The proper and effective preparation of a surface prior to coating is essential. Making sure that the correct roughness – or profile – has been generated is essential.
If the profile is too low, the adhesion of the coating to the surface will be reduced. Too high and there is the danger that the profile peaks will remain uncoated – allowing rust spots to occur.
Please click on the appropriate image or on the heading for more information about each instrument.
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This is an easy to use gauge that measures the peak-to-valley height of a blast cleaned surface. The average of a series of measurements provides an indication of the surface roughness and allows the surfaces to be compared as blasting proceeds. Conforms to ASTM, SABS
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The Elcometer 224 Digital Surface Profile Gauge provides the very latest in surface profile technology. Accurate and user friendly, this surface profile gauge is available with ( Elcometer 224 Model T with Bluetooth® ) or without memory ( Elcometer 224 Model S ) and statistics. Memory versions can store up to 50,000 readings in 999 batches. Range 0 to 500 microns. Accuracy +/-5%. Conforms to ASTM, SABS
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The Elcometer 122 testex tape allows the user to measure the peak-to-valley height of the profile and record it. Testex tape consists of foam with a non-compressible backing. The foam side is rubbed into the surface providing a permanent mould of the profile. The Elcometer 124 Thickness Gauge is then used to measure the peak-to-valley height of the profile formed. Conforms to ISO, DIS, ASTM
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The Elcometer 124 Dial Thickness Gauge is used to measure the peak-to-valley height of a surface profile formed in the Elcometer 122 Testex Tape. Conforms to ISO, BS, ASTM, NACE
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Whereas comparators allow the estimation of surface roughness by both touch and sight, the Elcometer 101 estimates the roughness of iron and steel surfaces. Its scale indicates the suitability of the surface for paints, metal coatings and hard metal coatings.
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Surface comparators allow the estimation of surface roughness by both touch and sight. These simple roughness gauges consist of 4 blasted profiles of varying roughness and are available either in a grit blasted or a shot blasted version. Conforms to ISO, ASTM
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Similar to the other comparators, the ship propeller roughness comparator have been developed for the specific profiles related to the condition of ships propellers over the life of the propeller. Comparators are also supplied with guidance on the report for Propeller Blades.
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The Elcometer 119 pipe pit gauge is a small pocket sized gauge designed to identify the condition of a pipe. The gauge is placed horizontally on the surface of the pipe and the stylus is positioned into the base of the corrosion pit. The gauge shows the pit depth compared to the nominal pipe wall thickness.
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