B-13
TERM DEFINITION
Cubic Foot
The most common unit of measurement of gas volume in the US. It is the
amount of gas required to fill a volume of one cubic foot under stated conditions
of temperature, pressure, and water vapor.
Cubic Foot Metered
The quantity of gas that occupies one cubic foot under pressure and
temperature conditions in the meter.
Cubic Foot, Standard
That quantity of gas which under a pressure of 14.73 psia and at a temperature
of 60 degrees occupies a volume of one cubic foot without adjustment for water
vapor content.
Cubic Meter
Acronym CM. Metric volume equal to 35.31467 Cubic Feet.
Cubic Meter Per Minute
Acronym CMM. Metric flow rate equal to 35.31467 Cubic Feet per Minute.
Cumulative Capacity
The total number of ampere-hours (or watt hours) that can be withdrawn from a
cell/battery under specified conditions of discharge over a predetermined
number of cycles or the cycle life.
Current
Current is measured in amps (milliamps and microamps). It is the passage of
electrons. Conventional current flows from positive to negative. Electrons flow
from negative to positive - called "electron flow".
Cursor
Dots used to indicate the location of the next character or symbol to be entered.
Custody Transfer
The legal and commercial transfer of a commodity such as natural gas, LNG,
etc. from one party to another.
Custody Transfer
Transaction
The Custody Transfer Transaction is the hand-off of the physical commodity
from one operator to another.
Cut-Off Voltage
The cell/battery voltage at which the discharge is terminated.
CV
Calorific Value. European value of heating content.
CV1
Column 1 Vent (located on NGC8200 series Feed-Through Assembly).
CV2
Column 2 Vent (located on NGC8200 series Feed-Through Assembly).
CWE Cold
Weather
Enclosure.
Cycle
One complete sequence of events. One complete alteration of an AC current or
Volt. The discharge and subsequent charge of a rechargeable cell/battery is
called a cycle.
Cycle Life
The number of cycles under specified conditions which were available from a
rechargeable cell/battery before it fails to meet specified criteria as to
performance.
Cycle Time
The time usually expressed in seconds for a controller to complete one on/off
cycle.
Cyclic Redundancy Check
An ongoing verification of the validity of transmitted and received data providing
assurance that the message conforms to a pre-agreed upon convention of
communications.
D/A
See Digital-to-analog.
D/I
See Digital Input.
D/O
See Digital Output.
DAC
See Digital to Analog Converter.
DACU
Data Acquisition Control Unit.
Data Acquisition
Gathering information from sources such as sensors and AMUs in an accurate,
timely and organized manner. Modern systems convert this information to
digital data, which can be stored and processed by a computer.
Data Collect
Physically, locally or remotely, retrieving data stored with a Totalflow unit. This
data is typically stored in records located in a data base format.
DB See
Decibel.
Summary of Contents for XRC6490
Page 1: ...2100802 001 AB TOTALFLOW XSeries Remote Controller User s Manual ...
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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 ...
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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 ...
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Page 112: ...5 24 12V Communication Supply Voltage Test Cont Figure 5 9 XRC 195 Communication Wiring ...
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