Hanna Instruments HI 2221 - Manual (Page 16)

16
When using an appropriate HANNA P Type BNC electrode with pin,
HI 2221 and HI 2223 will assess electrode condition and response time
during each calibration, the calibration status is displayed for the rest
of the day.
The response gauge is a function of the stabilization time between the
first and second calibration buffers. These gauges reflect electrode
performance and should be expected to slowly decrease over the life of
the electrode.
The condition gauge show the electrode’s condition at the time of
calibration.
For a continuous display of electrode condition and response, daily
calibration is necessary. This information can also be viewed in the GLP
data.
If the instrument is not calibrated, the calibration history was deleted,
or it has been calibrated only at one point, the electrode condition and
the electrode response gauges will be empty.
When the instrument cannot evaluate the electrode response, the
response gauge will be empty (pH 1.68 or pH 12.45 were used).
If the electrode is in a very poor condition the first condition segment will
blink.
If electrode response is very slow the first response segment will blink.
SLOW FAST POOR GOOD
SLOW FAST POOR GOOD
ELECTRODE CONDITION & ELECTRODE CONDITION & ELECTRODE CONDITION & ELECTRODE CONDITION & ELECTRODE CONDITION &
ELECTRODE RESPONSE TIME ELECTRODE RESPONSE TIME ELECTRODE RESPONSE TIME ELECTRODE RESPONSE TIME ELECTRODE RESPONSE TIME