Momento DELTA SIGMA Operator'S Manual Download Page 13 | Manualshive

Page: 13 / 33

Momento DELTA SIGMA Operator'S Manual Download Page 13

Document No: DELTA SIGMA-USM

Version 4

Revision 3.94.2

Page: 12 / 32

2.5

MEASURE BOLTS

You are now ready to do measurements.

Attach the transducer to the bolt. Make sure to apply a thin

layer of ultrasonic couplant between the bolt and transducer

and carefully rock the transducer onto the center of the bolt

head or end. Then press

MEASURE.

Please note: There can be no air gap between the transducer

and the bolt. Ultrasound do not travel in air.

If the bolt surface has protruding marking, this must be

grinded down or otherwise removed. Please see YouTube

video on bolt ends and surface roughness.

If no temperature probe is attached, push the temperature

button and manually enter the temperature. Then push

CONTINUE.

Let the instrument work for a few seconds while it determines

the best echo peak for this bolt. The LED-light will flash

red/green while working.

Standard Magnetic Transducer

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Summary of Contents for DELTA SIGMA

Page 1: ...www momento se OPERATORS MANUAL DELTA SIGMA Ultrasonic instrument...

Page 2: ...S 5 2 3 SETUP SCREEN 7 2 4 MEASUREMENT PROCESS 8 2 5 MEASUREBOLTS 12 2 6 MEASURENEW BOLT 16 2 7 EXPORT EXCELFORMAT DATAFROM THEDS TOAPC 17 2 8 EXPORT SYSTEM PROJECT DATAFROM THEDS TOAPC 20 2 9 IMPORTA...

Page 3: ...te the difference between that Reference time and the as found time This delta time is directly proportional to the load or stretch in the fastener The intuitive software was created specifically for...

Page 4: ...touch screen Data and digital signal traces are stored for later display and transfer The unit has automatic temperature compensation from an included magnetic temp probe For data integrity the DS mem...

Page 5: ...32 2 OPERATION OF THE DS 2 1 OVERVIEW TEMPERATUREPROBEPORT 3 PINLEMO TRANSDUCER PORT PULSE ECHO P E SINGLE PIN LEMO PITCH CATCHPORT P C SINGLE PIN LEMO I OPORT 6PINLEMO POWER ON LEDINDICATOR PROCESSO...

Page 6: ...ent diameters and lengths types The data structure used in the DS is setup to accommodate this logical bolted joint structure The Project file includes the basic joint information and stores the Lengt...

Page 7: ...ive Time Date button Here you can easily adjust the time and date if you are in another time zone The instrument is now ready to use In order to start measuring connect the transducer and the temperat...

Page 8: ...y settings only password required CALIBRATION Enter this option if you want to calibrate your DS SECURITY Lock Out function for bolt data settings Password is 1 2 3 4 OPTIONS In this screen you can ch...

Page 9: ...n PROJECTLISTSCREEN Here all previous projects will be listed If there are no projects stored in the DS the page will be empty like shown on the picture above except for the Operation Subsea button Se...

Page 10: ...e you press SAVE button the project is saved If you want a short report Press short If you want a long report Press long All data is stored in the DS so this is changeable This can be changed at a lat...

Page 11: ...ons shown below Stress and Temperature Factor and details are default values from material choice The SF and TF of the selected material in screen 1 will appear Temperature and Stress Factors are list...

Page 12: ...l return to the Bolt Information Screen The number of pulse cycles used to excite the transducer is a function of transducer frequency and size For most applications 2 cycles is sufficient For very lo...

Page 13: ...note There can be no air gap between the transducer and the bolt Ultrasound do not travel in air If the bolt surface has protruding marking this must be grinded down or otherwise removed Please see Yo...

Page 14: ...ucer and the instrument Then check the transducer to see if it is damaged Apply more couplant and verify the bolt information Then hit RETRY If you are using standard settings and the Ref Len is withi...

