wtw Cond 3300i Operating Manual page 59

Cond 3300i/3400i
Adjusting
AutoRange
AutoRead
Calibration
Cell constant, k
Conductivity
Conductometry
Measured parameter
Measured value
Measuring system
Molality
Reference
temperature
Reset
Resistance
Resolution
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Glossary
To manipulate a measuring system so that the relevant value (e. g. the
displayed value) differs as little as possible from the correct value or
a value that is regarded as correct, or that the difference remains with-
in the tolerance.
Name of the automatic selection of the measuring range.
WTW name for a function to check the stability of the measured value.
Comparing the value from a measuring system (e. g. the displayed
value) to the correct value or a value that is regarded as correct. Of-
ten, this expression is also used when the measuring system is adjust-
ed at the same time (see adjusting).
Characteristic quantity of a conductivity measuring cell, depending on
the geometry.
Short form of the expression, specific electrical conductivity. It is a
measured value of the ability of a substance to conduct an electric cur-
rent. In water analysis, the electrical conductivity is a dimension for the
ionized substances in a solution.
Name of the conductivity measuring technique.
The measured parameter is the physical dimension determined by
measuring, e. g. pH, conductivity or D. O. concentration.
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).
The measuring system comprises all the devices used for measuring,
e. g. measuring instrument and probe. In addition, there is the cable
and possibly an amplifier, terminal strip and armature.
Molality is the quantity (in Mol) of a dissolved substance in 1000 g sol-
vent.
Fixed temperature value to compare temperature-dependent mea-
sured values. For conductivity measurements, the measured value is
converted to a conductivity value at a reference temperature of 20 °C
or 25 °C.
Restoring the original condition of all settings of a measuring system.
Short name for the specific electrolytic resistance. It corresponds to
the reciprocal value of the electrical conductivity.
Smallest difference between two measured values that can be dis-
played by a measuring instrument.
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