Automet® FAB - Analysis Co-ordinate System
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Coordinate Systems
Understanding polar and rectangular component direction methods in automet® FAB.
automet® FAB has two different ways of directing components: polar and rectangular.
Coordinate Systems Comparison
Rectangular (Cartesian)
The rectangular system is the most common way to locate pipe components. It uses three mutually perpendicular axes (X, Y, and Z) to define a position from a fixed origin point.
Directions correspond to main plant axes:
- ±X: East / West
- ±Y: North / South
- ±Z: Elevation (Up / Down)
Rectangular axis layout
Rectangular example
Polar
Defines a 3D direction vector from a center point using two specific angles: azimuth and zenith.
Key angular definitions:
- Azimuth: The horizontal angle (0–360°) measured clockwise from North (+Y). 90° is East, 180° is South, and 270° is West.
- Zenith: The vertical angle (0–180°) measured down from the +Z axis (straight up). 90° is horizontal.
Polar axis layout
Polar example