Hanna Instruments HI 4421 User Manual
Page 23
23
Calibration
Using DO standards
The meter can be calibrated in a single or multi-points (up to two points), using 2 DO standards (0.0%, 100%)
or using the custom standards.
The following options are available for calibration:
Standard Recognition
The user can choose between
Automatic
recognition (from 2 Hanna standards available) or
User Standard
.
• Use
or
to highlight the
Standard Recognition
option.
• Use
or
to choose from
Automatic
or
User
Standard
option
.
• Press
to confirm your selection or press
to
cancel operation.
Calibration Reminder
This option allows the user to set the calibration reminder as
Daily
,
Periodic
or
Disabled
.
To set the calibration reminder:
• Use
or
to highlight the
Calibration re-
minder
option.
• Press
to confirm your selection and then use
or
to choose the desired option
.
• Press
to confirm your selection or press
to
cancel operation.