TotalFlow uFLO, User Manual, Page: 130 / 132

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Term Definition
Wellhead The assembly of fittings, valves, and controls located at the surface and
connected to the flow lines, tubing, and
Casing of the well so as to control
the flow from the reservoir.
WINCCU Windows Central Collection Unit. Windows version of software to process,
archive and manipulate data collected from the Totalflow products.
Witness In the field, where hydrocarbons are changing hands and actual cash
register transactions being performed, it is not uncommon for one party or
the other to request / require a representative or company employee be
present during calibrations and or routine maintenance. Often this
arrangement is contractually linked.
Wobbe Index Calculated from the energy content, or a higher heating value of the gas,
and the relative density of the gas (Btu/RD
1/2
).
Working Voltage The highest voltage that should be applied to a product in normal use,
normally well under the breakdown voltage for safety margin. See also
Breakdown Voltage.
World Wide Web An Internet service facilitating access to electronic information - also
known as the Web, WWW, or W3.
X Series Extendable equipment series featuring technology that is expandable and
flexible for ever changing needs.
XFC See Flow Computer, X Series.
XFC-2100767 Board The main electronic board used in X Series flow computers. The XFC-
2100767 Board mounts on the inside of the enclosure’s front door.
XMV External Multivariable Transducer.
XRC See Remote Controller, X Series.
Y Expansion factor
Zero Gas Gas at atmospheric pressure.