Hanna Instruments HI 110 - Manual (Page 14)

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• To clear calibration parameters for all uncalibrated buffers starting
with current buffer, press and hold down CFM, then press CAL. If
this procedure is performed while calibrating in the first calibration
point, the instrument returns to measurement mode, else calibration
can be continued from the current point.
• Press RANGE (SEL for HI 110) to toggle
between pH buffer and temperature reading
(HI 110, HI 111).
Press RANGE to toggle between pH buffer,
buffer number and temperature reading
during calibration (HI 112, HI 113 only).
• Each time a buffer is confirmed, the new calibration parameters
replace the old calibration parameters of the coresponding buffer. If
current confirmed buffer has no correspondence in the existing stored
calibration and this is not full, (three buffers for HI 110, HI 111; five
buffers for HI 112, HI 113), the current buffer is added to the
existing stored calibration. If the existing stored calibration is full, the
instrument asks which buffer will be replaced by current buffer.
Press the ARROW keys to select another buffer to be replaced.
Press CFM to confirm the buffer that will be replaced.
Press CAL to leave calibration without replacing.
Note: If the replaced buffer is outside the ±0.2 pH window, around each of
the calibrated buffers, it is possible to select this buffer for next calibra-
tion during current calibration.
WORKING WITH CUSTOM BUFFERS
If at least one custom buffer was set in SETUP menu, it can be selected for
calibration by pressing the ARROW keys. The “BUFFER pH” tag will blink.
Press SET if you want to adjust the buffer value. The buffer value will start
blinking.
Use the ARROW keys to change the buffer value.
After about 5 seconds since you performed the last change, the buffer value is
updated. Press SET if you want to change it again.
Note: Custom buffer value can be adjusted in a ±1.00 pH window, around
the set value.
CFM
CAL
BUFFER pH
pH
BUF
CAL
BUFFER pH
pH