User Guide

21
GLP AND RS232
All the GLP data can be retrieved (if the electrode is connected) from
a PC through the RS232 communication feature. The calibration data
are transferred to the PC along with measurement data (see "Data
transfer to PC" paragraph).
LAST CALIBRATION DATA
Last calibration data are stored automatically after a successful
calibration and they can be displayed by pressing the GLP key.
to view pH calibration data
• Press ALT and GLP when the meter displays pH reading.
• The LCD will then display the last pH calibration date.
• Press RANGE to scan remaining data, in the following order:
last calibration time
electrode offset value in mV ("OFF" appears in the lower LCD)
electrode slope in mV/pH ("SLP" appears in the lower LCD)
first point calibration buffer
second point calibration buffer (only if a 2-point calibration has
been performed).
If calibration was performed with an old or dead probe, the
message "Old probe" or "Dead probe" will scroll on LCD.
• The meter will then return to normal operational mode. Press ALT
and GLP to escape before viewing all the data.
to view mV calibration data (HI98150 only)
• Press ALT and GLP when the meter displays mV reading.
• The LCD will then display the last mV calibration date.
• Press RANGE to scan remaining data, in the following order:
last calibration time
first calibration point
second calibration point
third calibration point (only if a 3-point calibration has been
performed).
• The meter will then return to normal operational mode. Press ALT
and GLP to escape before viewing all the data.