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DMTA-20006-01EN, Rev. B, February 2014

Chapter 2

 

26

5.

Reinstall the outer probe-holder arm:

a)

Engage the outer probe-holder-arm pin in the other mounting hole in the 
wedge.

b)

Ensure that the outer probe-holder arm is parallel to the inner probe-holder 
arm.

c)

Tighten the outer probe-holder-arm screw.

6.

Ensure that the probe and wedge assembly is free to rotate around the pins 
without presenting lateral movement.

2.4

Adjusting the Length of Exposed Cables and Tubes

After replacing a probe or reconfiguring the COBRA scanner for another pipe size, 
you need to adjust the length of exposed cables and tubes.

To prevent damaging the probe and encoder cable, always carefully adjust their 
length to fit the circumference of the scanner posts.

You do not need to remove the sleeve clamp to adjust the length of exposed cables and 
tubes.

To adjust the length of exposed cables and tubes

1.

To gain more exposed cables and tubes length at the scanner end, hold the free 
end of the protective sleeve, and pull the cables and the tubes through the 
protective sleeve from the scanner end.

2.

To remove excess length at the scanner end, hold the tail of the scanner, and pull 
the cables and the tube through the protective sleeve.

3.

On the scanner, clip the cables and the tube into the cable-management posts (see 
Figure 2-6 on page 27).

Содержание COBRA

Страница 1: ...Manual This instruction manual contains essential information on how to use this Olympus product safely and effectively Before using this product thoroughly review this instruction manual Use the prod...

Страница 2: ...y of the information contained therein and corresponds to the version of the product manufactured prior to the date appearing on the title page There could however be some differences between the manu...

Страница 3: ...e of Visual Interferences or Phantom Spots 7 Safety Symbols 8 Safety Signal Words 8 Note Signal Words 9 Safety 9 Warnings 10 CE European Community 10 WEEE Directive 10 Warranty Information 11 Technica...

Страница 4: ...35 2 7 Using the Wedge Separation Indicators 41 2 8 Operating the Scanner 43 3 Maintenance and Troubleshooting 47 3 1 Cleaning the Scanner 47 3 2 Troubleshooting 47 4 Accessories and Spare Parts 51 4...

Страница 5: ...N Rev B February 2014 List of Abbreviations v List of Abbreviations AOD axial outside diameter CE european community ID inside diameter LW longitudinal wave OD outside diameters SW shear wave UT ultra...

Страница 6: ...DMTA 20006 01EN Rev B February 2014 List of Abbreviations vi...

Страница 7: ...the instrument are shown in Figure i 1 on page 1 If any or all of the labels or symbols are missing or illegible please contact Olympus The descriptions of the symbols are provided in Table 1 on page...

Страница 8: ...onformity for details Contact your Olympus representative for more information The WEEE symbol indicates that the product must not be disposed of as unsorted municipal waste but should be collected se...

Страница 9: ...the circumference around the pipe The COBRA scanner is intended for both dual and single probe scanning applications The COBRA scanner is intended to operate in an environment as described in Table 11...

Страница 10: ...on COBRA U8750053 Small pipe scanner kit with encoder to cover 21 3 mm to 114 3 mm pipe outside diameters OD Packaged in hard carrying case 2 25CCEV35 A15C P 2 5 OMa U8331117 2 25 MHz low profile phas...

Страница 11: ...n the elevation with a 35 mm radius The cable is 2 5 m long with OmniScan connector COBRA A SA15 U8721205 Two flat shear wave SW wedges plus ten pairs of curved shear wave SW wedges to cover the 21 3...

Страница 12: ...connectors to support two phased array probes E128P0 0000 OM U8800428 Phased array cable extensions required to interface between the Omni A ADP05 and an OmniScan MX2 instrument with PA1 128 elements...

Страница 13: ...nces are temporary and their persistence is not permanent in comparison with physical features of the inspected part C1 DE15F BXM 0 30M U8767107 0 3 m long adapter DE 15 female to Bendix male linking...

Страница 14: ...oid possible harm Safety Signal Words The following safety symbols might appear in the documentation of the instrument The DANGER signal word indicates an imminently hazardous situation It calls atten...

Страница 15: ...the instrument The IMPORTANT signal word calls attention to a note that provides important information or information essential to the completion of a task The NOTE signal word calls attention to an...

Страница 16: ...by the equipment could be impaired Do not install substitute parts or perform any unauthorized modification to the instrument CE European Community WEEE Directive This device complies with the require...

Страница 17: ...acement if necessary This instruction manual explains the proper operation of your Olympus product The information contained herein is intended solely as a teaching aid and shall not be used in any pa...

