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Ever since the launch of the coating thickness gauge in the 1940’s, individual thickness measurements have been used to calculate a coating’s average (), highest and lowest dry film thickness values so that they could be compared to a coating’s specification.
enables users to automatically compare thickness values to a coating’s specification, display trend graphs, store individually time and date stamped thickness readings into memory. The gauges can even transfer data wirelessly to a mobile cell phone, recording the GPS coordinates of precisely where the measurement was taken.
Standard and test methods today typically require inspectors to take a number of individual spot measurements over the coated surface. Whilst gauge measurement speeds have increased significantly (almost doubling to in excess of 70 readings per minute in the new Elcometer 456) it is the historical design of a coating thickness gauge which has determined the time taken for an Inspector to carry out a coating thickness inspection as the gauge requires the probe to be lifted off the surface in between each measurement.
Introducing the new Elcometer 456 with Ultra/Scan Probes
Elcometer’s new Ultra/Scan Probes for the Elcometer 456 Coating Thickness Gauges not only allows Inspectors to drag the probe across a coated surface without damaging the probe or the coating, but also increases the reading rate of the Elcometer 456 coating thickness gauge to in excess of 140 readings per minute – dramatically speeding up the measurement of a coated ferrous (F) or non-ferrous (NF) metal substrate.
Each Ultra/Scan probe has been designed to take a ‘snap on’ replaceable end cap, so that the sliding action required to achieve a scan of a coated surface does not cause any wear to the probe tip, crucial to maintaining the accuracy of the probe over its life.
Using the Elcometer 456’s patented offset feature, the thickness of the cap is excluded from any coating thickness measurement and, as the cap wears during use, this wear effect is also accounted for. The gauge will even display a warning message when the wear cap needs to be replaced.
The Elcometer 456 Ultra/Scan probe can be used as a traditional coating thickness probe or can be used to measure in either Scan or Auto Repeat Modes.
Scan Mode
When selected, Scan Mode allows users to slide the Ultra/Scan probe over the entire surface area. As the probe is lifted off the surface, the gauge not only displays the average () coating thickness, but also the highest and lowest coating thickness values over the entire scan.
Each set of three readings is then stored into memory, together with the date and time of the scan. The values can also be displayed on the gauge’s display as a run chart.
During each scan, the Elcometer 456 displays the live thickness reading – together with an analogue bar graph which graphically indicates the thickness relative to both the nominal thickness and any user defined thickness limits.
Put simply, the user can now just ‘drag’ the probe continuously across a coated item and, upon removing the probe from the surface, at a glance, see on the display the average, highest and lowest readings, as well as whether they are inside or outside any pre-determined limits - thus providing invaluable and immediate information.
The Scan Mode can also be used with a ‘hold’ function. This feature allows the probe to be momentarily lifted from the surface to clear areas such as welded joints or cut outs and then placed back in contact with the coating to continue data recording without interruption of the data set.Nike Zoom Kobe IV