Using the Elcometer 456 Zero Offset Calibration in accordance with ISO 19840 on Ferrous Substrates

How to calibrate the Elcometer 456 Coating Thickness Gauge in accordance with ISO 19840, for rough surfaces (or blast coated substrates), on ferrous substrates.
Get the best performance from the Elcometer 456 Coating Thickness Gauge and make the best use of the gauge’s ±1% accuracy by calibrating the coating thickness instrument to suit the application.
The Elcometer 456 Dry Film Thickness Gauge can measure the thickness of a coating on smooth, and on rough or blast coated substrates; and there are a number of calibration methods for each substrate profile.
When measuring on rough surfaces, if you have access to a sample of the uncoated substrate you will be measuring, then you should undertake a rough surface (or 2-point) calibration.
However, if you don’t have access to the uncoated substrate, then you can use the Elcometer 456’s patented Zero Offset calibration method, which helps measure film thicknesses in accordance with ISO 19840.
ISO 19840 simply states that if a blast profile is unknown, you should calibrate on smooth steel and then subtract a predefined correction value from the measurement taken on the coated surface.
The Elcometer 456’s patented zero offset calibration automatically subtracts this correction value from the measurement, so you don’t have to.
The Elcometer 456 is an intelligent gauge, so, once the gauge has been set to the Zero Offset Calibration, it will guide you through the calibration process, one step at a time.
For more information on the Elcometer 456 Coating Thickness Gauge, please contact Elcometer at [e-mail] or visit our website: www.elcometer.c...
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STANDARDS:
AS 2331.1.4, AS 3894.3-B, AS/NZS 1580.108.1, ASTM B 499, ASTM D 1186-B, ASTM D 1400, ASTM D 7091, ASTM E 376, ASTM G 12, BS 3900-C5-6B, BS 3900-C5-6A, BS 5411-11, BS 5411-3, BS 5599, DIN 50981, DIN 50984, ECCA T1, EN 13523-1, IMO MSC.215(82), IMO MSC.244 (83), ISO 1461, ISO 19840, ISO 2063, ISO 2360, ISO 2808-6A, ISO 2808-6B, ISO 2808-7C, ISO 2808-7D, ISO 2808-12, NF T30-124, SS 184159, SSPC PA 2, US Navy PPI 63101-000, US Navy NSI 009-32

[@yuvarajv4134]

Please correct my understanding. Consider I am having sample rough blasted surface, to calibrate my elcometer 456 I have to choose rough Rough/2point cal method and place two std foils on blasted surface and follow the cal procedure mentioned on the screen. If there is any mistake in my understanding please comment me

[@ElcometerOfficialChannel]

Thank you for your comment. Yes, for calibrating the Elcometer 456 on rough surfaces, you should use the rough calibration method, using two calibration foils, and follow the on-screen instructions. Here is a link to our video on how to calibrate the Elcometer 456 using the Rough Calibration method: kzbin.info/www/bejne/gpm6ZKGCh5mJnZo If you have any further questions, please contact [e-mail] or visit www.elcometer.com/contact-us to find your local Elcometer distributor.

[@captainwesley5343]

Can I use this to measure curved surface? My plant has loads of cylindrical rolls with hard chrome surface that need periodic measurement of the chrome coating thickness

[@ElcometerOfficialChannel]

Hi, You can indeed measure curved surfaces using the Elcometer 456. It is also possible to measure the coating thickness of chrome on ferrous steel. Be sure to calibrate the gauge on an uncoated part of the cylinder. If you have any more questions, please get in touch at [e-mail]

[@captainwesley5343]

@@ElcometerOfficialChannel Thank you for taking time to answer my queries

[@AlaminHossain-ij3ut]

I currently possess Elcometer 456 A456CFBS. Which is Calibrated by Local Calibration Center. But when probe is placed on uncoated test plate the values does not show Zero values, rather negatives values are shown. What could be the reason behind this?

[@ElcometerOfficialChannel]

Hi, Please contact technical support for further calibration information at [e-mail]

[@wong_biyasa268]

How if DFT elcometer 456. Always Calibration please wait. On the screen. I wait long time always like that. So I can't to calibrate. What the something error. Please please help me...

[@ElcometerOfficialChannel]

Thank you for your comment. This sounds like it needs to be looked at by one of our repair centers. Please contact your local Elcometer distributor so they can service the gauge and probe. If you visit www.elcometer.com/en/contact-us.html you can find your local Elcometer distributor, and contact them via the form on our website, or via their external website where applicable.

[@rajendergirdhar8248]

Elcometer shows *Unstable ReadingError-Press a key* what is this?

[@ElcometerOfficialChannel]

Thank you for your comment. We are happy to help you with this issue. If you contact our global technical support department, they will be able to assist you over the phone. The phone number is [phone]. Alternatively, you can contact [e-mail] or visit www.elcometer.com/contact-us to find your local Elcometer distributor.

[@mdb13164]

What is thickness range it can measure in micron

[@ElcometerOfficialChannel]

Hi Kundan, The thickness range is defined by the range of the probe. For example, a scale 1 probe will measure 0-1500 microns whilst a scale 6 probe will measure up to 25mm

[@superconduct483]

Can I measure the thickness of window panel? Between 10mm to 40mm.

[@superconduct483]

Window glass panel is multiple layer. Glass and air and glass. I

[@ElcometerOfficialChannel]

Thank you for your comment. If you are able to place a piece of uncoated steel, such as an Elcometer ferrous zero plate, behind the glass panel; an Elcometer 456 with a Scale 7 probe can measure up to 31mm thick, and would measure distance from the probe to the steel panel when the probe is placed on the other side of the glass. This measurement would include both glass panels and the air between them. If you have any further questions, please contact [e-mail] or visit www.elcometer.com/contact-us to find your local Elcometer distributor.