Hach-Lange SONATAX sc - Manual (Page 22)

22
Installation
Fade out this disruption in SENSOR SETUP > CALIBRATE > ADV.
SETTINGS > FADE-OUT in the range of 0.5–0.8 m. The sensor
now ignores all signals in this range and finds the correct
measurement value at 2.13 m.
Example 6: Application with clear separation layer and a sludge
cloud above the separation layer.
In this application, the separation layer should be measured, the
sludge cloud should be ignored (for example pre-thickener).
No change of the default setting. The automatic threshold detects
the separation layer; the echo of the sludge cloud is lower than the
echo of the sludge cloud.
The image shows the same profile as before, but with another
threshold and measurement value.
In this application, the sludge cloud should be measured as an
early warning system (for example sludge drift in the final
clarification tank).
Change of the automatic threshold SENSOR SETUP >
CALIBRATE > ADV. SETTINGS > THRESHOLD AUTO to 25 %.
The automatic threshold detects the sludge cloud.
The optionally available SLUDGE DOCTOR diagnostic software
can be helpful for the setting of the special probe parameters (refer
to
7.2 Accessories on page 31 ). The software enables the
representation and saving of all graphic profiles of the SONATAX sc
in a defined time interval (5 minutes–2 hours).
The software also shows and saves all important measurement and
configuration parameters, such as the reflex list, measurement
values, limit values and all advanced settings, such as response
time, frequency, amplitude, angle and temperature.
Take further information from the SLUDGE DOCTOR user manual
DOC013.98.90411
.