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\r \f \n \t\r\n Pulsed Eddy Current Array (PECA™) Probe Selection and Footprint—Carbon Steel (Lyft 2.2)This reference document is designed to assist your selection of the right PECA probe for your application with Lyft software version 2.2. Knowing the nominal thickness of the component being inspected and the nominal insulation/coating thickness in place will help you. The remaining information is intended to help you understand and determine the footprint of your probe, scan resolution, and circumferential grid spacing. This is especially useful in quantifying the performance of the Lyft solution under di erent conditions.PECA Probe Application Range NSULAT/COATKNESSFTOFF 1020.250.500.751.502.503.003.505.00 KNESS 0.130.250.380.500.630.751.25 Note 1:PECA-HR-SM is a dedicated probe used for scab inspections.Note 2:Estimated scab height should be considered as lifto when validating the application range for the PECA-HR-SM probe.Note 3:Smallest con guration for PECA-6CH-MED probe: 102 mm (4 in) OD pipe, schedule 40, with 25 mm (1 in) insulation; total OD 152 mm (6 in).Calculating the PECA Probe Footprint NSULAT/COATKNESSFTOFF 1020.250.500.751.502.503.003.505.00 OOTPR PECA-HR-SM0.871.031.201.361.521.852.17PECA-6CH-MED1121.962.132.292.452.783.103.433.754.40FootprintUse the footprint of the probe to determine the DEFEC DEPTH 50% FTOFF 1.20.241.40.471.11.20.941.3Note 1:Requires a minimum resolution of half the footprint on the scan axis.Note 2:Impossible to detect through-hole defects (100% wall loss). DEFEC DEPTH 50% FTOFF 3.02.11.31.23.62.11074.23.02.42.13.32.42.11315.13.63.02.32.11425.63.22.33.01515.91074.23.02.43.51626.41143.73.21021703.93.33.0Note 1:Tests were performed over 200 di erent con gurations, using mixed lifto values, types of weather jackets, at and round-bottom holes.Note 2:Requires the use of double-index resolution for lifto values between 0 and 25 mm (1 in).Note 3:Requires a minimum resolution of half the footprint on the scan axis.Note 4:Impossible to detect through-hole defects (100% wall loss).www.eddy .comSXSC2016KPECA-HR-SMPECA-6CH-MEDPECA-HR-SM(Dedicated Solution for Scab)PECA-6CH-MED \r\f
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\n\t\b \r\f \n\t\b Second-Generation PEC Probes (G2) Single-Element PEC Probe Selection and Footprint—Carbon Steel (Lyft 2.2)This reference document is designed to assist you in selecting the right PEC probes for your application with Lyft software version 2.2. Knowing the nominal thickness of the component to be inspected and the nominal insulation/coating thickness in place, the selection tables below suggest the adequate probes. The remaining information is intended to help you understand and determine the footprint of selected probes. This is especially useful in quantifying the performance of the Lyft solution in a variety of conditions.Selecting the Right PEC Probe NSULAT/COATKNESSFTOFF 1021521782033050.250.500.751.502.503.003.505.007.00 KNESS 0.130.250.38PEC-025-G20.500.630.75PEC-089-G21.25PEC-152-G21.502.50Custom developmentInquire for details3.00102We recommend using the PEC-GS-089-G2 in applications on galvanized steel (GS) weather jackets. If you use other standard probes over GS weather jackets, add 40 mm (1.5 in) lifto for every 0.5 mm (0.020 in) of GS.Selecting the Right Specialized PEC Probe NSULAT/COATKNESSFTOFF 1021521782033050.250.500.751.502.503.003.505.007.00 KNESS 0.130.250.38PEC-025-G2PEC-UW-025-G20.500.63PEC-GS-089-G20.751.251.50PEC-SZ-089-G2PEC-UW-089-G2PEC-UW-152-G22.50Custom developmentInquire for details3.00102FootprintThe footprint (FP) of a probe is used to determine the optimal grid resolution for proper detection. FP is defined as the full width at half maximum (FWHM) of the response detected by the probe. Doing so ensures a 50% signal overlap between each point on the grid map.Calculating the PEC Probe FootprintUse the following formula to determine your probe’s footprint (FP) and determine the axial grid resolutionFP 0.65 × LO + FPWhere is the lifto (insulation, jacket, coating thickness) and FP is the footprint at a lifto of zeroFor the probe, is:PEC-025-G2/UW = 35 mm (1.38 in)PEC-089-G2/SZ/UW = 62 mm (2.44 in)PEC-152-G2/UW = 100 mm (3.94 in) NSULAT/COATKNESSFTOFF 1021521782033050.250.500.751.502.503.003.505.007.00 OOTPR PEC-025-G2PEC-UW-025-G21.381.701.872.032.363.003.35PEC-089-G2PEC-SZ-89-G2PEC-UW-089-G21031121611781942.442.933.093.423.744.074.394.725.045.696.347.007.64PEC-GS-089-G21031121611781942.933.093.423.744.074.394.725.045.696.347.007.64PEC-152-G2PEC-UW-152-G21121171411502322653.944.104.264.415.245.565.896.217.197.848.499.1410.4311.73We recommend using the PEC-GS-089-G2 in applications on galvanized steel (GS) weather jackets. If you use other standard probes over GS weather jackets, add 40 mm (1.5 in) lifto for every 0.5 mm (0.020 in) of GS. DEFEC DEPTH 50% OOTPR 1.41.12.41.41.21.
