Machines used to test resistance of hardened concrete to compression are verified in accordance with EN 12390-4 European Standard, which is part of the set of standards EN 12390 and EN 12350 on concrete tests. From the forces point of view, verification is based on two main points:

• The compression force generated by the testing machine on the specimen, which metrological characteristics are measured by using a traditional compression load cell previously calibrated and classified according to ISO 376.

• The transfer of compression force to the test specimen. This verification requires a specific compression load cell called "strain cylinder", which performance must be previously validated by means of a specific calibration. This type of transducer belongs to SENSY’s range of production and some Metrological Institutes are in a position to perform the required calibration.

• This strain cylinder could be combined, in some conditions, to a standard force transducer.

• The DIN 51302 Standard has virtually disappeared and has been replaced by the new EN 12390-4 Standard.

Learn more about strain cylinders load cells and the verification of testing machines for concrete according to EN 12390 : Testing machine verification.

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