Xylem WTW Multi 3430, Руководство по эксплуатации

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Multi 3430
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This chapter provides additional information and orientation aids.
Specialist terms The glossary briefly explains the meaning of the specialist terms. How-
ever, terms that should already be familiar to the target group are not
described here.
Index The index will help you to find the topics that you are looking for.
Glossary
Adjusting 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.
Asymmetry see zero point
AutoRange Name of the automatic selection of the measuring range.
Calibration 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).
D.O. partial pressure Pressure caused by the oxygen in a gas mixture or liquid.
Electromotive force of
an electrode
The electromotive force U of the combination electrode is the measur-
able electromotive force of an electrode in a solution. It equals the
sum of all the galvanic voltages of the combination electrode. Its de-
pendency on the pH results in the electrode function, which is charac-
terized by the parameters, slope and zero point.
Junction The junction is a porous body in the housing wall of reference elec-
trodes or electrolyte bridges. It arranges the electrical contact be-
tween two solutions and makes the electrolyte exchange more
difficult. The expression, junction, is also used for ground or junction-
less transitions.
Measured parameter The measured parameter is the physical dimension determined by
measuring, e. g. pH, conductivity or D.O. concentration.
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).
ORP voltage The ORP is caused by oxidizing or reducing substances dissolved in
water if these substances become effective on an electrode surface
(e. g. a gold or platinum surface).