Страница 18: ...DMTA 20006 01EN Rev B February 2014 Important Information Please Read Before Use 12...

Страница 19: ...non destructive inspection of pipes with outside diameters ranging from 21 3 mm to 114 3 mm 0 84 in to 4 50 in The COBRA scanner typically uses the OmniScan models can vary with a 16 64 or a 16 128 m...

Страница 20: ...ner can hold two phased array probes for a complete inspection of the weld in one pass For pipe to component inspections the scanner can be quickly configured to make one sided inspections with only o...

Страница 21: ...supporting one or two probes The COBRA scanner provides a kit of parts that you can easily assemble thus configuring the scanner to fit on the outside diameter of the pipe to be inspected see Figure 1...

Страница 22: ...for pipe OD smaller than 2 50 in and Table 16 on page 66 for pipe OD larger than 2 50 in Pairs of wedges with appropriate curvatures are used to cover the pipe outside diameter range see Table 7 on pa...

Страница 23: ...side includes the encoder that provides the position of the scanner around the pipe You can also use only the encoder side of the scanner to inspect the pipe to component interfaces see Figure 1 4 on...

Страница 24: ...ates provide configuration patterns for standard tube and pipe outside diameters see Table 3 on page 19 You cannot use the setup templates for nonstandard pipe sizes see section Configuring the Scanne...

Страница 25: ...ate for smaller sizes Setup template for larger sizes in mm in mm 0 840 21 34 0 875 22 23 1 000 25 40 1 050 26 67 1 125 28 58 1 315 33 40 1 315 33 40 1 375 34 93 1 500 38 10 1 660 42 16 1 750 44 45 1...

Страница 26: ...nner are included with the COBRA scanner see Table 4 on page 20 and Figure 1 6 on page 20 Figure 1 6 Tools included with the COBRA scanner Table 4 Required tools included with the scanner Quantity Des...

Страница 27: ...rdered as a kit COBRA K XXX the one or two probes are already installed on the COBRA scanner at the factory Therefore when you want to configure the scanner using the setup template you need to remove...

Страница 28: ...only in the cable management portion of the tail 2 Using the yellow loom installation tool insert the protective sleeve over the cables and the tube as follows see Figure 2 2 on page 23 a Starting at...

Страница 29: ...Slide the protective sleeve over the cable management portion of the tail d Tighten the sleeve clamp screw until sufficiently snug see illustration B e Ensure that the sleeve clamp is oriented so tha...

Страница 30: ...Tighten the outer probe holder arm screw 7 Ensure that the probe and wedge assembly is free to rotate around the pins without presenting lateral movement 8 Adjust the length of the exposed cables and...

Страница 31: ...ner 2 Unscrew the two screws holding the probe to the wedge 3 Assemble the probe and the new wedge a See Table 7 on page 55 to select the appropriate wedge for the outside diameter of the pipe to be i...

Страница 32: ...adjust the length of exposed cables and tubes To prevent damaging the probe and encoder cable always carefully adjust their length to fit the circumference of the scanner posts You do not need to remo...

Страница 33: ...ing a setup template simplifies the scanner setup and eliminates the need for an actual pipe sample To configure the scanner using the setup template 1 You first need to disassemble the scanner compon...

Страница 34: ...le 15 on page 65 for pipe OD smaller than 2 50 in and Table 16 on page 66 for pipe OD larger than 2 50 in c On the setup template locate the correct size setup pattern for the encoder side configurati...

Страница 35: ...ate pocket see Figure 2 8 on page 29 Figure 2 8 Insert the tail in its setup template pocket c While holding the tail assembly in the pocket from the opposite side firmly tighten the tail adjustment s...

Страница 36: ...te the tail outward and then fully inward so that the tail wheel is positioned closest to the center of the setup pattern with the correct spring load see in Figure 2 10 on page 30 Figure 2 10 Rotatin...

Страница 37: ...and then retighten the probe holder position screw Figure 2 12 Adjusting the probe holder position c Install the appropriate wedge and the probe on the probe support see section Changing the Wedge on...

Страница 38: ...Figure 2 13 on page 32 Figure 2 13 Installing the probe holder into the setup template 6 On the setup template install the required male links or long links into their respective pockets see Figure 2...

Страница 39: ...mm 1 315 in rotate the probe holder inward until the wedge touches the inside edge of the through hole portion of the template see Figure 2 16 on page 33 Figure 2 16 Rotating the probe holder to set...

