ISO 17025 Accredited Calibration of Ultrasonic Thickness Tester

J

jfgunn

Does Anyone has an ISO 17025 accredited Source for calibration of Ultrasonic Thickness Testers? I have a Krautkramer Branson CL3 that I need an accredited cal for.
 
S

shard923

I am unsure of their accredidation status, but have you tried GE Inspection Technologies in PA? They used to be Krautkramer, then AGFA NDT, and now GE Inspection Technologies.
 

Hershal

Metrologist-Auditor
Trusted Information Resource
Is this device similar to a flaw detector used by the NDT folks?
 
J

jfgunn

Thank you!

This gage is used to measure the thickness of metal sheets in a stamping company.

I appreciate eveyone's input. I just found out that I no longer need an accredited source for this.

Thank you!
 

Hershal

Metrologist-Auditor
Trusted Information Resource
That you don't need an accredited source may be good. The NDT folks (AWS NDT Level I, II, III) use ultrasonic systems to find welding flaws and finding accredited calibration on the West Coast has been almost impossible. The solution has been to get the IIA blocks calibrated. Of course, other NDT methods are not affected by that exact situation.

You may have found the same situation if the requirement had not been eased.

I'm glad you have a beneficial resolution.

But it then brings up the question, how do you know that the metal sheets are in fact what the ultrasonic systems says they are. You should still address how to assure the validity of the measurement.

Hershal
 
S

Southern Girl

:confused: Does this ultrasonic thickness tester use various thickness discs as masters? If so, all you need for calibration is a micrometer to verify the disc thickness.
 
J

jfgunn

This gage was one thast I was taking care of for one of my QS9000 Customers. They used the gage to be relatively sure of the metal thickness before stamping it into parts.

They have decided that since they measure the final part with micrometers, calipers, dial indicators, etc, that they do not need to have a perfect measurement of the initial metal thickness. THis could lead to some scrap, but is perfectly acceptable for their QS9000.

We had calibrated this in the past using gage blocks on a surface plate which worked quite well. The point which was brought up about verifying disc masters with a micrometer is valid, but I would still have to have Ultrasonic thickness testers listed specifically on my ISO/IEC 17025 Accredited Scope for Calibration.

When we initially became Guide 25 accredited (about four years ago), parameters were listed in a very general way, "Length" for example. At some point (I can't remember when since I have been through so many scope changes in the pat three years), they switched to listing Calipers, micrometers, height gages, dial indicators, etc... When the scope listed length, verifying the ultrasonic thickness tester with gage blocks was OK, but since they have required us to list specific items, I would need this to be listed separately.

Thank you again for your input.
 
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