C-ET Installation Guide
Contents
1. I Zero Points Top View 2 Using a ruler or the ruler printed on the fixture set one of the mounting blocks at least 2 in 5 cm from the edge of the fixture To move the block loosen the set screw slide the block to the desired location and tighten the set screw Use the edge of the block shown below as the setting point Zero Pointon lt Measuring Scales ad Set Screw Mounting Block Set at 2 in 5 cm usin Set at 2 in 5 cm he gt CHP pSing this edge of block Top View C ET Ultrasonic Flow Transducer System Installation Guide 15 3 36 Setting the Transducer Spacing cont 3 Slide the other mounting block to the calculated spacing plus 2 in 5 cm For example a Spacing for the first mounting block 2 in 5 cm b Spacing as calculated by the flowmeter 0 5 in 12 5 mm c Second mounting block final location 2 in 0 5 in 2 5 in 5 cm 1 25 cm 6 25 cm The overall spacing between blocks should be left edge to left edge or right edge to right edge Note Jf possible the second block should also be set at least 2 in 5 cm from the edge of t2. Figure 3 Transducer Locations 4 The following is a guide for the recommended wall thickness in which to install the C ET transducers The C ET transducer cannot be installed on wall thicknesses between 0 27 in 6 86 mm and 0 33 in 8 38 mm On page 5 and page 6 are two charts showing typical pipe sizes 4 C ET Ultrasonic Flow Transducer System Installation Guide 3 1a Application Guide Wall Thickness in inches Nominal Outside Schedule Pipe Size Diameter fin in 60 xs 80 100 Wall Thickness in Note Pipe sizes not suitable for C ET installations are highlighted in red C ET Ultrasonic Flow Transducer System Installation Guide 5 3 10 Applicati Nominal Outside Pipe Size Diameter mm mm on Guide Wall Thickness in millimeters Schedule 10 20 30 STD 40 60 XS 80 100 120 140 160 XXS Wall Thickness mm Note Pipe sizes not suitable for C ET installations are highlighted in red C ET Ultrasonic Flow Transducer System Installation Guide 3 1c Application Guide Cryo Calculations Tw Process Temp Thetal Soundspeed Process Temp Thetal Soundspeed 0 5 MHz F C deg ft s m s F sc deg ft s m s usecs 328 9 979 9
3. and batteries are specifically excluded from any liability This warranty is effective from the date of delivery to the original purchaser If GE Sensing determines that the equipment was defective the warranty period is e one year from delivery for electronic or mechanical failures e one year from delivery for sensor shelf life If GE Sensing determines that the equipment was damaged by misuse improper installation the use of unauthorized replacement parts or operating conditions outside the guidelines specified by GE Sensing the repairs are not covered under this warranty The warranties set forth herein are exclusive and are in lieu of all other warranties whether statutory express or implied including warranties or merchantability and fitness for 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 GE Sensing will issue a RETURN AUTHORIZATION NUMBER RAN and shipping instructions for the return of the instrument to a service center will be provided 2 If GE Sensing instructs you to send your instrument to a service center it must be shipped prepaid to the authorized repair station i
4. other suitable device Mark a circumferential line with the tape measure Note Ifyou are using a PT878 thickness gauge at extreme high or low temperatures it can be in contact with the pipe for less than two seconds only and then must be removed Allow it to cool for a minimum of 2 minutes before taking another measurement Now measure the OD and the wall thickness at eight points along the pipe circumference at 45 intervals shown in Figure 8 three times per point and record the mean values Use the mean value for the wall thickness Figure 8 Measuring the Wall Thickness To determine the meter s correction factor for non concentric pipes calculate the mean inside pipe diameter ID and the pipe ID at the transducer locations Then divide the square of the mean ID by the square of the ID at the transducer location as shown in the equations below where ODX is the outside diameter at a given point and WX is the wall thickness at a given point as shown in Figure 3 6 on the previous page mean ID OD e Wi W gt OD W gt W6 OD W3 W OD Wa W 14 12 C ET Ultrasonic Flow Transducer System Installation Guide Mean ID 5 Kor non concentric pipe 7 2 ID at transducer location 3 2c Fluid Soundspeed If fluid soundspeed is not known for hydrocarbons start with a soundspeed of 3500 ft s 1067m s at a temperature range of 400 F to 600 F 200 C to 315 C or 3000 ft s 915m s at
