Glossary - Siemens SITRANS F Operating Instruction

Glossary

ASIC
Application-Specific Integrated Circuit is an integrated circuit (IC) customized for a particular
use, rather than intended for general-purpose use.
CNG
Compressed natural gas, or CNG, is natural gas under pressure which remains clear,
odorless, and non-corrosive. Vehicles can use natural gas as either a liquid or a gas.
Compressed natural gas
CNG
→
Coriolis
The Coriolis effect is an apparent deflection of moving objects from a straight path when they
are viewed from a rotating frame of reference. The effect is named after Gaspard-Gustave
Coriolis, a French scientist who described it in 1835. The Coriolis effect is caused by the
Coriolis force, which appears in the equation of motion of an object in a rotating frame of
reference.
DFT
The discrete Fourier transform (DFT) is one of the specific forms of Fourier analysis. As
such, it transforms one function into another, which is called the frequency domain
representation, or simply the DFT, of the original function (which is often a function in the
time domain). The DFT evaluates enough frequency components to reconstruct the finite
segment that was analyzed. The DFT is thus a transform for Fourier analysis of finite-domain
discrete-time functions.
EMC
Electromagnetic compatibility (EMC) is the branch of electrical sciences which studies the
unintentional generation, propagation and reception of electromagnetic energy with
reference to the unwanted effects (Electromagnetic Interference, or EMI) that such energy
may induce. The goal of EMC is the correct operation, in the same electromagnetic
environment, of different equipment which use electromagnetic phenomena, and the
avoidance of any interference effects.
SITRANS FCS200
Operating Instructions, 02/2011, A5E02508199-01
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