YSI IFL 700 IQ - Manual (Page 25)

IFL 70x IQ Measuring
4 - 1 ba76129e01 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.