60
Calibration
Press
.
The sensor selection display is displayed.
4
The sensor should be calibrated before use or after cleaning.
Calibration details depend on a sensor. Refer to each sensor's instruction manual.
Caution
• Pressing
automatically retains the measurement value.
• Depending on the sensor to use, the displayed calibration items and operations
may vary.
For details, refer to the instruction manual for each sensor.
Item
Description
Refer to
ZERO Cal.
The sensor is immersed in distilled or deionized water
and the measurement value is adjusted to the reference
value (zero).
SPAN Cal.
The span is adjusted to the predetermined reference
value.
Sensor's
instruction
manual
1-Point Cal.
The sensor's measurement value is adjusted to the
predetermined 1-point reference value.
2-Point Cal.
The sensor's two measurement values are adjusted to
the predetermined two reference values.
Optional
Density
The sensor is immersed in liquid with certain density and
the measurement value is adjusted to the density.
Initialize
Calibration Value
The calibration value is reset to the factory default setting. P.62
Caution
If neither distilled water nor deionized water is
available, tap water without rust/turbidity can be
used instead.
Allow the sensor to acclimate to the water temperature for about
5 minutes, and check that there are no bubbles in the detection window.
Clean the sensor's main unit and detection window.
Immerse the sensor in distilled or deionized water.
3
2
1
6
Calibration
Calibration
u
Example: Zero calibration using turbidity checker
