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APT4000PH
pH electrode
system
Glossary
A pH electrode system consists of a glass
and a reference electrode. If they are com-
bined in one body, they are referred to as
combination electrode.
Sensocheck
Sensocheck continuously monitors the glass
and reference electrodes. The resulting
information is indicated by the Sensoface
smileys. Sensocheck can be switched off.
Response time
Time from the start of a calibration step to
the stabilization of the electrode potential.
One-point
calibration
Calibration with which only the asymmetry
potential (zero point) is taken into account.
The previous slope value is retained. Only
one buffer solution is required for a one-
point calibration.
Mode code
Preset four-digit number to select certain
modes.
MEREDIAN
MEREDIAN combination pH/ORP electrodes
consist of a glass or metallic measuring
electrode, a reference electrode, and a tem-
perature probe. They include a permanent
reference junction and gel fill for mainte-
nance-free operation.
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Zero point
See asymmetry potential
Zero
adjustment
Basic adjustment of the DURAFET electrode
to ensure reliable Sensoface information.
Sensoface
Provides information on the electrode con-
dition. The zero point, slope, and response
time are evaluated. In addition, the
Sensocheck information is indicated.
Slope
See Electrode slope
Two-point
calibration
Calibration with which the electrode asym-
metry potential (zero point) and slope are
determined. Two buffer solutions are
required for two-point calibration.
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