5. 0 Point min 12 in 30 cm long Side View on opposite side of pipe 28 C ET Ultrasonic Flow Transducer System Installation Guide 3 4d Installing the First Mounting Block 1 Loosen the wing nuts up to the end of the J hooks on both of the mounting blocks Loosen Wing Nuts Side View 2 Take one of the mounting blocks and line up one edge of the mounting block so it is centered over the origin line and the front edge of the mounting edge lines up with the circumferential line Circumferential Line j Origin Line Front Edge of Mounting Block 3 Carefully wrap the chain around the pipe taking care not to twist it Hook the chain into the J hook Circumferential Line Origin Line Front Edge of Mounting Block C ET Ultrasonic Flow Transducer System Installation Guide 29 3 4d Installing the First Mounting Block cont 4 Tighten the chain around the pipe so the mounting block can be moved for adjustments 5 Insert the C ET transducer without couplant into the mounting block Confirm that the C ET mounts into the slider properly A Pressure Bolt pes Circumference Line Origin Scribe Line 6 Use the pressure bolt to secure the C ET transducer Hand tighten enough to hold the C ET transducer in place Do not overtighten so that the holder lifts off the pipe 7 Adjust the mounting block so the center of the waveguide
6. 3 041 9 a 392 10 065 2 3 067 9 148 3 9 985 2 3 067 5 9 990 3 3 067 1 9 995 3 a 3 066 6 10 000 1 3 048 0 A 10 059 5 3 066 1 10 004 7 3 049 4 10 057 7 3 065 6 10 009 2 3 050 8 i A 10 055 7 3 065 0 10 013 5 3 052 1 i 0 053 5 3 064 3 10 017 7 3 053 4 E 0 051 2 3 063 6 0 021 7 3 054 6 E 0 048 7 3 062 8 10 025 5 3 055 8 0 046 0 3 062 0 0 029 2 3 056 9 0 043 2 3 061 2 0 032 7 3 058 0 0 040 3 3 060 3 0 036 1 3 059 0 0 037 1 3 059 3 0 039 2 3 060 0 0 033 8 3 058 3 0 042 3 3 060 9 0 030 4 3 057 3 0 068 7 3 068 9 i 10 026 8 3 056 2 0 068 3 3 068 8 i 10 023 0 3 055 0 0 067 8 3 068 7 10 019 0 3 053 8 0 067 1 3 068 5 E 10 014 9 3 052 6 0 066 2 3 068 2 10 010 7 3 051 3 Ambient 20 C 68 F Increase wedge angle 0 5 degrees for every 10 C 18 F increase in ambient temperature Decrease Tw 1 5 microseconds for every 10 C 18 F increase in ambient temperature C ET Ultrasonic Flow Transducer System Installation Guide 7 3 2 Obtaining the Transducer Spacing 3 2a Determining Special Transducer Parameters The C ET transducers must be programmed in the flowmeters as special transducers As specials four parameters are required Frequency Tw Wedge Angle and Wedge Soundspeed Frequency Frequency
7. GE Measurement amp Control Model C ET Ultrasonic Flow Transducer System Installation Guide a ti t k 916 083 Rev B Imagina ION OT wor January 2013 Model C ET Ultrasonic Flow Transducer System Installation Guide 916 083 Rev B January 2013 WWW ge Mcs com 2013 General Electric Company All rights reserved Technical content subject to change without notice no content intended for this page Contents LM nd re stalin cin hte tatiana A 1 2 oca le AAA RNA RO IR A O sco eat ie Ate LHS FRI A 1 To o E AAA gik A atte Cubed des rs 2 3 Installing the C ET Transducer System ir a li Seve Raa As RA en eh 3 3 1 Choosing an Installation Local iba 4 3 1a Application Guide Wall Thickness in incheS uuaaaaaaaaaaaaa wawa wa aaa aaa anni 5 3 1b Application Guide Wall Thickness in millimeterS uuuaaaa aaa aaa aaaaa aaa ences 6 3 1c Application Guide Cryo Calculations oai OE a UA ROCA 7 3 2 Obtaining the Transducer Spacing MR PS IR BNF digs al e tee es es ados Te eos 8 3 2a Determining Special Transducer Parameters oo a SS OR ee eo odes 8 3 2b Pipe Survey to Determine OD and Wall Thickness 0 000 cence eee cette ee nada 12 3 20 Fluid SOURAS peed saa ag ska 13 3 3 Installing the V Clamping Fixtures and Transducers ssns oa alts GR wh 13 3 3a Tools and a A ka gd 14 3 55 Setting the Transd cerSpaciNg a EA AAA RR 15 ia Fangi Ae tet Maan tence a RAA ON a
8. Guide 17 3 3c Installing the Fixture cont 3 Position the clamping fixture as close as possible to the horizontal plane The fixture should be positioned so the transducers will be located on the opposite sides of the pipe 180 apart ideally at the 3 and 9 o clock positions IMPORTANT Do not place the fixture on the pipe so that the transducers are on the top or the bottom of the pipe Note Make sure you reassemble the fixture properly to ensure the correct transducer spacing If the fixture has rulers on the rails make sure the zero points on each ruler are at the same end of the fixture as shown below E Half p Top View Zero on Each Measuring a Top View 18 C ET Ultrasonic Flow Transducer System Installation Guide 3 3c Installing the Fixture cont 4 Install the four nuts onto the threaded rods with the convex side of the nut facing the fixture Hand tighten each nut evenly as shown below DO NOT use a cross tightening pattern Nuts 2 places gt Top View Tightening Pattern o