3 12.41.41.31.22.41.43.13.92.23.51104.33.1
12.41.41.31.22.41.43.13.92.23.51104.33.12.23.92.42.21104.35.33.83.12.42.21475.84.13.32.45.16.31134.43.63.15.53.93.01505.97.25.14.23.63.23.06.31967.71395.51133.93.53.21708.21475.84.13.77.11566.15.01104.33.93.57.59.21655.31164.13.77.92459.61731415.61104.33.9Note 1:Impossible to detect through-hole defects (100% wall loss).Note 2:Requires a minimum resolution of half the footprint of the selected probe.Note 3:Above defect sizes were determined using at-bottom holes.www.eddy .comSXSC2016KMinimum Detectable Defect Diameters at Speci c Depths \r \f \n \t\r\n Cast Iron PEC Probe Selection and Footprint (Lyft 2.2)This reference document is speci c to Cast Iron inspections with PEC technology. It is designed to assist your selection of the right PEC probes for your application with Lyft software version 2.2. The selection tables below suggest the adequate probes based on the known nominal thickness of the component being inspected and the nominal insulation/coating thickness in place.The remaining information is intended to help you understand and determine the footprint of selected probes. This is especially useful in quantifying the performance of the Lyft solution in a variety of conditions.Selecting the Right PEC Single-Element Probe NSULAT/COATKNESSFTOFF 0.250.500.751.502.50 KNESS 0.130.250.380.500.63PEC-025-G20.751.25PEC-089-G21.50Selecting the Right Specialized PEC Probe NSULAT/COATKNESSFTOFF 0.250.500.751.502.50 KNESS 0.130.250.380.500.63PEC-UW-025-G20.75PEC-UW-089-G2PEC-SZ-089-G21.251.50PECA Probe Application Range NSULAT/COATKNESSFTOFF 0.250.500.751.502.50 KNESS 0.130.250.380.500.630.75PECA-6CH-MED1.251.50Calculating the PEC Probe FootprintFootprint sizes for cast iron are the same as the ones for carbon steel. Use the following formula to determine your probe’s footprint (FP).FP 0.65 × LO + FPWhere is the lifto (insulation, jacket, coating thickness) and FP is the footprint at a lifto of zeroFor each probe, is:PECA-6CH-MED = 46 mm (1.80 in)PEC-025-G2/UW = 35 mm (1.38 in)PEC-089-G2/SZ/UW = 62 mm (2.44 in) NSULAT/COATKNESSFTOFF 0.250.500.751.50 OOTPR PEC-025-G2PEC-UW-025-G21.381.701.872.032.36PEC-089-G2PEC-UW-089-G22.442.933.093.423.74PECA-6CH-MED1.962.132.282.452.783.10FootprintUse the footprint of the probe to determine the optimal grid resolution for proper detection. The FP is defined as the full width at half maximum (FWHM) of the response detected by the probe. This ensures a 50% signal overlap between each point on the grid map.Characteristic Decay Time (CDT)Both grey and ductile irons are supported when selectin
4 g cast iron type during setup with the L
g cast iron type during setup with the Lyft software. These materials are typically more resistive than carbon steel, leading to a much faster PEC response and lower Characteristic Decay Time (CDT). Typical CDT of grey and ductile cast irons are compared to carbon steel in the graph here:You may need to adjust the CDT manually before starting the SmartPULSE or PEC Autoset procedures if the cast iron deviates signi cantly from typical behavior.www.eddy .comSXSC2016K \r\f \n\t\b \r\f \n\t\b First-Generation PEC Probes (G1) Single-Element PEC Probe Selection and Footprint—Carbon Steel (Lyft 2.2)This reference document is designed to assist your selection of the PEC probe that is best suited for your application with Lyft software version 2.2. The selection table below suggest the adequate probes based on the known nominal thickness of the component being inspected and the nominal insulation/coating thickness in place.The remaining information helps you understand and determine the footprint of the selected probe, the averaging area, and the edge e ect. This is especially useful in quantifying the performance of the Lyft solution in a variety of conditions.Selecting the Right PEC ProbeRefer to the chart when choosing a probe. NSULAT/COATKNESSFTOFF 1021521782030.250.500.751.502.503.003.505.007.00 KNESS 0.130.250.38PEC-0250.500.630.75PEC-089PEC-SZ-0891.25PEC-1521.502.50FootprintCalculating the PEC Probe FootprintUse the following formula to determine your probe’s footprint (FP).FP 0.65 × LO + FPWhere is the lifto (insulation, jacket, coating thickness) and FP is the footprint at a lifto of zeroFor each probe, is:PEC-025 = 35 mm (1.38 in)PEC-089/PEC-SZ-089 = 62 mm (2.44 in)PEC-152 = 100 mm (3.94 in) NSULAT/COATKNESSFTOFF 1021521782030.250.500.751.502.503.003.505.007.00 OOTPR PEC-0251.381.701.872.03PEC-089PEC-SZ-891031121612.442.933.093.423.744.074.394.725.045.696.34PEC-1521121171411502323.944.104.264.415.245.565.896.217.197.848.499.14Averaging AreaThis is the surface viewed by the probe on the component. The wall thickness determined by Lyft is the average wall thickness within the averaging area. As a result, corrosion aws smaller than the averaging area are underestimated. The averaging area diameter is 1.8 times the probe footprint (AvgA = 1.8 × FPEdge E ectThe edge e ect impacts PEC measurements when a probe nears geometry variations such as nozzles, anges, or the end of a structure. Measurements begin to vary from a distance of one FP from the center of a probe’s coils.www.eddy .comSXSC20