Eddy current tube calibration standards. html>ud

) OD differential and absolute Reference standards of eddy current inspection are also discussed and are for the calibration of the instruments in detecting defects. P/N NRK-3S: 4340 Steel all three layers. Please browse our products to find the best one for you. Calibration reference standards shall conform to the following: (a) Calibration reference standards shall be manufactured from tube(s) of the same material specification and nominal size as that to be examined in the vessel. Our experience in dealing with all simulated flaws from EDMs Designed with operator ease of use in mind, the MIZ-200 automatically recognizes the probe type connected to it and configures its internal multiplexor accordingly. 0 μΩ–cm. O. 33B-1-1 Figure 4-40. Below are a few examples. English (English) Have a question about a product or solution featured in this brochure? Contact a Sales Rep. In the case of NDT equipment, calibrations are performed using precision test blocks that simulate conditions and serve as reference standards. 3 Eddy current testing systems are generally not sensitive to discontinuities adjacent to the ends of the tube (end effect). Calibration Standards For Tube Inspections Our experience in dealing with all simulated flaws from EDMs notches to thinning and expansions puts us in a unique position to recommend procedures and implement standards that increase your probability of detection during inspection of plants worldwide. VM89_ Each hole contains a 0. 0. It is made from 2024-T3 aluminum sheet and measures . 1 Eddy Current Testing Applications and Capabilities 4. If you have any questions If you have a drawing, or even a simple hand sketch, please send that along as well. 3 was fabricated. Eddy Current Testing Standard Calibration Tube. Whether you need tube supports, uncommon flaws or specialized packaging for the standards, NDE can support. Accounts Receivable, paying an invoice. Figures 4-47 through 4-49 Eddy Current Standard, NSN 6635-01-092-5129, P/N 7947479-10. Common eddy current reference standards include: Conductivity standards. This induces a flow of eddy currents around the test material or in the case of a sector coil, in the area under the coil. Each VM89_ reference standard is 5 1⁄2” long x 2” wide x 1/4” thick. Note 1 to entry: For example, eddy current testing (3. TAI Services will supply all materials, labor and test equipment needed for the inspection. 8 mm to 24 mm by 0. (0. Notch configuration and fastener type can all be specified. 017 in. F. – ECT is used only for thin tubes (<1. However, the performance of a PEC system is dependent on the electrical and magnetic properties of the pipe material, which are generally unknown. For thicker walls, it is better to use RFT or MFL. Calibration. -. Oct 3, 2018 · RE: standard tube calibration Eddy Current/RFECT/MFL EdStainless (Materials) 4 Oct 18 02:06 You could reach out to PH Tool and see if they can make one for you. 875 in. 2 Eddy Current Probe Selection 3. 05 mm in O. We specialize in custom eddy current tubes, and have years of experience in machining a huge range of defects. PH Tool Reference Standards has supplied the Nondestructive Testing (NDT) industry with high-quality Reference Standards and Test Blocks since its founding by Phil Herman Sr. 3-Notch Eddy Current Standard; Aircraft Manufacturer Standards. Then, in section 3, we derive a mathematical model for the recorded signal on the This document outlines standards and procedures for eddy current examination. The technique is applied to detect corrosion, pitting, cracks, erosion and other changes to both the tube’s interior and exterior surfaces. 3 Eddy Current Array Probes 3. 1 Eddy current testing is a nondestructive method of locating discontinuities in a product. Supports the new Surf-X array tape probes for a wide range of applications ; Features automatic loading of the acquisition setup by taking advantage of the probe’s one-wire technology and faster data calibration Who We Are. 030” corner EDM notch on the top surface. To generate and capture PEC, first, a magnetic All of our EDM Notch Reference Standards are 100% inspected, traceable to the National Institute of Standards and Technology (NIST), and include a comprehensive certification report. Like most test and measurement equipment, eddy current testers need to be periodically calibrated to maintain accuracy. 945 in. , pencil probes using (ECT) ). Hole (with and without fastener) discontinuity standards. We specialize in custom eddy current tubes, Eddy Current Tube Standards. Contact: (913) 685-0675 Abstract. 06 thick x 4. Fastener holes in aluminum parts shall be inspected in accordance with SAE ARP4402 and in other alloys in accordance with SAE AS4787 except as modified by this specification. 203". 