B-29
TERM DEFINITION
Load (units)
The amount of gas delivered or required at any specified point or points on a
system; load originates primarily at the gas consuming equipment of the
customers. Also, to load a pressure regulator is to set the regulator to maintain
a given pressure as the rate of gas flow through the regulator varies. Compare
DEMAND.
Location File
This is a file containing the configuration of the Location or site and the
LevelMasters assigned to the Location. You may have a file that contains
everything or a file for each Location name. The information from the file is
displayed on the main MasterLink screen in the form of a tree structure. See
the Main Screen topic for more information.
Location Name
Location Name is the top of the hierarchy tree of a Location File. Included in the
Location Name is the LevelMaster's name, ID, S/N, Sensor File and
Configuration no.
Log Period
In a XFC, the specified length between writing the calculated accumulated
volume to record. You may record volumes as often as every minute and as
seldom as every hour. More frequent recording reduces the number of days of
records possible between collection.
Long Term
For Totalflow’s purpose, the application of this term refers to storing data over a
period of time that is greater than a minimal time. Such as data collected
weekly versus data collected weekly but stored indefinitely.
LPG
See Liquefied Petroleum Gas.
LSB
Least Significant Byte
M
Mega, the prefix for 1,048,576, or 2
20
, when used with byte to quantify data or
computer memory. Also 1000, as in MCF or 1000 Cubic Ft.
Manifold
The conduit of an appliance which supplies gas to the individual burners. Also,
a pipe to which two or more outlet pipes are connected.
Manifold Assembly
The Manifold Assembly is comprised of the Manifold Plate, Heater, Valves, and
various Cables to other major components. The Manifold Plate and Heater
maintain constant temperature for the GC Module and Columns. The Valves
control Stream processing, Carrier and Calibrations gases. The Cables
complete the information chain from the GC Module to the Analytical Processor
and the Digital Controller Assembly.
Man-Machine Interface
Software program that converts machine instructions and commands into a
user interface.
Manometer
A two-armed barometer.
Manual Reset
The switch in a limit controller that manually resets the controller after the limit
has been exceeded.
MasterLink
MasterLink is the name of the software program used to communicate with the
LevelMaster for purposes of doing setup, calibration, troubleshooting,
generating site files, monitoring levels and collecting data.
Mbytes/s
A unit for data transfer that means 1 million or 10
6
bytes/s.
Mcf
The quantity of natural gas occupying a volume of 1000 cubic feet at a
temperature of 60
°
Fahrenheit and at a pressure of 14.73 psia.
Mean Temperature
The average of the maximum and minimum temperature of a process
equilibrium.
Measurement Unit
Assembly
µ
FLO’s measurement and operational features are housed in this single unit
assembly. The main electronic board (
µ
FLO-195 Board), communication
connection, power, SP, DP and Temperature readings are all housed in this
unit.
Mega
Multiplier indicating that a quantity should be multiplied by 1,000,000.
Melting Point
The temperature at which a substance transforms from a solid phase to a liquid
phase.
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 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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