wtw pH 540 GLP Bedienungsanleitung Seite 36

Functions
Calibration procedure
pH measurement
Electrode control:
Electrode data outside the
required ranges (sensor condition
"poor")
Calibration interval exceeded
AutoCheck interval
exceeded
Folgende Funktionen des PROG-Menüs
(Konfigurationsmodus) sind im GLP-Modus
gesperrt (Einstellungsänderung erst nach Ausschalten
der GLP-Funktion):
- Standardabweichung σ der pH-Messung vorgeben
- Rührersteuerung einstellen
- Puffersatz zusammenstellen
- Grenzwerte einstellen
- Daten-Ausgabe über RS 232 vorgeben
(Druckerfunktionen)
- Speicher löschen
- Analogausgang wählen
- Kalibrier-Intervall vorgeben
- Gerätetest (AutoCheck) - Intervall vorgeben
- Datumseingabe
- Uhrzeiteingabe
- Verschiebespannung für mV-Messung eingeben
36
pH-Messen im GLP-Modus
pH measurement in GLP mode
Normal operation
without GLP
selectable
Mode selectable:
- continuous ( σ OFF),
- with drift control AR
with manual termination
in standard mode ( σ OFF)
without manual termination
in DIN mode ( σ ≤ 0.05,
0.02, 0.01)
Electrode symbol "empty"
Warning
(Flashing status indication
of current calibration
procedure)
Warning
(Flashing status indication)
The following functions of the PROG menu
(configuration mode) are blocked in the GLP-mode
(alterations of the setting only after the GLP function
has been switched off):
- Setting of standard deviation σ of the pH
measurement
- Setting of stirrer control
- Selection of buffer combination
- Setting of limit values
- Stipulation of data output via RS 232 (printing
functions)
- Clearance of memory
- Selection of analog output
- Setting of calibration interval
- Setting of interval for instrument check (AutoCheck)
- Setting of date
- Setting of time of day
- Setting of offset voltage for mV measurement.
GLP mode
last selected procedure
and buffer combination
"frozen"
only with drift control AR
without manual termination
Error message and
blocking of measurement
Warning 1 h
(measured values + status
indication are flashing)
afterwards
Blocking of measurement
Warning 1 h
(measured values + status
indication are flashing)
afterwards
Blocking of measurement
BA11102/05.00/Pla/pH540GLP-4