Page 15: ...bolt screen When you are about to do the elongation measurement select the bolt and you will see the Elongation window In the Elon screen the elongation will be displayed in real time as shown You ca...

Page 16: ...before or after the true end reflection Depending on the profile of the end region you may want to adjust the receiver to read the echo time off the recess feature or go by it to the end reflection I...

Page 17: ...be read by pushing the displayed number button This will bring up the new bolt screen the next bolt in sequence will be queued pushing the OK button will bring the program back to the Bolt Info Screen...

Page 18: ...le drive from the system binary Project files in the secure drive Before you connect the DS to your PC you should make the system bolting data readable The default setting is CSV Return to the main Bo...

Page 19: ...o the USB port as a Removable Drive This visible drive is the public drive when you plug a USB from a PC into the DS This public drive appears in Explorer This drive holds the user data files created...

Page 20: ...to the file path where you stored the DATAFILES folder Find the required document named project name csv MS Excel will ask you if you want to use Data using column tabulators etc Press Next and then...

Page 21: ...Select FILEBACKUP 4 Here you can SELECT the individual files or BACKUP ALL to write the system data files to the public drive B a If you SELECT individual project files be sure to Backup All bolt typ...

Page 22: ...t Removable Disk Whatever DS drive 4 Copy all files and folders from PC to DS Drive 5 Unplug USB cable 6 From MAIN menu select SETUP 7 Select FILEBACKUP 8 Here you can SELECT the individual files or R...

Page 23: ...t Check Cable connection Check Bolt Transducer contact and bolt end finish 2 9 2 Boltlength displayed is notwithin2 4 of actual measuredlength Mode Conversion This may be from a property common in lon...

Page 24: ...storage options no limits on bolts or load data Store and display echo traces of every signal for every reading date time stored with each reading Weight Dimensions Small lightweight rugged 7x7x1 7 I...

Page 25: ...rs with SOC monitoring The DS can be sent or carried onboard airplanes as it meets current ITAR FAA Lithium Metal Batteries contained in equipment regulations UN3481 P I 967 Section II o Acceptable to...

Page 26: ...250 0 296 0 490 56 55 80 62 64 101 99 144 111 115 232000 232000 230000 225000 245000 5892800 5892800 5840000 5710000 6220000 29 9 30 29 31 16 5 205 207 200 214 114 ASTM SPECIFICATIONS A193 B7 A193 B16...

Page 27: ...0 or equivalent For bolts to be used in high temperatures use Loctite 638 or equivalent 3 Place the transducer on the glue align the transducer at the centre Use a pin or a pair of tweezers Then press...

Page 28: ...es for the bolt or stud See Appendix D for geometric terms Enter thread pitch or threads per inch The Engagement Factor is the percentage of the diameter at the thread or head section that carries see...

Page 29: ...is found by adding the stud diameter to the clamp length Engagement factor 1 0 50 Engagement factor 2 0 50 This is a typical through bolt configuration The effective length of a bolt with a single nu...

Page 30: ...material which experiences the applied tensile stress For a cylindrical bolt the area may be approximated as follows Where D the root diameter of the bolt thread More precise calculation of the stres...

Page 31: ...d length is equal to the clamp length of the joint plus the nominal bolt diameter The Load Factor elongation in N per 0 1 of a mm is calculated by solving the above equation for Hooke s Law while sett...

Page 32: ...x3mm Glue on transducers P N 3000 01 The glue on transducers comes in sheets of 100 transducers They are simply glued on the bolts and tested by using the 4000 TC or 4000 RH cable 0 75 19mm MicroDot C...

Page 33: ...P O Box 14 642 21 Flen Sweden VISITING ADDRESS Kungsv gen 68 642 34 Flen Sweden CONTACT US 46 157 690 00 info momento se www momento se MOMENTO OPERATORS MANUAL ULTRASONIC INSTRUMENT DELTA SIGMA...

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