Appendix C Glossary - Emerson Rosemount 2051 Reference Manual

Reference Manual
00809-0100-4101
C Glossary
Some of the terms used in this manual relate specifically to the operation of Rosemount
transmitters, handheld HART
following list provides brief definitions. See the sections listed for additional information.
Analog Output Trim
Cloning
Commissioning
Configuration
Damping
Descriptor
Digital Trim
Failure Mode Alarm
Factory Characterization
Full Trim
HART (Highway Addressable Remote Transducer)
Protocol
Reference Manual
Communicators, and other Rosemount products. The
®
Digital trim operation that allows adjustment of
the output electronics to conform to the plant
standard of current. Two types of analog output
trim are available: 4–20 mA output trim and 4–20
mA other scale.
Off-line operation that uses a HART-based
communicator to copy configuration data
from one transmitter to one or more other
transmitters that require the same data.
Functions performed with the HART-based
communicator and the transmitter that test
the transmitter and test the loop, and verify
transmitter configuration data.
Process of setting parameters that determine
how the transmitter operates.
Output function that increases the response time
of the transmitter to smooth the output when
there are rapid input variations.
Sixteen-character field for additional
identification of the transmitter, its use, or
location. The descriptor is stored in the
transmitter and can be changed using the HART-
based communicator.
Format function that allows you to adjust the
transmitter characterization for purposes of
digital calibration to plant standards. Digital trim
includes two separate operations: sensor trim
and analog output trim.
Transmitter function that drives the analog
output to a jumper-selectable high or low value
in the event of an electronics failure.
Factory process during which each sensor
module is subjected to pressures and
temperatures covering the full operating range.
The sensor module memory stores data
generated from this process for use by the
microprocessor in correcting the transmitter
output during operation.
Sensor trim function in which two accurate, end-
point pressures are applied and all output is
linearized between them. The selected end points
should always be equal to or outside the LRV and
URV.
Communications standard that provides
simultaneous analog and digital signal
transmission between control rooms and field
devices such as transmitters.
Glossary
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