9. SCE 00 SLT osz STZ ooz SLT OST SCL OOT 9 09 qwe 9 00 QUe gt 9 07 QUE 3 0 QUIE 2 07 qwe 5 MHz Transducer Tw 0 Graph 1 Figure 5 C ET Ultrasonic Flow Transducer System Installation Guide 10 Nominal Process Temperature C Tamb 20 C amb 0 C Tamb 20 C Tamb 40 C Tamb 60 C Figure 6 Graph 2 Tw 1 0 MHZ Transducer C ET Ultrasonic Flow Transducer System Installation Guide 9 aanyesadwal ssad0jg EUIUON Osc SCC ooz SZT OST 9 09 que 2 07 que 9 07 que 9 0 qwue 3 07 que saa138aq ajsuy a pam Figure 7 Graph 3 Wedge Angle 11 C ET Ultrasonic Flow Transducer System Installation Guide 3 2b Pipe Survey to Determine OD and Wall Thickness Finding a location where the pipe is concentric is important for optimum accuracy and performance If possible perform a pipe survey with an ultrasonic thickness gauge to find the best location Measure the outside diameter OD of the pipe using a tape measure or
10. TV couplant every time the sensor spacing is changed Repeat the procedure steps 5 and 6 if necessary until the soundspeeds are within 0 25 Remove the CPL 16 and prepare the transducer for solid couplant C ET Ultrasonic Flow Transducer System Installation Guide 35 3 4f Mounting the Transducers cont Before the C ET transducer can be permanently inserted into the clamp solid sheet couplant must be applied To do this lay the solid sheet couplant over the transducer face and bend the ends over the transducer s heel and toe Temporarily secure the couplant to the heel and toe with electrician s tape Do not apply the tape to the pipe contact surface Tape will burn fall off after time To e Hee Solid Sheet Couplant Figure 10 Applying the Solid Sheet Couplant 8 Install the sensors into the yokes taking care not to shift the couplant Tighten the hold down bolts to 15 ft lbs 20 N m Tighten the backing nut 9 Reinstall the insulation up to the line engraved on the sensors CAUTION Not reinstalling the insulation up to the engraved line could cause permanent damage to the C RS transducer You have completed installing the PI clamping fixture and transducers You should do all of the following e Refer to the installation section of your User s Manual or Startup Guide to make transducer connections e Make a note of the installation date and set a schedule for periodic inspection and tightening of clamping fi
11. a that is large enough for the transducers installation 2 Remove any loose paint or rust with sandpaper Make sure to preserve the original curvature of the pipe If the finish is mirror smooth use the file to roughen the surface 3 4c Surveying the Pipe 1 Measure the pipe circumference IMPORTANT Do not use a calculated value or a nominal value for the circumference 2 Mark a line around the entire circumference of the pipe 7 Circumferential Line Side View 26 C ET Ultrasonic Flow Transducer System Installation Guide 3 4c Surveying the Pipe cont 3 Line up the zero scale point at the desired transducer location e g 3 or 9 o clock of the first transducer Mark a line origin line at least 12 in 30 cm long Zero Point Origin Line min 12 in 30 cm long Side View 4 To find the coinciding point on the opposite side of the pipe 180 away divide the measured circumference by 2 and measure this distance along the circumferential line from the zero point Take the 180 point measurement from both over the top of the pipe and under the bottom of the pipe on a horizontal pipe to ensure reciprocity of the installation Mark a small scribe line at the 180 point 180 and C 2 C ET Ultrasonic Flow Transducer System Installation Guide 27 3 4c Surveying the Pipe cont 5 Mark another origin line at the 180 point at least 12 in 30 cm long e Origin line 18
12. f Bolts Tighten equally first Tighten equally second oj 2 3 ra Front View C ET Ultrasonic Flow Transducer System Installation Guide 19 3 3d Preparing the Pipe 1 Using a permanent marker or other means based on the temperature of the pipe mark the inside edges of the fixture These lines indicate where to clean the pipe Make sure you mark both sides of the fixture Make marks here and here Top View 2 Remove the fixture Top View 20 C ET Ultrasonic Flow Transducer System Installation Guide 3 3d Preparing the Pipe cont 3 Clean the area between the marks Remove any loose paint or rust with sandpaper Make sure to preserve the original curvature of the pipe If the finish is mirror smooth use the file to roughen the surface Note Jf you are concerned about removing the reference lines during cleaning use a tape measure and measure 2 ft 60 cm from one of the reference lines and mark another line temporary or permanent This line can be used as a reference point later C ET Ultrasonic Flow Transducer System Installation Guide 21 3 3e Mounting the Transducers If your application requires junction boxes refer to step 1 below e does not require junc
