Key features and benefits of the Elcometer 480 Single, Dual and Triple Angle Glossmeter
In the Industrial and Decorative coatings markets, colour and gloss of the finished products are two key parameters used to determine a product’s overall quality.
Gloss can be defined as an attribute of surfaces that causes them to have a shiny appearance. Surface finish can range from high gloss, such as most vehicle finishes, to low gloss finishes found on interior wallcovering coatings.
The science behind gloss is simple- the greater the amount of reflected light, the higher the gloss. Trying to visually compare one sample with another can be very difficult if gloss is quite similar and can only be a subjective opinion. It is possible for people to use different criteria to describe gloss, leading to different rankings of a sample under test.
Glossmeters, such as the Elcometer 480, provide a quantifiable method of determining how much light is reflected from a surface and provide the user with a numerical gloss measurement in GU (gloss units), allowing a conclusive comparison between surfaces.
The Elcometer 480 gloss meter has a capability of measuring different measurement angles. This allows the glossmeter to measure gloss over the greatest range of different gloss values. The 20° angle is used for high gloss applications, the 60° for medium gloss and the 85° angle for low gloss/semi-matt finishes. The triple angle version of the Elcometer 480 Glossmeter can measure any combination or all three of these angles simultaneously and is the fastest hand-held glossmeter on the market today. The Elcometer 480 Glossmeter also has a Haze measurement capability and can measure Haze in accordance with ASTM D4039.
Calibration and Diagnostics
Each Elcometer 480 Glossmeter is supplied with a high gloss calibration tile to ensure measurement accuracy and repeatability.
Every time the gauge is switched on, with the calibration tile fitted, the gauge undertakes an internal diagnostics and performance routine. Electronics, optics and hardware performance are all tested to ensure that they are within specification. The calibration tile is also checked to ensure that it is not damaged or dirty. If everything is within specification, the gauge is ready to take readings. If the gauge is outside specification or the calibration tile is damaged or dirty, the gauge will inform the user accordingly.
Every Elcometer 480 Gloss Tile is fitted with an RFID (radio frequency identification) tag which allows automatic identification of the tile’s serial number and calibration data when the tile is attached to the base of the gauge. The integrated RFID technology ensures the gauge is calibrated correctly every time, without the need to manually enter calibration data.
When the maximum accuracy is required, alternative calibration tiles with traceable certificates at low, medium, high and mirror gloss values are available.
In Scan Mode, the Elcometer 480 Gloss Meter has a very high reading rate of up to 10 readings per second on all 3 angles. This enables a user to carefully scan over the entire surface area and get an average, highest reading and lowest reading- ideal for checking a sample’s overall uniformity.
This rapid scanning functionality is especially powerful when paired with the data storage capability of the Elcometer 480 Top Model, allowing vast amounts of data to be collected within the gauge’s memory. Information from multiple glossmeters can be combined into a single inspection report within ElcoMaster® , ideal for multiple production and assembly lines.
When visual appearance is critical, Master Standards are created. These are generated and approved by the customer and then used by manufacturers as part of their quality control inspection regime. As these Master Standards have been visually approved they often do not have numerical gloss values assigned.
In order to avoid subjectivity between inspectors, the Elcometer 480 can automatically generate and store the nominal (target) and highest & lowest acceptable gloss values (Limits) from the Master Standard. Up to 40 Limits for each customer's Master Standards can be stored within, and recalled from, the gauge's 'Limit Standard' memory.
Readings outside the Limit Standard are displayed in red, providing quick Pass/Fail analysis.
Due to the Elcometer 480's industry leading inter-instrument agreement, once a Master Standard Limit has been created, the gauge can transfer these values to the Library of Limit Standards within ElcoMaster® and then transfer them to other Elcometer 480 gauges.