EF-Series Instruction Manual
Rev 2/01 G-1
GLOSSARY OF TERMS
A
A/D — Analog to Digital.
AGA — American Gas Association.
AI — Analog Input.
AO — Analog Output.
Analog — Analog data is represented by a continuous variable, such as a electrical current signal.
AP — Absolute Pressure.
API — American Petroleum Institute.
ASCII — American Standard Code for Information Interchange.
AW G — American Wire Gauge.
B
BTU — British Thermal Unit, a measure of heat energy.
Built-in I/O — Input/Output channels that are fabricated into the ROC or FloBoss and do not require a
separate module. Also called “on-board” I/O.
C
COM1 — Port on the flow computer that is used for host communications.
Configuration — Typically, the software setup of a device that can often be defined and changed by
the user. Can also mean the hardware assembly scheme.
CRC — Cyclical Redundancy Check.
CSA — Canadian Standards Association.
CTS — Clear to Send modem communications signal.
D
D/A — Digital to Analog.
DB — Database.
dB — Decibel. A unit for expressing the ratio of the magnitudes of two electric signals on a
logarithmic scale.
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