13. ft 1 m from any butt welds or flanges ideally in the center of a 20 diameters of straight run of pipe Keep appropriate clearance on either side of the pipe for easy transducer installation e 6 in 15 cm if you are not using a junction box or e 9 in 23 cm if you are using a junction box Note To guarantee the specified accuracy of the flowmeter there is no substitute for straight run and fully developed flow profile However if straight run is not available the transducer location should be in a position such that the acoustic signal travels through the full distribution of the under developed flow profile for best repeatability 2 Choose a location that has at least 10 pipe diameters of straight undisturbed flow upstream and 5 pipe diameters downstream from the measurement point Providing undisturbed flow means avoiding sources of turbulence such as flanges elbows and tees avoiding swirl and avoiding disturbed flow profiles Never install the flowmeter directly downstream of control valves especially butterfly valves If you cannot find an ideal location use a downstream location of straight run in excess of 5 pipe diameters 3 Place the transducers as close as possible to the horizontal plane Locate the transducers on opposite sides of the pipe 180 apart ideally at the 3 and 9 o clock positions Do not place transducers on the top or bottom of the pipe Transducer Signal Path End View
14. he C ET system is designed to isolate the transducer from the extreme process conditions enabling it to measure high temperature hydrocarbon liquids superheated water heat transfer oils and cryogenic liquids In addition the C ET system retains all of the characteristics that make ultrasonic technology best for critical process measurements under harsh conditions The C ET clamp on ultrasonic flow transducers are used exclusively with the GE line of ultrasonic flowmeters These transducers are used to measure the flow of various liquids through pipes having diameters from 3 in 75 mm to 24 in 600 mm This document provides details on the following topics e Transducer Construction e Installation e Maintenance e Specifications 2 Transducer Construction The C ET transducer consists of a C RS transducer a waveguide and a holder pre assembled from the factory The transducer assembly includes a 316 stainless steel housing with a plastic wedge attached and a BNC type electrical connector The transducer features integral 3 4 NPT M threads for mounting a junction box and integral 5 8 24 threads for mounting a submersible connector if desired see Figure 1 BNC Connector 5 8 UNF Thread 3 4 NPT Thread Figure 1 Transducer Assembly C ET Ultrasonic Flow Transducer System Installation Guide 2 1 Solid Sheet Couplants GE supplies a solid sheet couplant for C ET transducer installations The purpose of the couplant i
15. he fixture Set second block Zero Point on using this edge Measuring Scales _ y Top View 16 C ET Ultrasonic Flow Transducer System Installation Guide 3 3c Installing the Fixture During this procedure you will be required to place the fixture and transducers on the pipe more than once and in some cases as many as 3 times The fixture and transducers are placed on the pipe temporarily to mark where the fixture and transducers make contact with the pipe so those sections can be cleaned Use the steps below to begin installation 1 Remove any pipe insulation from the installation site Note Make sure you clear an area that is large enough for the transducers installation 2 Disassemble the fixture by removing the four nuts from the threaded rods and pulling apart the two halves of the fixture Note Make note of the assembled fixture to make sure you reassemble it the same way Otherwise the transducer spacing will be incorrect Top View C ET Ultrasonic Flow Transducer System Installation
16. ired become loose and fall possibly causing injury Clamping Fixture C ET Ultrasonic Flow Transducer System Installation Guide 37 5 Specifications Table 5 C ET Specifications Primary Use Large Pipes Small Pipes Installation Type Clamp On Material of Construction Waveguide and C RS Transducer Pipe Sizes 3 to 24 diameter Clamping Fixture C ET V C ET PI Operation Frequency 500kHz 1MHZ Electrical Rating 200V peak to peak Ambient Temperature Range 40 to 75 C 40 to 75 C Process Temperature Range 200 to 400 C 200 to 400 C North American Certification Sh Class Division 1 Group B C D Explosion Proof c us European Certification Il 2GD EEx md IIC T6 Tam Flameproof 40 to 75 C KEMA O3ATEX1540X North American Certification i IP66 Type 4X Weatherproof 200 Vpp EmA European Certification Weatherproof IMPORTANT The transducer is protected by a suitable fuse located in the flowmeter electronics The fuse has a breaking capacity in accordance with the short circuit current of the supply 38 C ET Ultrasonic Flow Transducer System Installation Guide Warranty Warranty Each instrument manufactured by GE Sensing is warranted to be free from defects in material and workmanship Liability under this warranty is limited to restoring the instrument to normal operation or replacing the instrument at the sole discretion of GE Sensing Fuses
