Operation and Menu Structure
NewSonic SonoDur-R
Issue 105 06/2020
Page 41
Practical experience gained from the very low exemplary scattering of SonoDur probes has shown
that the adjustments with different testing forces and for all types of probes result in a very good
concordance. Therefore, no distinction, e.g., for the adjustment number CAL, has been made
between testing forces in the material tables F2, F3, F4, F5 (EN ISO 18265) or T4, T7, T8, T9 (ASTM
E140). In any case, the use of a first approximation of an adjustment result for other testing forces is
correct for the correction of the E-Module influence, provided that no surface effects (hardening
layer, roughness) represent issues.
WARNING
Therefore, calibration data can in principle also be used for test probes with different testing forces.
However, this resides in the responsibility of the tester.
In case of doubt, a probe with suitable testing forces should be chosen!
7.10
Conversions
7.10.1
Hardness Scale
The hardness scale can be accessed directly by tapping the current scale in the measurement menu
or via Menu -> Conversions.
7.10.2
Standard (Norm)
The most recent versions of the two conversion standards are available according to ASTM E140 and
EN ISO 18265, respectively - status 2015.
WARNING
Please absolutely comply with the conversion limits. When exceeding or falling below these values
(e.g. in the HB scale), the message
Outside the HB conversion
will be issued and the info window
will display the measured values as being deleted (also refer to the representation of the measured
values outside the conversion limits,
Section 7.10.4 Presentation of the measurement values
Figure 7.74