User Manual

G-6
RBM
Reliability Base Maintenance – the modern maintenance management
method that integrates preventive, predictive, and proactive maintenance
strategies. This total management method not only improves detection
methods but uses root cause analyses to find and correct the actual cause(s)
of the problems thereby eliminating unpredictable failures in the future.
Repeatability
The consistency (or variation) of readings and results between consecutive
sets of measurements.
Resolution
The smallest change or amount that a measurement system can detect.
Reverse Indicator Method
Method for taking shaft alignment reading with indicators mounted radially
at opposite ends of a spanned section (on each machine).
Rim and Face Method
See Face-rim Method.
Rise/Run
For smaller angles, the ratio obtained when the change in offset between
two centerlines is divided by the distance along either centerline (between
the points of offset measurement). In effect, it is the slope of one line in a
plane compared to another line in the same plane. Angularity is normally
specified in mils/inch, or milliradians which is rise/run.
Rotor
The part (or assembly of parts) of a machine that spins or revolves as a
single unit. For alignment purposes, the shafts of both machines are the
rotors.
RS232
A serial, asynchronous communication standard; a type designation for
cables that are used to connect communications ports on host computer,
analyzer, and telephone modems.