17. is determined based on the part number of the C ET transducer and it can be found on the C ET label This final assembly consists of a certified transducer marked as GE Infrastructure Sensing 1100 Technology Park Dr Y Billerica MA 01821 USA amp RATINGS 200Vpp 5mA 11 2 GD EEx md IIC T6 IP66 T80 C Tamb 40 C TO 75 C KEMA O2ATEX2337X MODEL CRS XX MB icy CLI DIV1 GP B C D i PART C RS 4XX S N XXXXXXXX Figure 4 C ET Parameters Label The CRS XX MB defines the frequency of the transducers as follows If XX 05 then the frequency 5MHz If XX 10 then the frequency 1MHz Tw Tw time in wedge is determined by the transducer frequency nominal process temperature and ambient temperature using Graph 1 Figure 5 on page 9 or Graph 2 Figure 6 on page 10 based on the transducer frequency As an example If Transducer Frequency 0 5MHz Ambient Temperature 20 C Nominal Process Temperature 340 C Tw would be 150us Wedge Angle Wedge angle is determined by the nominal process temperature and ambient temperature using Graph 3 on page 11 similar to Tw above As an example If Ambient Temperature 20 C Nominal Process Temperature 340 C Wedge Angle would be 57 2 degrees Wedge Soundspeed Wedge soundspeed is always 10104 9 ft s 3080 0 m s for the C ET transducer 8 C ET Ultrasonic Flow Transducer System Installation Guide 9 aanyesadwia ssa301d EUIUON SLE OSE
18. la a 17 SSA O 20 3 36 M nting the ha RSAUGe Sr lt lt zad AZP E ote teat O 22 3 4 Installing the PI Fixture and Transducers cox tae ice ok an inet en ah oa Nag ne are ae a aa 25 3 4a Tools and Equipment Needed ni cn ot oti idas 25 3 4b Preparing the AA piaia WA l sarees ehh ae Sete Ree KA lene EN 26 SAG Ea a a E Arco R EEA ET 26 3 4d Installing the First Mounting BISCK cocos dese hans paa hens bein shade ieee ees 29 3 4e Installing the Second Mounting tr ee le lab a 31 ol AAA A A a a 34 har MGNIEMANCE AN AS NS coe E AAN 37 2 I k a ln gn 38 CET Ultrasonic Flow Transducer System Installation Guide iii Contents iv CET Ultrasonic Flow Transducer System Installation Guide Preface Information Paragraphs Note paragraphs provide information that provides a deeper understanding of the situation but is not essential to the proper completion of the instructions e Important paragraphs provide information that emphasizes instructions that are essential to proper setup of the equipment Failure to follow these instructions carefully may cause unreliable performance e Caution paragraphs provide information that alerts the operator to a hazardous situation that can cause damage to property or equipment e Warning paragraphs provide information that alerts the operator to a hazardous situation that can cause injury to personnel Cautionary information is also included when applicable Safety Issues WARNING I
19. lace the RTV couplant every time the sensor spacing is changed Repeat the procedure steps 5 and 6 if necessary until the soundspeeds are within 0 25 7 Remove the CPL 16 and prepare the transducer for solid couplant C ET Ultrasonic Flow Transducer System Installation Guide 23 3 3e Mounting the Transducers cont Before the C ET transducer can be permanently inserted into the clamp solid sheet couplant must be applied To do this lay the solid sheet couplant over the transducer face and bend the ends over the transducer s heel and toe Temporarily secure the couplant to the heel and toe with electrician s tape Do not apply the tape to the pipe contact surface Tape will burn fall off after time To e Hee Solid Sheet Couplant Figure 9 Applying the Solid Sheet Couplant 8 Install the sensors into the yokes taking care not to shift the couplant Tighten the hold down bolts to 15 ft lbs 20 N m Tighten the backing nut 9 Reinstall the insulation up to the line engraved on the sensors CAUTION Not reinstalling the insulation up to the engraved line could cause permanent damage to the C RS transducer You have completed installing the V clamping fixture and transducers You should do all of the following e Refer to the installation section of your User s Manual or Startup Guide to make transducer connections e Make a note of the installation date and set a schedule for periodic inspection and tightening of clam
