Checkline TI-MINIMAX - Manual (Page 28)

Dakota Ultrasonics
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Type: Select the bolt material type from a preset list of material types. Each
type contains a velocity, stress factor, and temperature factor. When a type is
selected, these values are displayed in the sub menu items below and can be
edited by the user at anytime.
Velocity: This feature allows the user to edit the material velocity at anytime.
Once a material type is selected, the velocity of the selected material type is
stored in this sub menu item and can be edited a by the user if necessary.
Stress Factor: This feature allows the user to edit the stress factor at anytime.
Once a material type is selected, the stress factor of the selected material type is
stored in this sub menu item and can be edited by the user if necessary. Refer to
section 10.3 for further info.
Temp Coeff: This feature allows the user to edit the material temperature
coefficient at anytime. Once a material type is selected, the temperature
coefficient of the selected material is stored in this sub menu item and can be
edited by the user if necessary. Refer to 10.4 for further info.
4.4 GEOM (geometry) – Menu
Quantity: Selectable units of measure in terms of TIME, ELONGATION, LOAD,
STRESS, and % STRAIN. Refer to section 12.1 for further info.
Load Factor: The conversion factor from elongation to Load. This value is
typically determined by performing a field calibration and running a regression or
vector using the MINI-MAX or utility software. Alternatively, the load factor can
be determined using the bolt calculator in the utility software. However, if
extreme accuracy is required, performing a field calibration is a must. This sub
menu item enables the user to edit the factor at anytime. Refer to section 11.1
for further info.
Load Offset: Normally the Load Offset is set to zero. However, when a field
calibration is performed and regression calculated a small offset (y intercept) will
result. This value is a constant added or subtracted from the measurement, and
will result in correction to the load quantity. This sub menu item enables the user
to edit the offset value at anytime. Refer to section 11.2 for further info.