B-20
TERM DEFINITION
File
A set of related records or data treated as a unit.
Film Liquids
Aerosols liquids who have contacted each other and become adhered to the
inside of the pipeline.
Firmware
A computer program or software stored permanently in PROM or ROM or semi-
permanently in EPROM.
Firmware Version
This refers to the version of firmware contained in the equipment.
Fixed-Point
A format for processing or storing numbers as digital integers.
Flag
Any of various types of indicators used for identification of a condition or event;
for example, a character that signals the termination of a transmission.
Flameproof Enclosure “d”
Enclosure which can withstand the pressure developed during an internal
explosion of an explosive mixture, and which prevents the transmission of the
explosion to the explosive atmosphere surrounding the enclosure.
Flammable
A liquid as defined by NFPD and DOT as having a flash point below 37.8°C
(100°F).
Flange
For pipe, a metal collar drilled with bolt holes and attached to the pipe with its
flat surface at right angles to the pipe axis so that it can be securely bolted to a
mating flange on a valve, another pipe section, etc.
FLASH
Re-programmable memory onboard an XFC/XRC, similar to an EPROM,
except that it can be programmed while in circuit using a Boot Loader Program
to write to it. Generally used for the operating system and application code
space (non-volatile).
Flash ADC
An Analog to Digital Converter whose output code is determined in a single
step by a bank of comparators and encoding logic.
Flash Point
The temperature at which a liquid will yield enough flammable vapor to ignite.
There are various recognized industrial testing methods; therefore the method
used must be stated.
Flash Vapors
Gas vapors released from a stream of natural gas liquids as a result of an
increase in temperature or a decrease in pressure.
Flow
Travel of liquids or gases in response to a force (i.e. pressure or gravity).
Flow Computer, XSeries
A device placed on location to measure SP, DP and temperature (to calculate
flow) of gases or liquids being transferred, for remote unattended operation.
Flow Formulas
In the gas industry, formulas used to determine gas flow rates or pressure
drops in pipelines, regulators, valves, meters, etc.
Flow Rate
Actual speed or velocity of fluid movement .
Flowmeter
A device used for measuring the flow or quantity of a moving fluid.
Fluids
Substances that flow freely; gases and liquids.
FM
Factory Mutual Research Corporation. An organization which sets industrial
safety standards.
FM Approved
An instrument that meets a specific set of specifications established by Factory
Mutual Research Corporation.
Font
The style of lettering used to display information.
Footprint
The surface space required for an object.
Fpb
Pressure Base factor.
FPM
Flow velocity in feet per minute.
FPS Flow
velocity
in feet per second.
Fpv
See Supercompressibility Factor.
Fr
Reynolds Number factor.
Summary of Contents for XRC6490
Page 1: ...2100802 001 AB TOTALFLOW XSeries Remote Controller User s Manual ...
Page 6: ...iv B B Bl lla a an n nk k k P P Pa a ag g ge e e ...
Page 10: ...viii B B Bl lla a an n nk k k P P Pa a ag g ge e e ...
Page 19: ...1 5 Standard Enclosure Cont RC 6790 X Figure 1 2 Model XRC6790 Continued on Next Page ...
Page 41: ...1 27 Totalflow Input Output Modules Cont Figure 1 16 XRC6990 Inside View ...
Page 42: ...1 28 B B Bl lla a an n nk k k P P Pa a ag g ge e e ...
Page 64: ...2 22 B B Bl lla a an n nk k k P P Pa a ag g ge e e ...
Page 86: ...4 12 Replacing XRC 195 Board Cont Figure 4 5 XRC Board Connections ...
Page 88: ...4 14 B B Bl lla a an n nk k k P P Pa a ag g ge e e ...
Page 112: ...5 24 12V Communication Supply Voltage Test Cont Figure 5 9 XRC 195 Communication Wiring ...
Page 292: ...A 176 B B Bl lla a an n nk k k P P Pa a ag g ge e e ...
Page 340: ...B 48 B B Bl lla a an n nk k k P P Pa a ag g ge e e ...
Page 342: ...C 2 B B Bl lla a an n nk k k P P Pa a ag g ge e e ...
