Discover what surface profile is; why the industrial and protective coatings industry measures it; and how you can take faster, more accurate, and repeatable surface profile measurements using the Elcometer 224 Digital Surface Profile Gauge. CONTENTS 0:04 - What is surface profile? 1:32 - Surface profile vs. roughness 2:01 - Why does the coatings industry measure surface profile? 2:58 - What surface profile is required? 4:31 - Surface Comparators 4:59 - Replica Tape 5:44 - The new Elcometer 224 Digital Surface Profile Gauge 7:06 - Why you need to take multiple readings 8:39 - The Elcometer 224 and ElcoMaster App PLEASE NOTE - If you have an Elcometer 224 gauge that was released before 1st March 2019, you can update the software of your gauge to include the new measurement modes feature by connecting the gauge to the latest version of ElcoMaster for PC via USB cable. In the industrial and protective coatings industry, steel surfaces are blasted not only to remove corrosion or old coatings, but to generate a surface profile prior to re-painting. The surface profile increases the surface area, and it is this increased surface area which provides a key for the coating to adhere or stick to. Surface Profile should not be confused with roughness. Surface profile is a measurement of the peak-to-valley height. Surface roughness, on the other hand, is the combined measurements of the surface profile and the frequency of the peaks across a linear length (also known as the peak count). The coatings industry measures surface profile to avoid corrosion. Corrosion is typically caused when three things come together – a ferrous material (in our case the steel substrate), oxygen (from the air) and moisture. If you can remove just one of the 3 elements, corrosion (or more precisely aerobic corrosion) simply cannot happen. Applying a coating to the steel provides a barrier between the steel and both the air and moisture, preventing corrosion. So if the coating is damaged, or simply rolls off the surface due to poor adhesion, then the steel will rust, corrode, and in time weaken the structure. The surface profile required is specified by the coating manufacturer or the coating specification agreed to by all parties, and is directly related to the specified dry film coating thickness being applied. Typically the surface profile specified is the peak-to-valley height in either microns or mils. The coating is also specified in either microns or mils, as a dry film thickness. The key here is that the required coating thickness is applied to both the valleys and the peaks, otherwise you get rust spots. If the profile is too high or too low, this can lead to premature coating failures, and ultimately corrosion. There are a number of ways to measure surface profile: - Surface Comparators: https://youtu.be/YlLfLZIodKU - Replica Tape: https://youtu.be/E5Nhhnxz6p4 - A needle depth gauge, such as the Elcometer 224. With the ability to measure profiles up to 500 microns (20 mils), on flat or curved surfaces, the Elcometer 224 Digital Surface Profile Gauge provides repeatable and reproducible measurements, accurate to ±5%; can store each reading into memory (150,000 readings in 2,500 batches) – and can instantly transfer them to your PC or mobile device using ElcoMaster; our free, easy-to-use software application, generating professional inspection reports, instantly. What’s more, the new Elcometer 224’s measurement modes, make sure that you can collect and record the data you need in accordance with your relevant test method, or standard. Connect the Elcometer 224 to your mobile device via Bluetooth, and either transfer the readings from memory, or transfer each reading into the ElcoMaster App, live as you take them. Once the inspection is complete, you can instantly generate and send the inspection report, anywhere in the world. For more information on the Elcometer 224 Digital Surface Profile Gauge, please contact Elcometer at sales@elcometer.com, or visit our website: https://www.elcometer.com/en/coating-inspection/surface-cleanliness-surface-profile/surface-profile/elcometer-224-digital-surface-profile-gauge.html ----- Click here to download the video script in English: https://www.elcometer.com/pub/media/PDF/Video_Scripts/Understanding_Surface_Profile_Elcometer_224.pdf ----- STANDARDS: Elcometer 125 AS 3894.5, ASTM D 4417-A, IMO MSC.215(82), IMO MSC.244(83), ISO 8503-1, ISO 8503-2, SSPC PA 17 Elcometer 127 AS 3894.5, ASTM D 4417-A, SSPC PA 17 Elcometer 129 AS 3894.5 Elcometer 122 ASTM D 4417-C, BS 7079-C5, ISO 8503-5, NACE RP0287, SSPC PA 17, US Navy NSI 009-32, US Navy PPI 63101-000 Elcometer 124 ASTM D 4417-C, ISO 8503-5, NACE RP0287, SSPC PA 17, US Navy NSI 009-32, US Navy PPI 63101-000 Elcometer 224 ASTM D 4417-B, SANS 5772, SSPC PA 17, US Navy NSI 009-32, US Navy PPI 63101-000

PLEASE NOTE: This video is part of "Understanding Surface Profile with the Elcometer 224 Digital Surface Profile Gauge". Watch the full video here: https://youtu.be/buhKj9y7GXU In the coatings industry, it is vital to measure surface profile to ensure it is within the predefined specification, otherwise a profile that is too high or too low could lead to costly premature coating failures and corrosion. So, how do you measure surface profile? CONTENTS 0:05 - Introduction 0:58 - Surface Comparators 1:27 - Replica Tape & Elcometer 124 Thickness Gauge 2:12 - The new Elcometer 224 Digital Surface Profile Gauge 3:33 - Why you need to take multiple surface profile readings 5:06 - The Elcometer 224 and ElcoMaster App PLEASE NOTE - If you have an Elcometer 224 gauge that was released before 1st March 2019, you can update the software of your gauge to include the new measurement modes feature by connecting the gauge to the latest version of ElcoMaster for PC via USB cable. In the industrial and protective coatings industry, metal surfaces are either chemically etched, mechanically abraded, or blasted; to among other things, generate a surface profile. The surface profile increases the surface area, which provides a key for the coating to adhere or stick to. If the surface profile is not within specification, and is either too large or too small, this can lead to costly premature coating failures and corrosion. So that’s why it is important to measure surface profile. There are a number of methods for measuring surface profile, and they all work in different ways. Surface Comparators are flat, metal plates, which contain a number of reference surface profiles. The comparator is placed on the surface, which is compared with the reference profiles through either sight or touch. The profile is determined and recorded. A widely used alternative is the Replica Tape method. A tape with a compressible foam pad is applied to the surface, and rubbed with a burnishing tool. By rubbing the tape into the surface, the foam is pushed down, creating an inverse or mirror image of the profile. The tape is then removed and measured using a thickness gauge, such as the Elcometer 124 gauge. The replica tape method provides a peak-to-valley height measurement of the profile. A faster, more accurate, and repeatable method for measuring surface profile is the new Elcometer 224 Digital Surface Profile Gauge. The Elcometer 224 is a needle depth gauge, which is very easy to use. Simply zero the gauge on glass, and, when the gauge is placed on the surface, a spring mounted needle measures the depth of the profile from the peaks of the profile at that particular point. With the ability to measure profiles up to 500 microns (20 mils), on flat or curved surfaces, the Elcometer 224 Digital Surface Profile Gauge provides repeatable and reproducible measurements accurate to ±5%. The Elcometer 224 can store each reading into memory (150,000 readings in 2,500 batches) – and can instantly transfer them to your PC or mobile device using ElcoMaster; our free, easy-to-use software application, generating professional inspection reports, instantly. Taking just one reading on a blasted surface will not be representative of the entire surface profile, as the needle could rest in a valley or on any part of the slope. That is why you need to take a number of readings over a small area to get a statistically valid measurement. That’s why most test methods or standards recommend