6. Eddy Current Standards. Electrical Conductivity and Resistivity for Titanium and Titanium Alloys. PH Tool is the suggested manufacturer of this item. VM89_-1 Each hole contains a 0. Reference Standards. MF: Medium frequency optimized for stainless steel. 7 Calibration Standards. Aerofab Reference Standards are available in almost every alloy with hole diameters to suit your application. 2 The procedure is specifically applicable to eddy current testing methods using an encircling-coil assembly. There is a figure in old standard of ASME showing 100% notch signal at 40 degree. Mildly ferromagnetic material Duplex steel, SS439, Secure, Monel. in. 4 mm), inclusive, and wall thicknesses from 0. Standard is made in two (2) 11” long pieces (22” overall) and is joined with a plastic coupling on the OD. X. Innovative eddy current probe solutions. When it comes to understanding your needs, we’re your trusted advisor. 4 Probes Design 3. 2 mm. Short, intermittent anomalies or flaws cause a Feb 14, 2014 · This paper applies to individuals charged with maintaining the reliability of shell and tube heat exchangers. Inspection of tubular products shall be performed Re: Eddy Current Equipment Calibration Standard In Reply to Kamran at 13:22 Oct-06-2011. 1. The eddy current inspection method is a highly capable, reliable inspection method. Miniature Angle Beam Block Distance, beam index, refracted angle and sensitivity calibration. What defects are needed and what size? (most depths are given in % of tube wall) Is there a specification the standard needs to comply with? (ASME, etc. However, this could lead to suboptimal results. 004 High-quality eddy current testing solutions for complete inspections. Therefore, the use of a calibration block from a different steel will give inaccurate results. 33B-1-1. (40) Corner notches, (20) Bore notches, (4) Surface notches (1 Description. In latest equipments we keep fill factor signal at horizontal. 2. The primary standards and test pieces Nov 30, 2020 · Method 1: Eddy Current Testing Eddy current testing (ECT) is a noncontact method used to detect and size metal discontinuities, such as corrosion, erosion, wear, pitting, baffle cuts, wall loss, and cracks in nonferromagnetic tubing made from austenitic stainless steel (such as SS304/SS316), brass, copper-nickel, titanium, copper-fin, and Monel. Nivash at 05:04 Oct-31-2016 (Opening). Eddy Current Testing Quiz. 008 in. Other standards with EDM notches, ID pits, wearscars, wall loss, ID FBHs, controlled dents, and milled flats available. 4. However, this calibration standard Nov 1, 1999 · Abstract. Our capabilities include NDE, mechanical inspection, 3D CAD, electrical discharge machining (EDM Eddy Current Calibration Tube Standards Calibration Standards for tube inspections Our experience in dealing with all simulated flaws from EDMs notches to thinning and expansions puts us in a unique position to recommend procedures and implement standards that increase your probability of detection during inspection of plants worldwide. edu. 2. 432 Eddy Current Reference Standards allow you calibrate your instrument for proper eddy current applications. P/N NRK-3T: 6AL-4V TI all three layers. We also offer eddy current shims. An eddy current array, in its simplest form, is a series of single elements arranged in a row, allowing users to cover a larger area in a single pass than conventional, single-coil probes (i. For additional information on any of our products and services. A. R8: 8 reflection coils. to 0. It contains two through holes at 0. 27 mm (0. Also, we can develop customized solutions that meet the specific needs of our customers. Such calculations could be very helpful in understanding and interpreting EC probe response to complex tube/defect geometries associated with the Dec 27, 2016 · 1. Common reference standards include flat plate, tube and hole discontinuity standards, and conductivity standards. Notch depths are engraved on one edge; serial number and alloy on the other. 040 Notches) This common standard contains (3) surface notches at depths of 0. It provides a relative volumetric measurement converted into an averaged thickness measurement based on the calibration area. Whether you need EDM notches, Flat-bottom holes, Micro-holes, or Test Blocks, PH Tool can handle your order. We have built them in lengths as small as Jun 26, 2024 · Significance and Use 5. Zetec is the industry leader for cost-effective eddy current testing (ECT) in complex applications. Electrical Conductivity and Resistivity for Misc. 0 long. Air Force General Purpose Eddy Current Standard. 020” deep x 0. Jun 30, 2020 · The pulsed eddy current (PEC) method was devised as a means of inspection through the surface layers. probe (s) for a given inspection. We deliver high quality products at fair prices. From TWHs and FBHs, OD and ID grooves, milled flats, and OD and ID thinning bands, to ID FBHs, ID contoured flats, 120°/180° wearscars, tapered 15. 