B-4
TERM DEFINITION
Analog-to-Digital Converter
An electronic device, often an integrated circuit, that converts an analog voltage
to a number.
Analytical Module
Totalflow Analytical Module assembly contains the GC Module, Manifold and
Analytical Processor. The modular design features Single Bolt removal.
Analytical Processor
Assembly
The Analytical Processor board interfaces with the analog circuits to monitor
temperatures, and pressures, and also control the processes. The data
generated by the Analytical Processor is passed to the Digital Controller board.
Analyzer Control Module
Consists of various electronic components used for analysis.
Anemometer
An instrument for measuring and/or indicating the velocity of air flow.
Annealed
Toughen (steel or glass) by a process of gradually heating and cooling,
Annunciator
Display of a status on a screen.
ANSI American
National
Standards Institute.
Antenna
A length of wire or similar that radiates (such as a transmitting antenna) or
absorbs (such as a radio antenna) radio waves. The two basic types are: Yagi
(directional) or Omni (bi-directional).
AO Analog
Output
AP See
Absolute
Pressure.
API 14.3
American Petroleum Institute Report No. 14.3 addresses the 1992 equation
regarding the AGA-3 method for calculating gas volume across an Orifice Plate.
API 21.1
American Petroleum Institute Report No. 21.1 addresses the equation
regarding AGA-8 Fpv or Supercompressibility Factor and the energy content of
the gas.
API Gravity
An arbitrary scale expressing the relative density of liquid petroleum products.
The scale is calibrated in degrees API. The formula is:
5
.
131
60
/
60
(
5
.
141
−
⎥
⎦
⎤
⎢
⎣
⎡
°
°
=
F
F
DegAPI
γ
where
γ
=relative density.
Archive
A file containing historical records in a compressed format for more efficient
long term storage and transfer. Totalflow archive records are non-editable,
meaning that when they are stored they may not be changed. These records
are used during an audit of data.
Artificial Drives
Techniques for producing oil after depletion or in lieu of natural drives; includes
water flooding, natural gas re-injection, inert gas injection, flue gas injection and
in-situ combustion.
Artificial Lift
Any of the techniques, other than natural drives, for bringing oil to the surface.
ASCII
American Standard Code for Information Interchange. A very popular standard
method of encoding alphanumeric characters into 7 or 8 binary bits.
ASME
American Society of Mechanical Engineers.
ASTM
American Society for Testing and Materials (ASTM International).
ASTM D 3588
ASTM International Standard Practice for calculating heat value, compressibility
factor and relative density of gaseous fuels.
Asynchronous
A communications protocol where information can be transmitted at an
arbitrary, unsynchronized point in time, without synchronization to a reference
time or "clock".
ATC
Automatic temperature compensation.
ATEX
Term used for European Union’s New Approach Directive 94/9/EC which
concerns equipment and protective systems intended for use in potentially
explosive atomoshperes.
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 ...
