Hach-Lange SONATAX sc - Manual (Page 16)

16
Installation
If no measurement location without disruptive reflexes can be
found, select the probe menu SENSOR SETUP > CALIBRATE and
trigger a measurement in the PROFILE LIST menu item.
• If there are increased values at the depth of the disruptive
reflexes in the PROFILE LIST which influence the
measurement value, another measurement location must be
selected. Sometimes it is sufficient to move the probe by a few
centimeters (refer to
Figure 9 , right).
• If the reflections do not disrupt the measurement value, this can
be a suitable measurement location (refer to
Figure 9 , left).
3. Then assemble the tank edge attachment there and install the
probe.
Note: The probe should be installed approximately 20 cm (7.9 in.) deep
at the installation location (somewhat more than the entire probe head) to
make sure that it remains immersed during the entire measurement
operation.
4. In the CALIBRATE probe menu, enter the actual plunger depth
(Item A, Figure 10 ) in the PLUNGERDEPTH menu item.
5. Trigger after approximately 2 minutes another measurement of
the reflex list (to adjust the temperature sensor to the water
temperature) (also refer to
REFLEXLIST on page 24 ).
6. In the CALIBRATE probe menu, enter the recorded value of the
tank depth (Item C, Figure 10 ) in the TANK DEPTH menu item.
Important note: The shown value of the tank depth is calculated
from information shown:

Tank depth C = plunger depth A + measured distance to floor B

This calculation is performed internally and leads to incorrect
results if the plunger depth is entered incorrectly.
Figure 9 Determine measurement location