B-26
TERM DEFINITION
ID
Identification Number. You must assign an ID to the unit. Units are
communicated to by this ID number, therefore the ID assigned in the software
must agree with the hardware.
IEC
International Electrotechnical Commission. Developers of the IEC-61131-3
standard. Programming Language used by Totalflow for user applications in
XSeries equipment.
IECE
x
The IEC scheme for certification to standards relating to equipment for use in
explosive atmospheres.
IEEE
Institute of Electrical and Electronics Engineers
IIC
Inter-Integrated Circuit. Also see I
2
C.
IL Instruction
List
(IEC
supported programming language)
Impedance
The total opposition to electrical flow (resistive plus reactive).
IMV
See Integral Multivariable Transducer.
Inch of Mercury
A pressure unit representing the pressure required to support a column of
mercury one inch high at a specified temperature; 2.036 inches of mercury (at
32 degrees F and standard gravity of 32.174 ft/sec2) is equal to a gauge
pressure of one pound per square inch.
Inch of Water
A pressure unit representing the pressure required to support a column of water
one inch high. Usually reported as inches W.C. (water column) at a specified
temperature; 27.707 inches of water (at 60o and standard gravity of 32.174
ft/sec2) is equal to a gauge pressure of one pound per square inch.
Industry Canada
Canadian Certification.
Inerts
Elements or compounds not acted upon chemically by the surrounding
environment. Nitrogen and carbon dioxide are examples of inert components in
natural gas. Inerts dilute the natural gas and since they do not burn or
combust, have no heating value.
Initialization File
Generic file used to support the display of Totalflow application data in
PCCU32.
Input
That part of a circuit that accepts a signal for processing.
Input Impedance
The resistance measured across the excitation terminals of a transducer.
Input Sense
To examine or determine the status of the input.
Input/Output
The transfer of data to/from a computer system involving communications
channels, operator interface devices, and/or data acquisition and control
interfaces.
Instantiate
Starting an instance of an object.
Instrument Manifold
Manifold type used when XFC is mounted directly on the Orifice.
Insulator Any
material that resists the flow of electrical current.
Integral Multivariable
Transducer
A Multivariable Transducer that is an integral part of the flow computer,
measuring DP and SP. This refers only to the transducer portion of the device
and makes no assumption whether or not the circuitry is located as part of the
unit, or if the circuitry is located on the Mother Board and attached via wiring.
Also see Multivariable Transducer.
Integrated Circuit
A circuit component consisting of a piece of semiconductor material containing
up to thousands of transistor and diodes. A chip.
Integrating ADC
An ADC whose output code represents the average value of the input voltage
over a given time interval.
Interface (computer)
Usually refers to the hardware that provides communication between various
items of equipment.
Interface (liquid)
The area between two liquids that are not easily mixed, i.e. oil and water.
Summary of Contents for XRC6490
Page 1: ...2100802 001 AB TOTALFLOW XSeries Remote Controller User s Manual ...
Page 6: ...iv B B Bl lla a an n nk k k P P Pa a ag g ge e e ...
Page 10: ...viii B B Bl lla a an n nk k k P P Pa a ag g ge e e ...
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 ...
Page 88: ...4 14 B B Bl lla a an n nk k k P P Pa a ag g ge e e ...
Page 112: ...5 24 12V Communication Supply Voltage Test Cont Figure 5 9 XRC 195 Communication Wiring ...
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Page 340: ...B 48 B B Bl lla a an n nk k k P P Pa a ag g ge e e ...
Page 342: ...C 2 B B Bl lla a an n nk k k P P Pa a ag g ge e e ...