Страница 40: ...ing the probe holder assembly outward until the probe and wedge can slide back into the through hole see Figure 2 18 on page 34 d Lower the scanner fully into the setup template e Rotate the tail inwa...

Страница 41: ...For outside diameters greater than 32 5 mm 1 280 in use two crossbars 1 Slide one crossbar through the link of each probe holder and then clamp the cross bar in the desired position with the crossbar...

Страница 42: ...nks see Figure 2 19 on page 36 Figure 2 19 Loosening the links If the joints do not rotate freely with the pivot screws loose you may have to break them loose by hand using a little force 3 For single...

Страница 43: ...the crossbar screw b For outside diameters greater than 32 5 mm 1 280 in use two crossbars 1 Slide one crossbar through the link of each probe holder and then clamp the cross bar in the desired positi...

Страница 44: ...smaller than 2 50 in and Table 16 on page 66 for pipe OD larger than 2 50 in c See Table 7 on page 55 to select the appropriate wedge for the outside diameter of the pipe to be inspected 6 As require...

Страница 45: ...the probe holder see Figure 2 23 on page 39 a Loosen the probe holder position screw b Slide the probe holder to position noted in step 5 b and then retighten the probe holder position screw Figure 2...

Страница 46: ...2 24 Wrapping and holding the scanner b Ensure that all wheels are contacting the pipe surface To help ensure that the wheels make contact with the pipe surface lift the probe holder s and the tail s...

Страница 47: ...the couplant tubes and the probe cables to the cable management posts 2 7 Using the Wedge Separation Indicators For dual probe scanning the wedge separation indicators along with the 1 mm graduations...

Страница 48: ...page 42 Figure 2 26 Bringing the wedge faces together 6 Slide the crossbar s to the right so that the wedge separation indicator s makes contact with the right hand link see Figure 2 26 on page 42 7...

Страница 49: ...the wedge separation 10 Once the desired separation is obtained tighten the right hand side crossbar screw s Once the wedge separation indicators are set as per the above instructions to change the w...

Страница 50: ...rate the scanner 1 Clip the scanner onto the pipe to be inspected a Pull the probes open by hand see Figure 2 28 on page 44 Figure 2 28 Installing the scanner on the pipe b Once the probes are engagin...

Страница 51: ...rotate around the complete circumference of the pipe and that the cable and tube bundle wraps and unwraps without interference from surrounding structures b Ensure that the weld is centered between t...

Страница 52: ...10 Remove the scanner from the pipe When the scanner is configured for two sided inspection simply pull on the cross bar OR When the scanner is configured for one sided inspection pull on the cable p...

Страница 53: ...Troubleshooting 47 3 Maintenance and Troubleshooting 3 1 Cleaning the Scanner Wipe the COBRA scanner clean as required Do not soak or submerge the scanner in any cleaner or solvent 3 2 Troubleshootin...

Страница 54: ...the Setup Template on page 35 Incorrect tail setting Check the setup chart see section Scanner Setup Charts on page 64 to find the required tail setting for the outside diameter of pipe you are inspe...

Страница 55: ...th the scanner removed from the pipe force the probe holder inward slightly by hand to provide more preload of the wedge on the inspection surface Ensure that on installation of the scanner onto the p...

Страница 56: ...DMTA 20006 01EN Rev B February 2014 Chapter 3 50...

Страница 57: ...14 Accessories and Spare Parts 51 4 Accessories and Spare Parts The COBRA scanner features numerous parts components and accessories This chapter presents the following sections Ordering Part Numbers...

Страница 58: ...d carrying case 2 25CCEV35 A15C P 2 5 OMa U8331117 2 25 MHz low profile phased array probe with 16 elements 0 5 mm pitch and 10 mm elevation The elements are curved on the elevation with a 35 mm radiu...

Страница 59: ...wedges to cover the 21 3 mm to 114 3 mm 0 84 in to 4 50 in pipe outside diameter range COBRA A SA15LW U8722168 Two flat longitudinal wave LW wedges plus ten pairs of curved longitudinal wave LW wedge...

Страница 60: ...upport two phased array probes E128P0 0000 OM U8800428 Phased array cable extensions required to interface between the Omni A ADP05 and an OmniScan MX2 instrument with PA1 128 elements module EIB64 NT...

Страница 61: ...strument Table 7 Wedge selection chart Wedge part number Wedge AODa a axial outside diameter AOD Pipe min ODb b outside diameter OD Pipe max ODb in mm in mm in mm SA15 N60S IH AOD0 84 0 840 21 3 0 800...

