wound gasket between the nozzle and the holder The nozzle length determines the transducer face position 3 Bolt the holder flange onto the nozzle flange as shown below Transducer Head Nozzle Gasket Pipe Pipe Nut Washer Nozzle Washer Bolt ...

Page 25: ...s into the Pipe 3 2 Inserting Transducers with the Simple Holder cont 4 Install the junction box on the end of the transducer using the compression fitting 5 Repeat the above steps for the other transducer The figure below shows a completed installation Junction Box Compression Fitting 45 C L ...

Page 26: ...low to calculate the path length P based on the pipe inside diameter and transducer face angle P ID cos A where ID pipe inside diameter and A nozzle angle 7 Record the axial dimension L The L dimension is equal to the pipe inside diameter 8 Refer to your flowmeter Startup Guide or User s Manual to make transducer electrical connections You have completed transducer installation L P ...

Page 27: ...port for the transducer Compression fittings on the top and bottom of the barrel holder keep the transducer in place See Figure 3 Figure 3 Barrel Holder with 180o Head Transducer 1 All equipment comes pre assembled Measure the insertion depth as shown below The insertion depth is set at the factory and should be verified Stainless Steel Pipe 180 Transducer Head o Compression Fitting with PTFE Carb...

Page 28: ...cont Procedure for Inserting Transducers with the Barrel Holder cont 2 Insert the holder into the pipe nozzle Place a spiral wound gasket between the nozzle and the holder The nozzle length determines the transducer face position 3 Bolt the holder flange onto the nozzle flange as shown below Barrel Holder Nozzle Pipe Gasket Nozzle Washer Nut Pipe Bolt ...

Page 29: ...ting 5 Repeat the above steps for the other transducer 6 Use the equation below to calculate the path length P based on the pipe inside diameter and transducer face angle P ID cos A where ID pipe inside diameter A nozzle angle 7 Record the axial dimension L 8 Refer to your flowmeter Startup Guide or User s Manual to make transducer electrical connections You have completed transducer installation ...

Page 30: ...der with T9 Transducer 1 Calculate the transducer insertion depth TID To do this measure from the inside diameter of the pipe to the raised face of the nozzle flange via the centerline Then add 0 125 in 3 2 mm to the measurement This equals the TID If you are not able to measure from the inside of the nozzle use the following equation Transducer Insertion Depth Nozzle Length 0 125 in 3 2 m where A...

Page 31: ...ten the compression fitting to hold the transducer in place 4 Place a spiral wound gasket over the end of the transducer Note You must use a gasket in order to provide the proper acoustic isolation 5 Inspect the pipe nozzle Make sure it is free from dirt rust Use the steel wool to clean the pipe nozzle if necessary 6 Insert the transducer into the nozzle Gasket Gasket ...

Page 32: ...nserting Transducers with the Flanged Holder cont 3 4 1 Securing the Transducers 1 Secure the flanges together by placing the studs washers and nuts as shown below Hand tighten each stud The factory recommends using ASTM A193 Grade B7 or equivalent studs and ASTM A19 Grade 2H or equivalent nuts Top View Top View ...

Page 33: ...N m in three stages Set the torque wrench to 30 ft lb 40 N m and torque the studs in the order shown below 3 Set the torque wrench to 60 ft lb 81 N m and torque in the order shown below 4 Set the torque wrench to 80 ft lb 108 N m and tighten in the order shown above 5 Repeat steps 1 through 4 for the other nozzle 1 1 2 2 3 3 4 4 5 6 7 8 Begin Here 4 Hole Flange 8 Hole Flange 1 1 2 2 3 3 4 4 5 6 7 ...

Page 34: ...ansducer Installation Guide 3 4 1 Securing the Transducers cont 6 Install the junction boxes on the end of the transducers using the compression fittings 7 Refer to your flowmeter Startup Guide or User s Manual to make transducer electrical connections Top View Compression Fitting ...

Page 35: ...eplace a transducer use the appropriate removal procedure that follows 4 2 Removing Transducers Use the steps below to remove transducers that have been installed with a simple barrel or flange holder Note The illustrations in the steps below use a simple holder WARNING FOLLOW ALL APPLICABLE SAFETY CODES WHILE PERFORMING THE FOLLOWING PROCEDURES 1 Disconnect power from the flowmeter WARNING MAKE S...

Page 36: ...Chapter 4 Maintenance 28 Model T9 Ultrasonic Flow Transducer Installation Guide 4 2 Removing Transducers cont 3 Disconnect the transducer cables at the junction box Junction Box ...

Page 37: ...ansducer Installation Guide 29 Chapter 4 Maintenance 4 2 Removing Transducers cont 4 Remove the junction box from the end of the transducer by loosening the compression fitting and unscrewing the junction box Compression Fitting ...

Page 38: ...l flange holder to the nozzle flange and remove it from the pipe nozzle 6 Install a new flange gasket on the pipe nozzle Then fasten the blind flange to the pipe nozzle with the bolts removed in the previous step 7 Repeat steps 3 through 6 for the other transducer if necessary You have completed the removal procedure it is now safe to reopen the process line Bolts Bolts Gasket Blind Flange ...

Page 39: ...terial Standard Titanium Optional 316SS Monel or Hastelloy Field Mounting Flowcell hot or cold tap Process Connection 1 5 in 40 mm flanged Holder Type Simple barrel or flanged holder Holder Ratings 150 300 600 Operating Frequency 100 kHz Pressure Range 0 to 2700 psig Electrical Rating 200 V peak to peak 5 mA Ambient Temperature Range Europe 40 to 158 F 40 to 70 C North America 4 to 140 F 20 to 60 ...

Page 40: ...Chapter 5 T9 Specifications 32 Model T9 Ultrasonic Flow Transducer Installation Guide no content intended for this page ...

Page 41: ...or a particular purpose and warranties arising from course of dealing or usage or trade Return Policy If a GE Sensing instrument malfunctions within the warranty period the following procedure must be completed 1 Notify GE Sensing giving full details of the problem and provide the model number and serial number of the instrument If the nature of the problem indicates the need for factory service G...

Page 42: ...Warranty 34 Model T9 Ultrasonic Flow Transducer Installation Guide no content intended for this page ...

Page 43: ......

Page 44: ...00 Certified Company www gesensinginspection com en about_us quality html Customer Support Centers U S A The Boston Center 1100 Technology Park Drive Billerica MA 01821 U S A Tel 800 833 9438 toll free 978 437 1000 E mail sensing ge com Ireland Sensing House Shannon Free Zone East Shannon County Clare Ireland Tel 353 0 61 470291 E mail gesensingsnnservices ge com ...

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