35
Temperature Source
If using a temperature probe, sample temperature will be displayed with the “
ATC
” indicator displayed on the
LCD. For
HI 5222
only, the ATC option can be selected from Channel 1 or Channel 2. If no temperature probe is
detected, a Manually set value will be displayed (and logged) with the measurement.
Temperature Unit
Select the desired temperature unit (Celsius, Fahrenheit or Kelvin degrees) and the Meter will automatically
convert to the selected unit.
Manual Temperature
If no temperature probe is connected, the desired temperature can be manually entered. The default setting
is 25 °C.
Calibration
(Relative mV only)
Calibration Reminder
This option allows the user to select a calibration reminder schedule if desired.
See pH Setup section > Calibration Reminder section for option access details.
Set Reminder Period
See pH Setup section > Set Reminder Period section.
Clear Calibration
This feature deletes the Relative mV calibration for the selected channel.
• Press
while in Rel mV mode.
• Press
then use
or
to access Calibration option.
• Press
and use
or
to highlight Clear Calibration option.
• Press
to clear calibration. A pop-up menu will be displayed asking for confirmation (when a
calibration is available).
• Press
to confirm or press
to escape without saving and return to the Calibration options.
Sample ID
- See pH Setup section.
Stability Criteria
- See pH Setup section.
Reading Mode
- See pH Setup section.
Log
- See Logging section, or pH Setup section.
Alarm
- See pH Setup section.
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• If using manual temperature, after selecting the standard buffer, press
.
A pop-up menu
will be displayed on the LCD in which the temperature value can be adjusted using
or
. Press
to save the new temperature value.
• If using
Custom buffers
, press
after
buffer has been accepted to change actual buffer
conditions. A pop-up menu will be displayed on the
LCD in which the custom buffer and the temperature
value (MTC) can be adjusted by pressing
and then
or
keys. Press
to save the modified value and then
/
to select next/previous value to be adjusted.
• If the
Automatic buffer
entry type has been
selected for the calibration procedure, the instrument
will automatically select the closest buffer to the
measured pH value from the edit buffer group (see pH Setup for details).
• If the
Semiautomatic buffer
entry type has been selected for the calibration procedure, the
instrument will display only the closest buffers to the measured pH value from all the available
buffers and the user must select with
or
the buffer being used.
CALIBRATION MESSAGES
• Move sensor to next buffer or check buffer:
this message appears when the difference between the pH
reading and the value of the selected calibration buffer is significant. If this message is displayed, check
if you have selected the appropriate calibration buffer.
•
Wrong buffer temperature:
this message appears if the buffer temperature is out of the defined buffer
temperature range.
•
Clean the electrode or check the buffer. Press
to update calibration:
this message alerts
the user that some dirt or deposits could be on the electrode. Refer to the electrode Cleaning Procedure.
•
Slope too low. Please check the buffer / Slope too high. Please check the buffer:
these messages
appear if the current slope is under 80 % or over 110 % of default slope. Recalibrate the instrument
using fresh buffers.
•
Slope too low. Press
to clear old calibration / Slope too high. Press
to clear old
calibration:
verify the correct buffer has been selected and poured.