Страница 62: ...r longitudinal wave inspection is 25 mm with SA15 or 35 mm with ST1 and right angle cable connector SA15 N60S IH AODxxx AOD axial outside diameter H for scanner mounting holes I for irrigation S for s...

Страница 63: ...A 2 Barbed T splitter for 1 16 in inside diameter ID tube B 8 Tubing 1 16 in ID X 0 09 in OD C 2 Barbed Y splitter for 1 16 in ID tube D 2 Barbed reducer for 1 16 in to 3 32 in ID tube E 8 Blue 4 mm...

Страница 64: ...N Rev B February 2014 Chapter 4 58 4 2 Spare Parts An exploded view and a list of spare parts for the COBRA scanner are provided in Figure 4 3 on page 58 and Table 9 on page 59 respectively Figure 4 3...

Страница 65: ...72 N A Link assembly male 5 25AA2123 U8909468 N A Probe holder assembly left 6 KITX0306 U8908979 COBRA SP YOKEARM Pair of yoke arms with screws for one yoke 7 25AA2124 U8909469 N A Probe holder assemb...

Страница 66: ...DMTA 20006 01EN Rev B February 2014 Chapter 4 60...

Страница 67: ...vironment Specifications Table 10 General specifications Parameter Value Diameter range 21 3 mm to 114 3 mm 0 84 in to 4 50 in Half scanner widtha a Not including probe cables and couplant tubes 59 mm...

Страница 68: ...cifications Parameter Value Operating temperature 5 C to 50 C 41 F to 122 F Storage temperature 30 C to 60 C 22 F to 140 F Relative humidity RH Max 80 RH noncondensing Wet location Yes Altitude Up to...

Страница 69: ...niScan MX2 pinout for the scanner interface LEMO connector Pin Signal Description 1 N A Not used 2 5 V External power supply 3 N A Not used 4 N A Not used 5 N A Not used 6 N A Not used 7 N A Not used...

Страница 70: ...used 14 N A Not used 15 N A Not used 16 GND Ground Case Shield Ground earthing Table 14 Standard phased array probe specifications Parameter Value Part number 7 5CCEV35 A15 P 2 5 OM Frequency 7 5 MHz...

Страница 71: ...1 05 to 1 10 26 7 to 27 9 1 Extended 1 1 1 10 to 1 15 27 9 to 29 2 2 1 15 to 1 21 29 2 to 30 7 3 1 21 to 1 28 30 7 to 32 5 4 1 28 to 1 36 32 5 to 34 5 1 Extended 1 2 1 36 to 1 43 34 5 to 36 3 2 1 43...

Страница 72: ...2 to 81 0 1 5 Extended 2 1 2 3 19 to 3 28 81 0 to 83 3 2 5 3 28 to 3 39 83 3 to 86 1 4 3 39 to 3 45 86 1 to 87 6 1 5 Extended 1 2 1 2 3 45 to 3 55 87 6 to 90 2 2 5 3 55 to 3 67 90 2 to 93 2 4 3 67 to...

Страница 73: ...probe and the wedge on the scanner 24 Figure 2 5 Changing the wedge on the scanner 25 Figure 2 6 Clipping the tube and the cable on the post 27 Figure 2 7 The tail adjustment screw 28 Figure 2 8 Inser...

Страница 74: ...39 Figure 2 24 Wrapping and holding the scanner 40 Figure 2 25 Placing the wedge separation indicator 42 Figure 2 26 Bringing the wedge faces together 42 Figure 2 27 Reading the wedge separation 43 Fi...

Страница 75: ...t numbers 52 Table 7 Wedge selection chart 55 Table 8 Fittings and tubing spare parts list P N COBRA SP IRRIGATION 57 Table 9 COBRA scanner part list 59 Table 10 General specifications 61 Table 11 Ope...

Страница 76: ...DMTA 20006 01EN Rev B February 2014 List of Tables 70...

Страница 77: ...configuration one sided scanner 17 configuring probe holder 31 39 scanner using the setup template 27 scanner without the setup template 36 tail 28 39 connector adaptors LEMO DE 15 62 connector pinou...

Страница 78: ...ers basic kit 57 ordering 52 spare 58 spare fittings and tubing 57 performing the inspection 45 phantom spots presence of 7 pinout OmniScan MX2 scanner interface con nector 63 precautions safety 9 pro...

Страница 79: ...ety 8 warning 2 WEEE 2 T tail configuration 28 39 technical support 11 TIP signal word 9 tools required 20 Torx screw driver 20 troubleshooting 47 tubing part numbers 57 U use intended 3 using the wed...

Страница 80: ...DMTA 20006 01EN Rev B February 2014 Index 74...

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