Dakota-ultrasonics PR-82 Manuel d'utilisateur

OPERATION MANUAL DAKOTA ULTRASONICS MODEL PR-82 SONIC TESTER P/N P-102-0004 Rev 1.90, January 2008

Dakota Ultrasonics 6The Display The numeric portion of the display consists of 4 complete digits preceded by a leading "1", and is used to

PR-82 Sonic Tester 7 When the IN symbol is on, the PR-82 is displaying a thickness value in inches. The maximum thickness that can be displayed is 1

Dakota Ultrasonics 8The Transducer The transducer is the "business end" of the PR-82. It transmits and receives the ultrasonic sound waves

PR-82 Sonic Tester 9 This is a top view of a typical transducer. Press against the top with the thumb or index finger to hold the transducer in plac

Dakota Ultrasonics 10If the Stability Indicator has fewer than five bars darkened, or the numbers on the display seem erratic, first check to make su

PR-82 Sonic Tester 11Condition and Preparation of Surfaces In any ultrasonic measurement scenario, the shape and roughness of the test surface are of

Dakota Ultrasonics 12Probe Zero Setting the Zero Point of the PR-82 is important for the same reason that setting the zero on a mechanical micrometer

PR-82 Sonic Tester 13At this point, the PR-82 has successfully calculated it's internal error factor, and will compensate for this value in any

Dakota Ultrasonics 14Calibration to a known thickness NOTE: This procedure requires a sample piece of the specific material to be measured, the exac

PR-82 Sonic Tester 15Calibration to a known velocity NOTE: This procedure requires that the operator know the sound-velocity of the material to be m

Copyright  2008 Dakota Ultrasonics. All rights reserved. No part of this publication may be reproduced, translated into another language, stored in

Dakota Ultrasonics 16Two Point Calibration NOTE: This procedure requires that the operator has two known thickness points on the test piece that ar

PR-82 Sonic Tester 17Scan Mode While the PR-82 excels at making single point measurements, it is sometimes desirable to examine a larger region, sear

Dakota Ultrasonics 18 TRANSDUCER SELECTION The PR-82 is inherently capable of performing measurements on a wide range of materials, from various meta

PR-82 Sonic Tester 19strength of the waves, and thus, the PR-82's ability to detect the returning echo. Higher frequency ultrasound is absorbed

Dakota Ultrasonics 20Selection of the proper transducer is often a matter of tradeoffs between various characteristics. It may be necessary to exper

PR-82 Sonic Tester 21 APPENDIX A Product Specifications Physical Weight: 10 ounces Size: 2.5W x 4.75H x 1.25D inches (63.5W x 120.7H x 31.8D

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PR-82 Sonic Tester 23 APPENDIX B Application Notes • Measuring pipe and tubing When measuring a piece of pipe to determine the thickness of the pipe

Dakota Ultrasonics 24above this point, the change in sound velocity of the material being measured starts to have a noticeable effect upon ultrasonic

PR-82 Sonic Tester 25An additional important consideration when measuring laminates, is that any included air gaps or pockets will cause an early ref

PR-8 2 Ultrasonic Thickness Gauge CONTENTS INTRODUCTION OPERATION THE KEYPAD THE DISPLAY THE TRANSDUCER MAKING MEASUREMENTS CONDITION AND PREPARATION

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PR-82 Sonic Tester 27 APPENDIX C Sound Velocities of some Common Materials Material sound velocityin/usm/sAluminum0.2506350Bismuth 0.086 2184Brass0.1

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PR-82 Sonic Tester 29 WARRANTY INFORMATION • Warranty Statement • Dakota Ultrasonics warrants the PR-82 against defects in materials and workmanshi

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MATERIAL SAFETY DATA SHEETN/A = not applicable or not available (To comply with 29 CFR 1910.1200)SECTION 1 – PRODUCT IDENTIFICATIONProduct Name: SOUND

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PR-82 Sonic Tester 1 INTRODUCTION The Dakota Ultrasonics model PR-82 is a precision Ultrasonic Micrometer. Based on the same operating principles a

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PR-82 Sonic Tester 3 OPERATION The PR-82 interacts with the operator through the membrane keypad and the LCD display. The functions of the various

Dakota Ultrasonics 4The PRB-0 key is used to "zero" the PR-82 in much the same way that a mechanical micrometer is zeroed. If the tool is

PR-82 Sonic Tester 5 The UP arrow key has two functions. When the PR-82 is in calibration mode, this key is used to increase numeric values on the d