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MAX II Bolt Tension Monitor
4.2 CAL – Menu
ZERO MODE: The MAX II is zeroed in much the same way that a mechanical
micrometer is zeroed. There are three zero mode options available in the MAX II –
FIXED, ONE POINT, TWO POINT and AUTO. Selecting the proper mode is
dependent on the application requirements, but the most convenient mode of
preference is - AUTO. Refer to page 48, for an explanation of this important
procedure.
ZERO VALUE: Depending on the Zero Mode selected above, the actual zero value
will be calculated and displayed in this sub menu item. The user can edit this value
at anytime from this sub menu item. Refer to page 48 for a further explanation.
MEASURE ZERO: Once the Zero Mode has been selected above, this function
displays and calculates the actual measurement screen containing the known
physical length, velocity, and temperature coefficient of the calibration standard
versus the ultrasonic length. . Refer to page 48 for a further explanation.
LOCK SYS ZERO: Locks the zero value in the calibration menu from being
overwritten by opening previously saved setup files. Each setup file records the
system zero at the time it was saved. Refer to page 135 for a further explanation.
LOAD CAL MODE: Enables and disables the field calibration feature of the MAX II.
This is used to compare known and ultrasonic loads. Refer to page 89 for a further
explanation.
LOAD CAL CALC: This feature is used to calculate a linear regression or vector
curve, once the Load Cal Mode is enabled and known and ultrasonic loads have
been entered and ultrasonically measured. If the regression option was selected in
Load Cal Mode, a correction load offset and load factor will be calculated. If the
vector option was selected, a load factor will be calculated and the offset will be set to
zero. Refer to page 89 for a further explanation.
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