008, 0. Reference Standards can be fabricated from custom supplied pipe, tube, bar, plate or actual parts. Even the equipment is working good condition since two years. 3 Inspection With Eddy Current. 020, . Electromagnetic Testing (ET) uses the Eddy current inspection of flat surfaces and threaded fasteners shall be performed in accordance with this specification. iastate. Tube discontinuity standards. We have the most extensive experience, and we develop the highest quality ECT inspection products. appropriate term. 3 mm (0. 3. In this study, each source of data quality for eddy current array probes has been associated with a quantifiable parameter. Whether the tubing is in power generation, air conditioning, petrochemical, food processing, or pharmaceutical manufacturing, the condition of tubes plays a vital role in process efficiency and safety. We manufacture all regular calibration blocks to international standards and any custom designed specialist pieces all to tolerances of +/- 0. TXE: Eddy current array tube probe. These procedures are applicable for tubes with outside diameters to 31/8 in. 4 Discontinuities such as scratches or seams that are continuous and uniform for the full length of the tube may not always be detected. Email *. Flat plate metal thinning standards (step or tapered wedges). We can make reference standards for ultrasonic testing (UT), phased array ultrasonic testing (PAUT), time-of-flight diffraction (TOFD), surface eddy current and array. Calibration of eddy current measurement systems is an important factor for attaining the accuracy and precision of measurement that quantitative nondestructive evaluation requires. Standards and Technical Documents - Non-destructive testing; Eddy current testing of pipes and tubes; Reference method for the determination and calibration of the properties of an eddy current testing system using concentric test coils -- DIN 54141-2 5. 0” long bands @ 10%, 20%, 30%, and 40% wall loss at 360° circumferential extent. D. The skill and experience of the inspector are, of course, critical for accurate inspection Contact Us. Jan 6, 2024 · Eddy Current Testing (ECT) is governed by various standards and codes that provide guidelines and requirements for conducting inspections, equipment calibration, and data interpretation. Notch width typically 0. It includes guidelines for the preparation of application documents which describe the specific requirements for the application of the eddy current Multi-Function Test Block Multi-Function Test Block is designed for demonstrating the capabilities of the Eddy Current method; sorting, cracks detection, and corrosion-thinning. Using this data, best results will be achieved by optimizing the frequency and choosing a suitable instrument. The quality check requires a specific reference tube standard. NDE FLAW TECH offers NDT Calibration Blocks and NDT Weld flawed specimens. For the purposes of this chapter, Eddy Current, Eddy Current Inspection, and/ET will be used. T. This document defines the general principles to be applied to non-destructive eddy current examination of products and materials in order to ensure defined and repeatable performance. Overall Dimensions: 1. Manufactured in accordance with U. 1 This practice covers the procedures that shall be followed in eddy-current examination of copper and copper-alloy tubes for detecting discontinuities of a severity likely to cause failure of the tube. Tube metal thinning standards. The document establishes qualifications for personnel, describes equipment requirements, and calibration procedures to ensure accurate eddy Reference Standards can be fabricated from custom supplied pipe, tube, bar, plate, or actual parts. Standard 13. IRIS can sometimes be used to confirm the sizing of defects. 1 Types of Eddy Current Probes 3. Dear Mr. Select Language for Download. 040. 0". 5 Probes Parameters 3. in 1973. A measurement method and acceptance criteria were developed for each of these parameters. That’s why ECA probes use multiplexing. It is common, if not mandatory, for tube manufacturers to use some form of non-destructive testing (NDT) during tube production. More Details >> 12 Hole Eddy Current Bolt Hole Standard Standard UT Blocks Individual or sets of ultrasonic and eddy current calibration blocks to suit all site and laboratory inspection requirements. org site is temporarily still up at https://legacy-nde. Materials and Alloys. 