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IFL 70x IQ Measuring
4 - 1 ba75990e01 10/2012
4 Measuring
Factors affecting the
measured value
The following factors have an impact on the measured value:
 The environmental conditions at the measuring location deviate too
much from the sensor settings (
Immersion depth , Water depth ,
Temperature )
 The distance between the ultrasonic transducer and the sludge level
is too small (dead zone, see also section 3.3.3)
 Moving fixtures cross the measuring cone or the installation location
of the sensor

Foreign bodies or air bubbles are in front of or on the
ultrasonic
transducer.
1 Submerse the sensor in the sample.
2 Read the measured value on the terminal of the IQ S
ENSOR
N
ET
system.