20. lines up with the origin line on the pipe Also make sure the front edge of the mounting block is still lined up with the circumferential line When the mounting block is properly aligned tighten the chain to secure it 30 C ET Ultrasonic Flow Transducer System Installation Guide 3 4e Installing the Second Mounting Block 1 On the opposite side of the pipe 180 point mark the transducer spacing point obtained as described on page 8 on the origin line Measure from the zero point Mark the spacing point with a crosshair Zero Point Chain from First Mounting Block Origin Line S Transducer Spacing P int Side View on opposite side of pipe 2 Make a second circumferential line at the transducer spacing mark around the entire pipe circumference Chain from First Mounting Block Origin Line S Transducer Spacin Circumferential Line Side View on opposite side of pipe C ET Ultrasonic Flow Transducer System Installation Guide 31 3 4e Installing the Second Mounting Block cont 3 Line up the other mounting block so it is centered over the origin line and the front edge of the mounting block lines up with the transducer spacing point as shown below IMPORTANT Make sure you use the same edge on both blocks If you do not the transducer spacing will be incorrect 4 Carefully wrap the chain around the pipe taking care not to twist it Hook the chai
21. n into the J hook 5 Tighten the chain around the pipe so the mounting block can be moved for adjustments but not so loose that it will move without being touched First Circumferential Line Same Right Edge of Block Chain from First Mounting Block A Hi Transducer Spacing Point Origin Line Second Circumferential Line Side View Spacing right edge to right edge Top View 32 C ET Ultrasonic Flow Transducer System Installation Guide 3 4e Installing the Second Mounting Block cont 6 Remove the transducer from the first mounting block and install it into the second mounting block Pressure Bolt Ww Circumference Line Origin Scribe Line 7 Use the pressure bolt to secure the transducer Hand tighten it enough to hold the transducer in place Do not overtighten so that the block lifts off the pipe 8 Adjust the mounting block so the center of the waveguide lines up with the origin line on the pipe Also make sure the front edge of the mounting block is still lined up with the circumferential line When the mounting block is properly aligned tighten the chain to secure it 9 Remove the transducer from the mounting block C ET Ultrasonic Flow Transducer System Installation Guide 33 3 4f Mounting the Transducers If your application requires junction boxes refer to step 1 below e does not require junction boxes skip to step 3 1 Apply a thread sealant t
22. ndicated in the shipping instructions 3 Upon receipt GE Sensing will evaluate the instrument to determine the cause of the malfunction Then one of the following courses of action will then be taken e Ifthe damage is covered under the terms of the warranty the instrument will be repaired at no cost to the owner and returned e If GE Sensing determines that the damage is not covered under the terms of the warranty or if the warranty has expired an estimate for the cost of the repairs at standard rates will be provided Upon receipt of the owner s approval to proceed the instrument will be repaired and returned C ET Ultrasonic Flow Transducer System Installation Guide 39 Warranty no content intended for this page 40 C ET Ultrasonic Flow Transducer System Installation Guide 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 An ISO 9001 2008 Certified Company www ge mcs com en about_us quality html www ge mcs com 2013 General Electric Company All rights reserved Technical content subject to change without notice 916 083 Rev B
23. o the transducer threads A sealant is not required within the U S however a sealant must be used in European Communities 2 Before mounting the transducers thread the junction box onto the end of the transducer with the BNC connector Ensure that at least five full threads are engaged Make sure to orient the cover of the junction box so it is accessible to make cable connections once the box is installed 3 If you are using e CPL 16 to confirm the soundspeed of the fluid proceed to the next step e CPL 12 13 14 or 15 proceed to step 7 on the next page 4 Apply a bead of couplant 0 25 in 6 mm wide along the entire length of each transducer face The purpose of the couplant is to expel the air gap between the transducer and the pipe Air will cause the transducer signal to attenuate 34 C ET Ultrasonic Flow Transducer System Installation Guide 3 4f Mounting the Transducers cont 5 Insert the transducers into the mounting blocks making sure the BNC connectors or junction boxes point away from the center of the fixture Tighten the pressure bolts to hold the transducers in place Hand tighten the bolt enough so the transducer makes contact with the pipe a El i o 6 Measured soundspeed should be within 0 25 of the programmed value Reprogram the measured value into the flowmeter and change the sensor spacing as calculated if the difference is greater than 0 25 Replace the R
