LF 170
Indexes
129
ba54104e09
11/2010
9.2
Glossary
The glossary briefly explains the meaning of the specialist terms.
However, terms that should already be familiar to the target group are
not described here.
AutoRange
Name of the automatic selection of the measuring range.
Cell constant, k
Characteristic parameter of a conductivity measuring cell, depending
on the geometry.
Conductivity
Short form of the expression 'specific electrical conductivity'. It is a
measured value of the ability of a substance to conduct an electric
current. In water analysis, the electrical conductivity is a dimension for
the ionized substances in a solution.
Conductometry
Name of the conductivity measuring technique.
Measured parameter
The measured parameter is the physical variable determined by
measuring, e.g. conductivity or temperature.
Measured value
The measured value is the special value of a measured parameter to
be determined. It is given as a combination of the numerical value and
unit (e.g. 3 m; 0.5 s; 5.2 A; 373.15 K).
Measuring system
The measuring system comprises all the devices used for measuring,
e.g. meter and sensor. In addition, there is the cable and possibly an
amplifier, terminal strip and armature.
Reference
temperature
Fixed temperature value to compare temperature-dependent
measured values. For conductivity measurements, the measured
value is converted to a conductivity value at a reference temperature
of 20 °C or 25 °C.
Resolution
Smallest difference between two measured values that can be
displayed by a measuring instrument.
Salinity
The absolute salinity S
A
of seawater corresponds to the relationship of
the mass of dissolved salts to the mass of the solution (in g/kg). In
practice, this dimension cannot be measured directly. Therefore, the
practical salinity is used for oceanographic monitoring. It is determined
by measuring the electrical conductivity.
Salt content
General designation for the quantity of salt dissolved in water.
Temperature
coefficient
Value of the slope of a linear temperature function.