2 The procedure is specifically applicable to eddy-current testing methods using an encircling-coil assembly. It provides tabular and interactive digital output. At PH Tool, our dimensions are carefully obtained via replication and observation using video measurement systems, and contain reliable/repeatable dimensions which ISO 17643:2015 defines eddy current testing techniques for detection of surface breaking and near surface planar discontinuities, mainly in ferritic materials (weld material, heat-affected zones, base material). The types of artificial disconti- We would like to show you a description here but the site won’t allow us. NOTE: The old nde-ed. 004 to 0. Keeping through hole signal at 40 degree is not mentioned in any standard. Pulsed Eddy Current (PEC) is an electromagnetic inspection technique used to detect wall loss on ferromagnetic structures such as carbon steel and cast iron. electromagnetic testing. , 1. 005, with other widths possible. 1/4” OD up to 24” OD, as well as some metric sizes. Welding / Steel Testing Calibration Standards. With the differential probe, no signal will be seen on the eddy current instrument ASME Sec. Standard Test Blocks are available in steel, stainless steel and TCR Arabia has indigenously developed an automated robotic crawler to aid ultrasonic inspection of reformer tubes. 5" x 5. 11) and microwave methods are classed as electromagnetic testing. It addresses the scope, general requirements, equipment, calibration needs, examination techniques, evaluation, documentation, and provides appendices with more specific methods. e. Dear Sir, In accordance with ASME Section -V, Article -8, Appendix-II, Paragraph-II-860. mm. Sample calculations were performed with a three-dimensional (3D) finite-element model to describe the response of an eddy current (EC) probe to defects in steam generator (SG) tubing. BS 3889 (part 213): 1966 (1987) Eddy current testing of nonferrous tubes. 0 wide x 7. EDDY CURRENT TESTING STANDARDS (Surface) The product is passed through or adjacent to an electrical test coil, which has been excited by an alternating current. 1. Kamran Could you please guide me any ECT equipment what is procedure for calibration standard and after long will required for calibration. 1 To perform eddy current inspections of installed heat exchanger tubing for the purpose of detecting tube degradation and/or abnormalities. Cable Length. Introduction. 040" thick x 2. Our experience in dealing with all simulated flaws from EDMs notches to thinning and expansions puts us in a unique position to recommend procedures and implement standards that increase your probability of detection during inspection of plants worldwide. Calibration Blocks and Reference Standards. Whether you need tube supports, uncommon flaws or specialized packaging for the standards, AVN can support. 16. MATERIALS: P/N NRK-3A: Aluminum 7075-T651 - top and middle layers and 7075-T73 bottom layer. We offer a wide selection of bobbin probes for quick tubing inspections: X-Probe and CXB array probes to quickly find and characterize all Air Force Eddy Current Standard. We start in section 2 by introducing the Eddy Current array probe, the calibration tube and the off-centering noise. Electrical Conductivity and Resistivity for Nickel and Nickel Alloys. engineering. Contains four (4) 2. From TWHs and FBHs, OD and ID grooves, milled flats, and OD and ID thinning bands, to ID FBHs, ID contoured flats, 120°/180° wearscars, tapered Aug 26, 2018 · The objective of this work was to carry out standard measurements in a non-ferromagnetic tube using the Eddy Current Technique. If you have a drawing, or even a simple hand sketch, please send that along as well. These persons typically specify and/or retain the services of others to examine heat exchangers with nondestructive test methods, such as eddy current and are responsible for submitting run-repair-replace recommendations to management. 008, . Signals can be produced by discontinuities located either on the external or internal surface of the tube or by discontinuities totally cont . We specialize in custom eddy current tubes, Download scientific diagram | Showing ASME Calibration Tube with [4] Support Plate . 2 How to Use 3-Notch Eddy Current Standard (. This paper is intended to provide information to help the user in selecting the right E. V Article 8 Eddy Current Calibration Tube Standards. 20 m (65 ft) Get Quote. The probes should foster wider coverage per coil density, while the Feb 15, 2011 · Note 1-For convenience, the term tube or tubular product will hereafter be used to refer to both pipe and tubing. How it works. Re: Eddy current calibration In Reply to S. Replace the "X" in the part number with the appropriate number listed below to signify block material: 1 = 1018 Steel, 2 = 4340 Steel, 4 = 7075-T6 Aluminum, 5 = 304 Stainless Steel, 8 = 6-4 Titanium. Tube Support Simulation Rings also offered. Eddy Current Calibration U Bend Tube. They can be designed to incorporate any testing method like eddy current (ECT), RFT, IRIS, ECA, MFL, NFA, NFT, PSEC, ASME, etc. This standard is called out in the recent Alert Service Bulletin (ASB) 407-01-48. from publication: 2. Basis of Eddy current testing of tubes is an effective way of assessing the condition and lifespan of tubes, particularly in the power generation, petrochemical, chemical, fertilizer and air conditioning industries. 