24. ping fixture nuts to ensure the clamping fixture does not become loose and fall possibly causing injury e Once the flowmeter is up and running measure the signal strength upstream and downstream using the flowmeter s diagnostics menu and make a note of it This value will be helpful when making periodic checks Refer to your User s Manual or Startup Guide for more details 24 C ET Ultrasonic Flow Transducer System Installation Guide 3 4 Installing the PI Fixture and Transducers The PI clamping fixture is used for pipes from 12 to 24 in 300 to 600 mm in diameter It consists of two mounting blocks and chain Installing the PI clamping fixture and transducers requires the following e Preparing the Pipe e Surveying the Pipe e Installing the Fixture e Mounting the Transducer Refer to the following section to properly prepare for installation 3 4a Tools and Equipment Needed Installing the fixture and transducers requires various tools Table 3 Tools for Pl Fixture Installation Fixture and Transducers e Sandpaper File e Ultrasonic thickness gage e Permanent marker e Thread sealant for junction boxes only e 7 16 in crescent box wrench or 4 in adjustable wrench e Other safety equipment suitable for your application C ET Ultrasonic Flow Transducer System Installation Guide 25 3 4b Preparing the Pipe 1 Remove any pipe insulation from the installation site Note Make sure you clear an are
25. rical and Electronic Equipment WEEE Directive GE Measurement amp Control is an active participant in Europe s Waste Electrical and Electronic Equipment WEEE take back initiative directive 2002 96 EC The equipment that you bought has required the extraction and use of natural resources for its production It may contain hazardous substances that 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 If you need more information on the collection reuse and recycling systems please contact your local or regional waste administration Visit http www ge mcs com en about us environmental health and safety 1741 weee reg html for take back instructions and more information about this initiative vi C ET Ultrasonic Flow Transducer System Installation Guide 1 Introduction The clamp on extended temperature C ET range transducer system provides liquid flow measurement in very low or very high temperature applications It represents GE s latest generation of non contact demanding measurement transducers and capitalizes on more than 20 years of experience from the OKS transducer system T
26. s 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 Therefore the C ET transducers should be pressed tightly against the pipe surface GE provides a variety of solid sheet couplants for extremely high and low temperature applications Standard GE couplants are listed in Table 1 Table 1 Solid Sheet Couplants Part No Temp Range Standard 20 to 400 C 4 to 752 F Permanent Cryogenics 250 to 100 C 418 to 212 F Permanent Gold Only Applications 20 to 400 C 4 to 752 F Permanent Zinc Only Applications 20 to 400 C 4 to 752 F Permanent Special As required Difficult Applications Installations where gold or zinc cannot be used Consult GE for these applications 2 C ET Ultrasonic Flow Transducer System Installation Guide 3 Installing the C ET Transducer System GE offers the following fixtures to suit your applications needs e V clamping fixture e PI clamping fixture Figure 2 shows the V and PI fixture assemblies less solid couplant Complete the steps in the following sections to position and install the transducers and fixtures V Fixture Figure 2 V and PI Fixtures C ET Ultrasonic Flow Transducer System Installation Guide 3 3 1 Choosing an Installation Location 1 Locate the transducer measurement point at least 3
