TotalFlow XRC6490, Руководство пользователя

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B-44
TERM DEFINITION
Temperature, Flowing Temperature of the flowing fluid. Usually gas and measured by an RTD.
Terminal Mode Man-Machine interface tool used as and engineering interface with equipment.
Termination Placement of a connector on a cable.
Termination Panel A circuit board with screw terminals or other connector system that allows
convenient connection of field signals to a data acquisition or communication
system.
TF.NET Totalflow network used to access iVision/web data.
TFIO Module Totalflow Input/Output module (i.e. quad AO)
Thermal Conductivity
Detector Universal detector that shows a response to all compounds. An electrical
component that changes resistance based on the components ability to
conduct heat. In chromatography, two TCDs are used, 1)as a reference
detector and 2) as the sensor detector. The reference detector is exposed to
only the carrier gas and the Sensor detector is exposed to the sample.
Thermistor A temperature-sensing element composed of sintered semiconductor material
which exhibits a large change in resistance proportional to a small change in
temperature. Thermistors usually have negative temperature coefficients.
Thermistor Bead See Thermal Conductivity Detector.
Thermocouple A temperature sensor created by joining two dissimilar metals. The junction
produces a small voltage as a function of the temperature.
Thermowell A closed-end tube designed to protect temperature sensors from harsh
environments, high pressure, and flows. They can be installed into a system by
pipe thread or welded flange and are usually made of corrosion-resistant metal
or ceramic material depending upon the application.
Therms Master Totalflow application for Gas Analyzer.
Tolerance The allowable percentage variation of any component from that stated on its
body.
Totalflow Product line of ABB Inc. Maker and distributor of the XSeries Flow Computers
(XFC) and Remote Controllers (XRC).
TotalSonic MMI TotalSonic’s Man Machine Interface software program. May also be called
MEPAFLOW 600.
Transducer A device for converting energy from one form to another, specifically the
measurement of pressure differential in natural gas gate stations. I.e. Pressure
to voltage or current.
Transfer Rate The rate, measured in bytes/s, at which data is moved from source to
destination after software initialization and set up operations; the maximum rate
at which the hardware can operate.
Transient An abrupt change in voltage, of short duration (e.g. a brief pulse caused by the
operation of a switch).
Transistor A three leaded device (Collector, Base, Emitter) used for amplifying or
switching. Also called a bi-polar transistor to distinguish it from Field Effect
Transistor etc.
Transmitter A device that converts audio, video or coded signals into modulated radio
frequency signals which can be propagated by electromagnetic waves (radio
waves).
Tranzorb Transient Voltage Suppression device.
TRB Tank Request Block Editor. When requesting storage space after adding a
LevelMaster application, the file is saved as a *.trb file.
Tube Cylinder for transporting or storing liquids: any long hollow cylinder used to
transport or store liquids.