6 mm) with saturation probes. 05 in. 0 Typical Applications 4. 1mm. A calibration curve was created utilizing the smallest four circular features in the standard, having diameters of 0. Flat plate discontinuity standards. by 0. MIZ-200 works in conjunction with Zetec’s Velocity software providing a powerful, integrated solution customized for the specific needs of the Balance of Plant Power Generation Feb 8, 2016 · In this instructional video, you'll learn the fastest way to calibrate the NORTEC® 600 eddy current flaw detector for conductivity and coating thickness insp TB1065-X. Eddy current testing can also be specified for use with non-ferritic materials, for example in an application standard. Since 1968, Zetec has manufactured over 10,000 different probe designs to meet the constantly changing needs of the nondestructive testing (NDT) market. 156 to 0. Quiz. Nov 1, 1999 · These test cases pertain to simulation of the probe response to axial notches, 100 and 75% through-wall, on 22. ) and conductivity of ρ=100. Calibration standards are used to scale the eddy current signal so a signal voltage can be related to a flaw size. 1-meter distance. (79. TUBE INSPECTION BY ECT, RFT, NFT, MFL, IRIS, NFA. 543 in. On-line eddy current examining would not be subject to end effect. The calibration standard for the magnetic saturation EC illus-trated in Fig. More Details >> In terms of eddy current testing of heat exchanger tubes, one of the most important best practices to follow is to procure high-quality instrumentation, automated analysis software and multipurpose probes from an experienced NDT company that invests in innovative technologies. 15. Eddy current testing of tubes is an effective way of assessing the condition and lifespan of tubes, particularly in the power generation, petrochemical, chemical, fertilizer and air conditioning industries. It is a high-speed inspection method and one of The eddy current test method and the related remote field testing method provide high-speed inspection techniques for these applications. Navy Eddy Current Reference Standard Kit. Withdrawn: now known as BS EN 2360 (1995). 6 Custom Probes 3. Available in various alloys and sizes. ) outer diameter (OD) Inconel 600 tubing with a nominal wall thickness of 1. When used by a trained technician, it can be used to detect surface and some subsurface cracks, determine material Our conductivity probes use a system for measuring and certifying electrical conductivity of metals that operates using the four-point DC resistance technique for primary standards. Eddy Current Tube Analysis Inspection Training Eddy Current Tube Analysis Inspection Training Program Level I The training session for Level I requires 3 days classroom time covering — GENERAL — SPECIFIC and PRACTICAL. 094, and 0. In ECT a probe is excited with sinusoidal alternating current to induce eddy current in an electrically conducting material such as stainless steel, aluminium etc. Popular eddy current standard used to represent general uniform wastage (ID wall loss). The subject is divided into three sections -. This page describes the importance of using reference Eddy Current Calibration Tube Standard Block Calibration Standards for tube inspections Our experience in dealing with all simulated flaws from EDMs notches to thinning and expansions puts us in a unique position to recommend procedures and implement standards that increase your probability of detection during inspection of plants worldwide. It provides a powerful platform for eddy current data acquisition, analysis, and reporting in one simple, easy-to-use application. Eddy Current Tube Standards. From TWHs and FBHs, OD and ID grooves, milled flats, and OD and ID thinning bands, to ID FBHs, ID contoured flats, 120°/180° wearscars, tapered Off-centering noise origin can be the ageing of the plastic “tulips” used to maintain the probe in the middle of the steam generator tubes. Bell Helicopter EC-10-20/20A ET Standard; Boeing Reference Standard 185, 4340 Steel; Various Aircraft Eddy Current Standards; Custom Eddy Current Standards; DAC GSET Reference Standard; Eddy Current Tube Standards; MIL-STD-271F Reference Block; Navy Eddy ECT Calibration Tube. The common standard used to perform Eddy Current inspections on Aluminum components within the Air Force unless otherwise specified by the cognizant weapon system engineering authority. 12 holes with diameters of: 3/16”, 7/32”, 1/4”, 9/32”, 5/16”, 11/32”, 3/8”, 7/16”, 1/2”, 9/16”, 5/8” & 3/4”. The 1st point on every tube is referred at the bottom of the tube, climbing up to 14 meters height and provides tube data at every 0. 