Home

Delta

1. Thicknessmeter Ultrasonic Defectoscoping Contactless Electromagnetoacoustic YT 04 SMA Delta certificated in Ukraine and Russia USAGE Thickness measurement of metalware made from conductive materials with one side access corrosion estimation of unapproachable surfaces APPLICATION The device can be used in field conditions as well as in workshops and labs of enterprises for residual thickness testing of metalware suffering corrosion PRINCIPLE OF OPERATION In the Thicknessmeter electromagnetic acoustic EMA mode of excitation and shear vibrations receiving is used It allows measuring thickness without contact liquid and surface conditioning through air gap or nonconducting coating paint varnish enamel film about 2 mm thick DISTINCTIVE FEATURES Accumulation of echo signals during series of soundings is applied to registration of impaired bottom impulses increasing signal amplitudes by not less than 25 db and signal noise ratio by 12 5 db The indicator of the Thicknessmeter shows echogram sounding and subsequenily reflected bottom impulses This allows using the device as defectoscope and in thickness metering mode selecting the most distinct pair of bottom impulses for measurement Material number item number and up to hundred echograms screens are stored in the memory Data can be transmitted to external computer SPECIFICATIONS Range of measured metalware thicknesses mm 1 0 200 Limit of thicknessmeter measuring erro
2. adily detectable when stratification plane is perpendicular to oscillations direction of transverse wave of EMA transducer B 4 wave propagation b is not detected at 90 turn of EMA transducer in test not detectable point in respect of its position as per item a i e when stratification plane is parallel to a direction of oscillations of a transverse wave of EMA transducer Thickness measurement of without complications and restrictions complicated or impossible without special B 5 walls of vessels and pipes measures filled with liquid Thickness measurement of readily performed only metal thickness is measured as a rule total thickness of metal and deposits is walls covered from the measured or thickness measurement as such is B 5 1 Maa sae inaccessible side with scale complicated or salt deposits Resolution twice as good as with oscillations induced by contact half as good as with EMA thickness gauge UT 04 B 6 piesotransducer EMA Delta Possibility to work with a always possible even preferable never possible measure through gap without gap several mm wide contact with tested metal without touching with B 7 transducer of test surface without contacting the surface Abrasion of transducer of does not occur as EMA transducer never gets abrasion of piesotransducer is high it endures B8 thickness gauge abraded Always possible to work with a protector and some months of c
3. ces Comparative tables of efficiency of thickness measurements of metal with electromagneto acoustic non contact thickness gauge UT 04 EMA Delta and traditional contact ultrasonic thickness gauges Table A A Enumeration of obligatory technological operations at thickness measurements with EMA thickness gauge UT 04 EMA Delta and traditional contact thickness gauge with piesotransducer Description and content of EMA thickness gauge UT 04 EMA Delta T raditional contact thickness operation gauge with piesotransducer A 1 Scraping off rust scale not required if these are not strata several and more mm always necessary thick A 2 Scraping off roughness not required if roughness features are below 2mm always necessary A3 Scraping off paint layer or removal not required if thickness of paint layer or any coating is below always necessary of protective coating film 2 3 mm Restoration of paint layer or any only at exceeding 2 3 mm thicknesses as thinner coatings always necessary AA i i other protective coating should not be removed E Application washing away of Sievert always necessary contact liquid Table B B Comparison of the factors affecting productivity cost price reliability at thickness measurements with electromagneto acoustic non contact thickness gauge UT 04 EMA Delta and traditional contact ultrasonic thickness gau
4. description and Delta piesotransducer content Scraping off roughness necessary only in rare always necessary of tested surface cases when the signal 1 vanishes because of a D 1 rough relief of the surface Scraping off restoration only at thicknesses of always necessary D 2 of protective paint and paint or other coating other coating exceeding 2mm D3 Application removal of never required always necessary contact liquid Degreasing of surface never required always necessary D 4 after contact liquid removal Correct orientation of the never required obligatory from tenths transducer on tested of seconds to several surface strictly minutes D 5 perpendicularly to tested surface Performance of individual thickness Digo oo without Similar time input taking into account preparatory operations Defectoscopy after several times less than duration and volumes of thickness measurement with thickness defectoscopy remain D 7 measurement using almost not reduced after contact piesotransducer contact thickness measurement Total time of individual 10 100 less than with 10 100 longer than with D 8 thickness measurement contact thickness gauges EMA thickness gauges in view of the totality of with piesotransducer preparatory works D 9 Repair of transducers Only at a casual or negligent putting the gauge out of operation regular
5. ges with piesotransducer N Description and EMA thickness gauge UT 04 EMA Delta Traditional contact thickness gauge with content piesotransducer Work under any low contact liquid is never necessary no special additional contact liquid is always necessary and at low ambient temperature complications caused by low temperature temperatures only special and very expensive B 1 time for application and removal of contact liquid is always required Work on hot metal up to contact liquid is never necessary no special additional contact liquid is always necessary and at such high 700 C complications caused by high temperature Sometimes temperatures special and very expensive cooling of EMA transducer is desirable time for application and removal of contact liquid is always required moreover on such a hot surface piesoceramics of the transducer behaves badly at B 2 high temperatures thus reliability and reliability of testing is reduced often piesotransducers are already inoperative at such temperatures without cooling Stratification of metal readily detectable with EMA thickness measurements B 3 ae not detected at all which plane is thickness gauge gives also stratification depth and perpendicular to direction of wave propagation thickness of the metal containing such stratification Detecting of stratification of metal which plane is parallel to direction of a re
