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Operational Guide 20
Basic vs
Standard
pH Mode
For optimum pH measurements, follow these steps:
1.
Understand the benefi ts and features of Standard and Basic Operation.
2. Set up edge pH ® meter by confi guring preferences.
3. Calibration
4. Measurement
The “Standard” pH operation includes up to a 5-point buff er calibration, use
of custom buff ers, choice of displaying 0.001 pH resolution, use of the full
diagnostic features of Calibration Check™ (that includes buff ers used, probe
condition, response time and messages indicating a contaminated buff er or pH
sensor requiring maintenance during calibration). Additional Sensor Check™
indicators are available if using HI11311 or HI12301 pH electrodes. These
include a continuous diagnostic to detect if the electrode is broken and at the
time of calibration, a diagnostic to indicate the reference junction has been
compromised or fouled by sample contamination. The Standard pH operation
also includes full logging capability including Interval, Manual log on demand
and Manual log on stability.
“Basic” pH operation provides a simplifi ed SETUP menu; there are no decisions
to make regarding the pH measurement itself. The meter will display 0.01 pH
resolution and permit a 3-point buff er calibration from the following pH buff ers;
4.01, 6.86, 7.01, 9.18 or 10.01. Calibration Check™ and Sensor Check™ features
are limited to messages during calibration. Calibration reminders are also not
available. The GLP will still provide off set, slope, buff ers used and a calibration
date. The Basic pH operation includes Manual log on demand and Manual log on
stability (medium setting).
Note
: When changing from Standard to Basic operation in SETUP, previous
calibration data will be cleared. A prompt will force the user to facilitate this.
Major diff erences between Standard and Basic modes are shown below.
Standard Basic*
Calibration
5 points including 2 custom
buff ers
3 points
Diagnostics
Cal Check™ Feature
Sensor Check™ Feature
Error messages
GLP
Basic error messages
GLP basic
Log types
Manual Log on demand
Manual Log on stability
(Fast, Medium, Accurate)
Interval Logging
Manual Log on demand
Manual Log on stability
(Medium)
Recommended pH electrodes:
HI 11310, HI 12300
HI 11311, HI 12301
HI 10530, HI 10430
HI 11310*
HI 12300
* All Sensors work in this mode, but diagnostic and all buff ers will not be
available.
Operational
Guide