Hanna Instruments HI 4221 User Manual
Page 21
21
To set one of the Temperature options:
• Press
while in
pH Measure
mode.
• Press
.
• Use
or
to select the Temperature option.
• Press
and use
or
to highlight the
desired Temperature option you wish to modify.
• Press
and use
or
to highlight the
desired option (for Temperature Source & Unit options) or use
or
to adjust the temperature value between
the displayed limits (for Manual Temperature option).
• Press
to confirm your selection (for Temperature Source &
Unit options) or press
to save the current value (for Manual
Temperature option). Otherwise, press
to cancel operation.
Calibration
This option allows the user to set all the data regarding the pH calibration process.
Buffer Entry Type
Three entry modes for the pH buffers used for calibration are available:
Automatic
–
the instrument automatically selects the closest buffer to the measured pH value from the edit buffer group.
Semiautomatic
–
the instrument automatically selects the closest buffers to the measured pH value from all
available buffers and you can choose the one used.
Manual Selection
–
the desired pH buffer is manually selected from all available buffers, regardless of measured value.
To set the Buffer Entry Type:
• Press
while in
pH Measure
mode.
• Press
.
• Use
or
to select the Calibration option.
• Press
and use
or
to highlight the
Buffer Entry Type option.
• Press
and use
or
to highlight the
desired option.
• Press
to confirm your selection or press
to
cancel operation.