Elcometer SG80, Operating Instructions Manual

Page 1: ...en Model SG80 Sonic Gauge Operating Instructions...

Page 2: ...Manchester M43 6BU United Kingdom All other trademarks acknowledged Elcometer Limited 2011 All rights reserved No part of this document may be reproduced transmitted transcribed stored in a retrieval...

Page 3: ...etting up the Gauge 7 6 Measurement Taking Readings 13 7 Scan mode 15 8 Storage 16 9 Maintenance 16 10 Technical Specification 17 11 Warranty 18 12 Spares 20 13 Transducers 21 14 Condition and Prepara...

Page 4: ...ame operating principles as SONAR the Model SG80 is capable of measuring the thickness of various materials with accuracy as high as 0 01 millimetres 0 001 inches The principal advantage of ultrasonic...

Page 5: ...osed of in an environmentally sensitive manner Consult your Local Environmental Authority for further guidance To maximise the benefits of your new Elcometer NDT gauge please take some time to read th...

Page 6: ...rease quickly Gauge not in calibration mode Switches the Scan measurement mode on and off This key has two functions Gauge in calibration mode Decreases numeric values on the display press and hold to...

Page 7: ...gauge insert bat teries into gauge ensuring correct polarity 4 Replace battery compartment cover Note Remove the batteries from the gauge if it is to remain unused for a long period of time This will...

Page 8: ...used correctly in order for the gauge to produce accurate reliable measurements The illustration shows the two semicircles of the wearface and the barrier separating them on a typical transducer One...

Page 9: ...tery voltage is low the entire display will begin to flash When this occurs the batteries should be replaced Stability indicator One vertical bar no readings are being taken Less than 5 bars read ing...

Page 10: ...ure that the zero point of the instrument is always correct The zero probe routine must be done prior to calibration 1 Switch on the gauge and connect the transducer 2 Remove all couplant from the fac...

Page 11: ...l is 5918 m s about 0 233 in s and the velocity of sound through aluminium is 6350 m s about 0 248 in s If the gauge is not set to the correct sound velocity all of the measurements the gauge makes wi...

Page 12: ...the actual material velocity intended to be measured One point Thickness Calibration You should always calibrate on the high side of the intended range of material thicknesses you will be measuring Fo...

Page 13: ...ibration For example if the measurement range is 2 03 mm to 6 35 mm 080 to 0 250 perform the first calibration on a known thickness sample close to 6 35 mm 250 followed by the second calibration close...

Page 14: ...ff 5 Use the and arrows to adjust the displayed thickness until it matches the thickness of the sample of material 6 Press The display flashes 1OF2 7 Repeat steps 2 to 6 this time with the transducer...

Page 15: ...e reading is stable and the repeatability indicator in the top left corner of the display is fully lit and stable 2 Press On the display M s or IN s will start flashing on and off 3 Use the and arrows...

Page 16: ...to the material surface Irregular and inaccurate readings may result Again the user is responsible for proper use and interpretation of the measurements acquired 6 1 BEFORE YOU START Prepare the surf...

Page 17: ...ilm of couplant beneath the transducer and that the transducer is seated flat against the material The gauge will perform a number of measurements every second when the transducer is in contact with t...

Page 18: ...second but does not display them instead the display shows a moving series of dashes While the transducer is in contact with the material being measured the gauge memorises the lowest measurement it...

Page 19: ...e many years reliable service under normal operating and storage conditions The gauge does not contain any user serviceable components In the unlikely event of a fault the gauge should be returned to...

Page 20: ...including batteries 284 g 10 oz Dimensions W x H x D 63 5 mm x 114 3 mm x 31 5 mm 2 5 x 4 5 x 1 24 Gauge Operating Temperature 30 C to 50 C 20 F to 120 F Case Aluminium case with gasket sealed end ca...

Page 21: ...g from improper or inadequate maintenance by the customer unauthorised modification or misuse or operation outside the environmental specifications for the product Elcometer NDT makes no other warrant...

Page 22: ...For products that require servicing Elcometer NDT may use one of the following methods Repair the product Replace the product with a re manufactured unit Replace the product with a product of equal or...

Page 23: ...Potted Side Transducer TX2M25CP 2 5 MHz 1 4 Potted Side Transducer TX5M00CP 4 5 MHz 1 4 Potted Side High Damped Transducer TX5M00CP 10 7 MHz 1 4 Potted Side High Damped Transducer TX7M50CP 6 10 MHz 1...

Page 24: ...begin with the stronger its return echo will be Initial signal strength is largely a factor of the size of the ultrasound emitter in the transducer A large emitting area will send more energy into the...

Page 25: ...CTING THE CORRECT TRANSDUCER Elcometer NDT has a complete range of transducers to meet your requirements including A range of frequencies and sizes Straight and right angle Transducers available as po...

Page 26: ...inst the surface Often a wire brush or scraper will be helpful in cleaning surfaces In more extreme cases rotary sanders or grinding wheels may be used though care must be taken to prevent surface gou...

Page 27: ...ar to the long axis of the pipe another with the gap parallel to the long axis of the pipe see illustration The smaller of the two displayed values should then be taken as the thickness at that point...

Page 28: ...NATED MATERIALS The density and therefore sound velocity of laminated materials may vary considerably from one piece to another Some laminated materials may even exhibit noticeable changes in sound ve...

Page 29: ...5232 0 206 PVC 2388 0 094 Copper 4674 0 184 Quartz Glass 5639 0 222 Epoxy Resin 2540 0 100 Approx Rubber Vulcanised 2311 0 091 German Silver 4750 0 187 Silver 3607 0 142 Glass Crown 5664 0 223 Steel...