you take multiple readings in one location; some say ten (ASTM 4417-B), others say five (SANS 5772); and again depending on the standard you should record either the maximum or average of these readings. The new Elcometer 224 Digital Surface Profile Gauge can store either the average or maximum peak to valley height reading into memory. Alternatively, if you want to store every value, simply select the gauge’s Immediate mode. For more information on the Elcometer 224 Digital Surface Profile Gauge, please contact Elcometer at sales@elcometer.com, or visit our website: https://www.elcometer.com/en/coating-inspection/surface-cleanliness-surface-profile/surface-profile/elcometer-224-digital-surface-profile-gauge.html ----- Click here to download the video script in English: https://www.elcometer.com/pub/media/PDF/Video_Scripts/Measuring_Surface_Profile_p2_Elcometer_224.pdf ----- STANDARDS: Elcometer 125 AS 3894.5, ASTM D 4417-A, IMO MSC.215(82), IMO MSC.244(83), ISO 8503-1, ISO 8503-2, SSPC PA 17 Elcometer 127 AS 3894.5, ASTM D 4417-A, SSPC PA 17 Elcometer 129 AS 3894.5 Elcometer 122 ASTM D 4417-C, BS 7079-C5, ISO 8503-5, NACE RP0287, SSPC PA 17, US Navy NSI 009-32, US Navy PPI 63101-000 Elcometer 124 ASTM D 4417-C, ISO 8503-5, NACE RP0287, SSPC PA 17, US Navy NSI 009-32, US Navy PPI 63101-000 Elcometer 224 ASTM D 4417-B, SANS 5772, SSPC PA 17, US Navy NSI 009-32, US Navy PPI 63101-000

PLEASE NOTE: This video is part of "Understanding Surface Profile with the Elcometer 224 Digital Surface Profile Gauge". Watch the full video here: https://youtu.be/buhKj9y7GXU In the coatings industry, what is surface profile, why is it important, and what surface profile is required to ensure the coating performs for its expected lifetime? This video answers all of these questions, and more... CONTENTS 0:04 - What is surface profile? 1:32 - Surface profile vs. roughness 2:01 - Why does the coatings industry measure surface profile? 2:58 - What surface profile is required? In the industrial and protective coatings industry, metal surfaces are blasted not only to remove corrosion or old coatings, but to generate a surface profile prior to re-painting. In some industries a surface profile is achieved through chemical etching or mechanical abrasion. But, regardless of the method, the surface profile increases the surface area of the metal - and it is this increased surface area which provides a key for the coating to adhere or stick to. Surface profile is a measurement of the peak-to-valley height, but why is it important for the coatings industry to measure it? To avoid corrosion. Corrosion is typically caused when three things come together – a ferrous material (in our case the steel substrate – although it is worth noting that non-ferrous materials can also corrode), oxygen (from the air) and moisture. If you can remove just one of the 3 elements, corrosion (or more precisely aerobic corrosion) simply cannot happen. Applying a coating to the steel provides a barrier between the steel and both the air and moisture, preventing corrosion. So if the coating is damaged, or simply rolls off the surface due to poor adhesion, then the steel will rust, corrode, and in time weaken the structure. Watch our other surface profile videos: - Surface Comparators: https://youtu.be/YlLfLZIodKU - Replica Tape & Elcometer 124: https://youtu.be/E5Nhhnxz6p4 - Elcometer 224 Digital Surface Profile Gauge: https://youtu.be/vMws9YLPt8Y For more information on the Elcometer range of surface profile gauges, surface comparators, and replica tape, please contact Elcometer at sales@elcometer.com, or visit our website: https://www.elcometer.com/en/coating-inspection/surface-cleanliness-surface-profile/surface-profile.html ----- Click here to download the video script in English: https://www.elcometer.com/pub/media/PDF/Video_Scripts/Understanding_Surface_Profile_p1.pdf ----- STANDARDS: (relating to surface profile measurement) AS 3894.5, ASTM D 4417-A, ASTM D 4417-B, ASTM D 4417-C, BS 7079-C5, IMO MSC.215(82), IMO MSC.244(83), ISO 8503-1, ISO 8503-2, ISO 8503-5, NACE RP0287, SANS 5772, SSPC PA 17, US Navy NSI 009-32, US Navy PPI 63101-000