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Common
Direction Naming Conventions
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| Directional
conventions are also of the utmost importance to set up and use. A simple,
common sense convention insures that whomever is collecting the data is
aware of the correct transducer location and direction. It also means the
analyst, if different than the data collection technician, can analyze
the data with confidence. This convention goes to the heart of one of the
most important aspects of a vibration program - the repeatability of readings
from one data collection to the next (what good is a trend without good
repeatability ?). Its importance goes hand-in-hand with the importance
of making sure the exact transducer locations are clearly marked. The convention
begins with ONE hard rule: |
| Axial Direction
is always, Always, ALWAYS parallel to shaft axis |
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| Let's start
with horizontal, direct drive machines. These machines are the most simple
to define.
1. Axial
Direction - Runs along the axis of the
machine's shaft (parallel to the shaft & ground).
2. Vertical
Direction - The shortest line possible
connecting the machine shaft and the machine base.
3. Horizontal
Direction - A line drawn out from the
machine shaft that runs exactly parallel to the ground. |
