Gocator Line Profile Sensors: User Manual
Gocator Web Interface • 189
Parameter Description
Surface Offset The distance between the edge region and the surface region.
Setting a small value allows the edge within a tighter region to be detected. However, the
measurement repeatability could be affected if the data from the edge are considered as
part of the surface region (or vice versa). A rule of thumb is to set Surface Offset equal to
Nominal Radius.
Nominal Radius
The radius of the curve edge that the tool uses to locate the edge region.
Edge Angle
A point on the best fit circle to be used to calculate the feature point. The selected point
is on the circumference at the specified angle from the start of the edge region.
The angle is measured from the axis perpendicular to the fitted surface line.
Edge Type
Defines the type of feature point to use for the edge (Corner or Tangent).
A tangent edge point is the point selected based on the defined Edge Angle. A corner
edge point is the intersect point between the fitted surface line and a edge line formed
by interpolating the points at and after the tangent within the edge region.
The Data Viewer displays the gap measurement in real time. It also displays the results from the
intermediate steps in the algorihtm.
Position
The Position tool finds the X or Z axis position of a feature point. The feature type must be specified and
is one of the following: Max Z, Min Z, Max X, Min X, Corner, Average (the mean X and Z of the data
points), Rising Edge, Falling Edge, Any Edge, Top Corner, Bottom Corner, Left Corner, Right Corner, or
Median (median X and Z of the data points). Gocator compares the measurement value with the values
in Min and Max to yield a decision. For more information on decisions, see Decisions on page 159.
The Position tool can be used whether Uniform Spacing is enabled or not, that is, with either
resampled or unresampleddata. For more information on the Uniform Spacing setting and
resampled data, see Uniform Spacing (Data Resampling) on page 53.
See Adding and Configuring a Tool on page 156 for instructions on how to add measurement tools.
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