56 Versitron Operation Manual
6.0 INDIRECT CALIBRATION
The Indirect Calibration should not be revised on a routine basis. The process consists
of three optional indirect calibration levels: Machine level, Indenter level and
Hardness Scale level. The Machine calibration level is the broadest and more
extensive method as it incorporates both the indenter and the hardness scale
approaches, it requires a minimum of three different reference blocks per hardness
scale range and it’s recommended to take a minimum of three readings per reference
block per indenter type (diamond and ball). The Indenter calibration level is more
suitable for applications where the use of different indenters (ball and diamond) is the
norm. The Hardness Scale calibration level approach is more practical to applications
where a specific group of hardness scales is used on a regular basis, it requires a
minimum of three different reference blocks per hardness scale and it’s recommended
to take a minimum of three readings per reference block covering all the hardness
scales intended to be used.
The Indirect Calibration function can be accessed from the Advanced Settings screen
under the Technician option. This option is password protected and it requires the
technician to enter the Technician passcode at the keypad prompt.
After a successful entry the technician can select the Indirect Calibration Set tab to
access this function, the Indirect Calibration screen allow the selection of a
Hardness Scale to calibrate.
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