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ROC800-Series Instruction Manual
Revised Jul-14
Glossary
A-1
Appendix A – Glossary
Note:
This is a generalized glossary of terms. Not all the terms may
necessarily correspond to the particular device or software
described in this manual. For that reason, the term “ROC” is
used to identify all varieties of Remote Operations Controllers
(including ROC800-Series, ROC800L, DL8000, FloBoss™
107, and FloBoss
™
100-Series). Refer to
Measurement Units,
Symbols, and Abbreviations
(Form A6302) for additional
information.
A
A/D
Analog to Digital signal conversion.
ABS
Acrylonitrile Butadiene Styrene.
ADC
Analog to Digital Converter. Used to convert analog inputs (AI) to a format the flow
computer can use.
AGA
American Gas Association. A professional organization that oversees the AGA3
(orifice), AGA5 (heating value), AGA7 (turbine), AGA8 (compressibility), and AGA11
(ultrasonic) gas flow calculation standards. See
http://www.aga.org.AWG
American Wire Gauge.
AI
Analog Input.
AO
Analog Output.
Analog
Analog data is represented by a continuous variable, such as an electrical current
signal.
AP
Absolute Pressure.
API
American Petroleum Institute. See
http://www.api.org.
Area
A user-defined grouping of database entities.
ASCII
American (National) Standard Code for Information Interchange.
Attribute
A parameter that provides information about an aspect of a database point. For
example, the alarm attribute is an attribute that uniquely identifies the configured value
of an alarm.
B
BMV
Base Multiplier Value, used in AGA7 (turbine) calculations.
BPS
Bits Per Second, associated with baud rate.
BTU
British Thermal Unit, a measure of heat energy.
Built-in I/O
I/O channels that are fabricated into the ROC and do not require a separate option.
Also called “on-board” I/O.
C
C1D2
Class 1, Division 2 hazardous area
CMOS
Complementary Metal Oxide Semiconductor, a type of microprocessor used in a ROC.
Coil
Digital output, a bit to be cleared or set.
COL
Ethernet Packet Collision.
COM
Communications port on a personal computer (PC).