Xylem PH3210 FIELD PH METER - Manual (Page 65)

pH 3210 Lists
65 ba75793e02 12/2008
8 Lists
This chapter provides additional information and orientation aids.
Specialist terms 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.
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
within 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.
Often, this expression is also used when the measuring system is
adjusted at the same time (see adjusting).
Electromotive force of
a combination
electrode
The electromotive force U of the combination electrode is the
measurable electromotive force of a combination electrode in a
solution. It equals the sum of all the galvanic voltages of the
combination electrode. Its dependency on the pH results in the
electrode function, which is characterized by the parameters, slope
and zero point.
Junction The junction is a porous body in the housing wall of reference
electrodes or electrolyte bridges. It arranges the electrical contact
between 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).