Hanna Instruments HI 2002, Instruction Manual, Page: 24 / 52

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BASIC VS STANDARD pH MODE
The “Standard” pH operation includes up to a 5‑point buffer calibration, use of custom buffers,
choice of displaying 0.001 pH resolution, use of the full diagnostic features of Calibration Check™
(that includes buffers used, probe condition, response time and messages indicating a contaminated
buffer 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 simplified 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 buffer
calibration from the following pH buffers: pH 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 offset, slope, buffers 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 differences between Standard and Basic modes are shown below.
Standard Basic*
Calibration 5 points including 2 custom buffers 3 points
Diagnostics
Cal Check™ Feature
Sensor Check™ Feature
Error messages
GLP
Basic error messages
GLP basic
OPERA
TIONAL GUIDE
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:
HI11310, HI12300
HI11311, HI12301
HI10530, HI10430
HI11310*
HI12300
*All sensors work in this mode, but diagnostic and all buffers will not be available.