Hanna Instruments HI 2216 - Manual (Page 13)

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Clear calibration parameters and proceed with calibration
from the current calibration point. The instrument will keep
all confirmed values during current calibration.
• To clear calibration parameters for all uncalibrated buffers
starting with current buffer, press CLR. The calibration will
continue from the current point. If
this procedure is performed while cali-
brating in the first calibration point, the
instrument returns to measurement
mode.
• Press RANGE to toggle between pH buffer, calibration
buffer number and temperature reading.
• Each time a buffer is confirmed, the new calibration data
replaces the old data for the coresponding buffer. If current
buffer has no previous data stored and the calibration is not
full (five buffers), the current buffer is added to the existing
calibration. If the existing calibration is full, the instrument
asks which buffer to replace.
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 calibration during current
calibration.
WORKING WITH CUSTOM BUFFERS
If a custom buffer was set in SETUP menu, it can be selected during
calibration by pressing the
ARROW keys. The “BUFFER pH” tag will
blink.
Press
SETUP if you want to adjust the buffer value. The buffer value will
start blinking.
Use the ARROW keys to change the buffer value.
After 5 seconds, the buffer value is updated. Press SETUP if you want to
change it again.
Note: Custom buffer value can be adjusted in a ±1.00 pH window,
around the set value.