Fisher FIELDVUE DVC6200 Instruction Manual page 105

Full Ranged Travel
Current, in mA, that corresponds with the point
where ranged travel is maximum, i.e., limited by
the mechanical travel stops.
Gain
The ratio of output change to input change.
Hardware Revision
Revision number of the Fisher Controls
instrument hardware. The physical components
of the instrument are defined as the hardware.
HART (acronym)
The acronym HART stands for Highway
Addressable Remote Transducer.
HART Tag
An eight-character name that identifies the
physical instrument.
HART Universal Revision
Revision number of the HART Universal
Commands which are the communications
protocol for the instrument.
Input Characteristic
The relationship between the ranged travel and
ranged input. Possible values include: linear,
equal percentage, and quick opening.
Input Current
The current signal from the control system that
serves as the analog input to the instrument. See
also Input Signal.
Input Range
The analog input signal range that corresponds to
the travel range.
Input Signal
The current signal from the control system. The
input signal can be displayed in milliamperes or in
percent of ranged input.
Instrument Level
Determines the functions available for the
instrument. See table 6-2, page 67.
September 2010
Instrument Mode
Determines if the instrument responds to its
analog input signal. There are two instrument
modes:
In Service: For a fully functioning instrument, the
instrument output changes in response to analog
input changes. Typically changes to setup or
calibration cannot be made when the instrument
mode is In Service.
Out of Service: The instrument output does not
change in response to analog input changes
when the instrument mode is Out of Service.
Some setup parameters can be changed only
when the instrument mode is Out of Service.
Instrument Protection
Determines if commands from a HART device
can calibrate and/or configure certain parameters
in the instrument. There are two types of
instrument protection:
Configuration and Calibration: Prohibits
changing protected setup parameters; prohibits
calibration.
None: Permits both configuration and calibration.
The instrument is "unprotected."
Instrument Serial Number
The serial number assigned to the printed wiring
board by the factory but can be changed during
setup. The instrument serial number should
match the serial number on the instrument
nameplate.
Leak Class
Defines the allowable leakage by a valve when it
is closed. Leak class numbers are listed in two
standards: ANSI/FCI 70-2 and IEC 534-4.
Linear
A valve flow characteristic where changes in flow
rate are directly proportional to changes in valve
stem travel. One of the input characteristics
available for a FIELDVUE Instrument. See also,
Equal Percentage and Quick Opening.
Linearity, dynamic
Linearity (independent) is the maximum deviation
from a straight line best fit to the opening and
closing curves and a line representing the
average value of those curves.
Glossary
B
Glossary
97