Rockwell Automation 1441-PEN25-Z Enpac 2500 Data Collector - Manual (Page 318)

318 Rockwell Automation Publication GMSI10-UM002D-EN-E - August 2012
Glossary
magnitude alarm An alarm that defines the safe operating boundary for magnitude data from a
piece of equipment or a process. Magnitude data can be overall vibration,
temperature, operating speed, or any other process measurement.
magnitude measurement Single value representing the total energy of a measurement. For example, a
vibration magnitude represents the total energy in a vibration spectrum. Trends
of magnitude readings are typically used to predict when a machine or process
could exceed safe operating conditions.
measurement A measurement is a single reading collected from a location and controlled by a
measurement definition. Measurements are usually collected with a data
collector, and stored in the database. The measurement may be magnitude data
such as an overall displacement value, spectrum data such as a single acceleration
spectrum, or some other kind of data.
measurement definition A measurement definition is a set of parameters that controls the collection of a
measurement. It defines the type of measurement (for example, magnitude,
spectrum, time). It also includes the collection, measurement filter, and storage
specifications. Each measurement definition is attached to a location.
measurement filter A filter that is applied when taking a measurement. It is specified as part of a
measurement definition, and my be either a band filter or other type of filter such
as an envelope or overall filter.
memory card See PCMCIA
note codes See inspection codes
numeric measurement Also called process point. A single value that indicates the general condition of a
process or equipment. For example, numeric measurements can be used to record
any of the following: temperature, pressure, flow, valve position, operating speed,
operational hours.
operating system The internal software of a data collector that determines how the data collector
operates. You should always use the most recent operating system version
available to you.
orders Multiples of the operating speed of a piece of equipment. The first order is the
operating speed. The second order is two times the operating speed, and so on.
overload Occurs when the input signal from your transducer exceeds the current setting of
the data collector hardware. You should not collect data when the input signal is
generating an overload condition of the data collector; instead, you should adjust
the data collector settings for the transducer.
Personal Computer Memory Card
International Association
(PCMCIA) card
A removable hardware card, or memory card, containing non-volatile memory
for additional storage, used with a computer or data collector.
plot A plot is a graphical display of data. Some examples are spectrum, trend, and time
plots.