How to do a proper hand-held hardness test

Time:2021-12-01
Hand-held hardness tester although in the use of a lot of convenience, but in the application of a lot of restrictions.

Hand-held hardness tester although in the use of a lot of convenience, but in the application of a lot of restrictions.





Generally speaking, the hand-held hardness tester can only measure the standard rubber block. The standard block should meet the thickness of 6mm and the circular area of no less than 24mm diameter.








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There are also a number of operational considerations, such as holding the durometer as tightly as possible and pressing down at a 90 degree vertical Angle until the probe is fully embedded in the sample.









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If an analog hardness tester is used, after the probe is completely pressed into the sample, it needs to be silently counted for 3 seconds. The hardness value after 3 seconds is the hardness value in the standard specification and the most stable hardness value.








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Hand-held durometers are often misused in thin rubber parts, such as o-rings that do not provide adequate measurements of area and flesh thickness. This application is incorrect and may result in incorrect measurements.