6. ion connection of thickness gauge through B 15 Sees on order always similar devices unknown mobile communication network and the Internet Volumes of defectoscopic B 16 data after 100 of metal substantially lower are not reduced thickness measurements Thickness measurement on thickness measurement is carried out without performance of measurements on curved surfaces curvilinear surfaces with restrictions with the same transducer at any curvature with flat transducer because of insignificant small radius of curvature and without changing the transducer at transition from contact of the surface with piesotransducer is B 17 R several mm flat to curvilinear surfaces impossible or use of a set of transducers for work on curved surfaces of only one certain radius for each transducer is necessary Table C C Materials and equipment input in technological operations of thickness measurement with non contact thickness gauge UT 04 EMA Delta and traditional contact ultrasonic thickness gauges with piesotransducer N Materials and equipment EMA thickness gauge UT 04 EMA Delta Traditional contact thickness gauge with for piesotransducer Gol Scans On must scale mee almost never required always necessary roughness Removal restoration of paint always necessary Go and other surface protective only if coating thickness exceeds 2mm coatings C3 Ap
7. ontinuous operation not more an air gap B 9 B 10 Time of individual measurement of thickness a without account of preparatory operations scraping application removal of greasing restoration of protective coating orientation of the transducer in the point of testing Thickness measurement duration is the same b with account of preparatory operations scraping application removal of greasing restoration of protective coating Necessity of additional devices for orientation of the transducer strictly perpendicularly to tested surface in the point of measurements 10 100 times less than with thickness gauge with piesotransducer never required 10 100 longer than with thickness gauge UT 04 EMA always and obligatorily necessary B 10 1 Necessity of system of feeding of contact liquid with a stationary variant of thickness gauge in a technological stream never required always necessary Time spent on transducer orientation in test point never required always obligatory B 12 Test speed while in stream movement the same B 13 Availability of echogram on device display screen always a very rare service with thickness gauges with piesotransducer B 14 Presence in device memory always a very rare service of not thickness figure but rather pulsed echogram Informat
8. plication removal of never required always necessary contact liquid C 4 Contact liquid proper never required always necessary Expenses on US Can be reduced several times as defectoscopy must defectoscopy after 100 be carried out in such zones where defects on EMA C 5 thickness measurements thickness gauge display screen are registered or in if ever reduced but insignificantly places where loss of the emitted by thickness gauge pulses occurs Expenses on spare Zero at correct operation only casual non service life of piesotransducer is always finite and is transducers for their operations are possible only because of negligence of defined by life time of its working part which is replacement in case of round the personnel as abrasive wear of EMA transducer abraded during the work Depending on the intensity C 6 the clock operation does not occur of operation of the transducer and the degree of roughness of the tested surface service life can be from several weeks to several months Thus several pieces of spare transducers are spent in any case Table D D Time input for performance of basic and preparatory operations at thickness measurements with non contact thickness gauge UT 04 EMA Delta and traditional contact ultrasonic thickness gauge with piesotransducer Time input O EMA thickness Traditional contact No f ora PETHEN gauge UT 04 EMA thickness gauge with
9. r in measurement sub band from 2 0 to 20 mm mm 0 06 in measurement sub band from 20 up to 200 mm mm 0 001Hx 0 06 Minimum curvature radius of tested surface mm 10 Size of air gap or nonconducting coating not exceeding mm 2 0 Indicator is graphic LCD display with internal contrast backlighting Self contained battery power supply Volt 12 Time of continuous operation without recharging not less than hour 12 Range of operation temperatures C from 20 to 60 Weight of the device including power source not exceeding kg 2 5 Overall dimensions of electronic unit mm 190x80x205 sensor mm 80x38x38 A mobile handcart for EMA sensor can supplement the device It allows receiving thickness diagram by wheeling the sensor along the tested item with increase of stored echograms number up to four thousand UNIT OF EQUIPMENT Description Value Measurement unit with battery 1 EMA sensor 1 Handcart with EMA sensor 1 Thickness calibration specimen 2 Charging unit 1 PC cable 1 CD with special software 1 User manual 1 Equipment certificate 1 The device is used for thickness measuring of items made from conductive metals with one sided access It operates in field conditions and allows making measurements without contact liquid and surface conditioning through air gap or nonconducting surface It shows outgoing and echo impulses on the screen which allows to determine corrosion degree of inaccessible surfa
10. wear with EMA transducers does not occur regularly and always piesotransducers require periodic renovative repair or replacement 10

Delta

Contents

Download Pdf Manuals

Related Search

Related Contents