3 Fabrication of calibration standard The calibration standard was machined using a type-439 stainless steel tube (19. 5. A large list of tubing as per ASME standards are available. Level II The Level II training session requires 2 days classroom time covering the same as above. Different types of test blocks simulate different conditions. Use the form for any questions concerning: Equipment, Standards, Probes, Mock-Up Exchangers, Cases, Software, and or Machining. 020, and 0. 172" diameter, and two at . S. EC-10-20. The probes modeled are conventional 18. This standard contains drilled FBHs, through-wall holes, and OD/ID grooves. (Must be certified Level I […] 3 Expert Tips for the Eddy Current Testing of Tubes. 0 Probes 3. Flaw signals produced by surface-breaking ET Probes. 063, 0. ) If you have a drawing, or even a simple hand sketch, please send that along as well. A technique that is often used involves feeding a differential bobbin probe into the individual tube of the heat exchanger. P/N NRK-3AST: Consists of all three of the above Eddy Current: ECT Extended ASME Calibration Tube. This allows for a greater level of assurance in the quality and reliability of the welds that quite literally hold the world together. you may call us at: +1 (704) 394-8639. The experimental setup was the same as in the previous work [1] with Mock-up exchangers, also called tube mockups, tube bundle, exchanger test bundle, eddy current test bundles or tube testing bundles are used for training and testing purposes. 031, 0. Contact Us to Learn More. (20) Fastener Holes from 0. Bell Helicopter Eddy Current Standard No. 125 inches. Reference Standards and Test Blocks are used in ultrasonic, eddy current, magnetic particle, liquid penetrant and radiographic testing. The quantity of interest in most forms of eddy current inspection is Z, the change in probe impedance induced by a flaw. 72 in. U. 25 mm thick. 225-mm (0. 750 diameter. ECUTEC stocks raw material, as well as stock ready-made standards of the most popular varieties. (as Following) Requirements. 12:57 Oct-31-2016. EDDY CURRENT TESTING (ECT): Eddy Current Testing (ECT) works on the principle of electromagnetic induction. Current inventory comprises of tube/pipe sizes from 0. Let us know what you're looking for by filling out the form below. C. Two different methods are typically used: Eddy Current Testing (ECT) and Ultrasonic Testing (UT) have their own advantages and limitations, depending on specific criteria such as flaw type, flaw size, or inspection speed. Here are some commonly referenced standards and codes for Eddy Current Testing: An advanced ECT technique for weld inspection, eddy current array (ECA) for weld inspection makes it possible to detect small cracks, inclusions, and other flaws that are unlikely to be detected in other ways. These standards are maintained by Evident at all times and are recertified at set intervals to comply with NIST traceability. 100% of the tubes in the heat exchanger or chiller will be inspected unless otherwise specified in the purchase 3. Datasheet. BS 5411 (part 3):1984 Eddy current methods for measurement of coating thickness of nonconductive coatings on nonmagnetic base material. 5 Advantages and Disadvantages of Eddy Current Testing. class of non-destructive test methods that uses electromagnetic energy having frequencies lower than those of infrared light. We manufacture IIW type I & type II blocks, ISO 19675 “fishtail” blocks BS 3889 (part 2A): 1986 (1991) Automatic eddy current testing of wrought steel tubes. Standard 0. F197. Our reference standards come in the following variations: surface crack & sliding probe, conductivity, multiple hole and thickness. 5D Finite Element Simulation – Eddy Current Heat Exchanger Tube Inspection using FEMM 3. This includes ASME for non-ferrous materials, RFT for ferrous materials, and ECUTEC standards for chiller tube materials. 07 mm in thickness) same as the moisture separator reheater tube to be examined. A (3) plate assembly containing (20) fastener holes with a total of (66) EDM notches in various locations. Eddy Current Calibration Tube Standard Block Calibration Standards for tube inspections Our experience in dealing with all simulated flaws from EDMs notches to thinning and expansions puts us in a unique position to recommend procedures and implement standards that increase your probability of detection during inspection of plants worldwide. However, eddy current techniques that employ either fixed or rotating probe-coil assemblies may be used to either enhance discontinuity sensitivity on the large diameter tubular products or to maximize the response received from a 2. 030” x 0. Description. Select from a variety of eddy current probes and calibration standards from NDT Supply. sj ud pl am ly qx bs gp fe mx