27. temperature range of 600 F to 752 F 315 C to 400 C If the fluid is water or liquefied gas determine the temperature and pressure of the application and determine the soundspeed from published papers or third party software 3 3 Installing the V Clamping Fixtures and Transducers Installing the V clamping fixture and transducers requires the following steps Setting the Transducer Spacing e Installing the Fixture e Preparing the Pipe Mounting the Transducers Refer to the following section to properly prepare for installation C ET Ultrasonic Flow Transducer System Installation Guide 13 3 3a Tools and Equipment Needed Installing the fixture and transducers requires various tools Refer to Table 2 below for a complete list of everything you will need Table 2 Tools for V Fixture Installation Fixture and Transducers Straight edge ruler scale e Permanent marker e Sandpaper e File e Tape measure e Thread sealant for junction boxes only e 7 16 in crescent box wrench or 4 in adjustable wrench e in crescent box wrench or 10 in adjustable wrench e Other safety equipment suitable for your application 14 C ET Ultrasonic Flow Transducer System Installation Guide 3 3b Setting the Transducer Spacing 1 If necessary assemble the fixture as shown below Make sure the zero points on each ruler are at the same end of the fixture as shown below
28. tion boxes skip to step 3 1 Apply a thread sealant to the transducer threads A sealant is not required within the U S however a sealant must be used in European Communities 2 Before mounting the transducers thread the junction box onto the end of the transducer with the BNC connector Ensure that at least five full threads are engaged Make sure to orient the cover of the junction box so it is accessible to make cable connections once the box is installed 3 If you are using e CPL 16 to confirm the soundspeed of the fluid proceed to the next step e CPL 12 13 14 or 15 proceed to step 7 on the next page 4 Apply a bead of couplant 0 25 in 6 mm wide along the entire length of each transducer face The purpose of the couplant is to expel the air gap between the transducer and the pipe Air will cause the transducer signal to attenuate 22 C ET Ultrasonic Flow Transducer System Installation Guide 3 3e Mounting the Transducers cont 5 Insert the transducers into the mounting blocks making sure the BNC connectors or junction boxes point away from the center of the fixture Tighten the pressure bolts to hold the transducers in place Hand tighten the bolt enough so the transducer makes contact with the pipe 6 Measured soundspeed should be within 0 25 of the programmed value Reprogram the measured value into the flowmeter and change the sensor spacing as calculated if the difference is greater than 0 25 Rep
29. tis the responsibility of the user to make sure all local county state and national codes regulations rules and laws related to safety and safe operating conditions 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 this equipment during automatic operation and do not enter the work envelope of this equipment during manual operation If you do serious injury can result WARNING Make sure that power to the auxiliary equipment is turned OFF and locked out before you perform maintenance procedures on the equipment Qualification of Personnel Make sure that all personnel have manufacturer approved training applicable to the auxiliary equipment Personal Safety Equipment Make sure that operators and maintenance personnel have all safety equipment applicable to the auxiliary equipment Examples include safety glasses protective headgear safety shoes etc Unauthorized Operation Make sure that unauthorized personnel cannot gain access to the operation of the equipment C ET Ultrasonic Flow Transducer System Installation Guide v Preface Environmental Compliance Waste Elect
30. xture nuts to ensure the clamping fixture does not become loose and fall possibly causing injury e Once the flowmeter is up and running measure the signal strength upstream and downstream using the flowmeter s diagnostics menu and make a note of it This value will be helpful when making periodic checks Refer to your User s Manual or Startup Guide for more details 36 C ET Ultrasonic Flow Transducer System Installation Guide 3 4f Mounting the Transducers cont 10 For permanent applications tighten the locking nut see the figure below for location with a wrench to maintain constant pressure and prevent loosening due to vibration and thermal expansion Locking Nut Side View 4 Maintenance Transducers couplant and the clamping fixture are provided by GE Once you have completed installation little maintenance is required Refer to Table 4 for maintenance information Table 4 Maintenance Checks Interval Maintenance Check Comments Verify every 6 months in Measure the signal strength using diagnostics and No cleaning dry areas e g the desert compare to the value taken at the time of installation required Verify every 12 months in Good and bad limits are listed in the Service Manual or other areas User s Manual Couplant Determined by user Periodic inspection and tightening of clamping fixture No cleaning nuts is required to ensure clamping fixture does not requ
Download Pdf Manuals
Related Search