TotalFlow XRC6490, Руководство пользователя

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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.