YSI IQ SensorNet ViSolid Sensor 700 IQ - Manual (Page 44)

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What to do if ... ViSolid
®
700 IQ (SW)
Measured values too
low
Measured values too
high
– Signal averaging time too short
for low values of total suspended
solids
– Inhomogeneous measuring
medium
– Increase signal averaging
time
Cause Remedy
Cause Remedy
– Measurement window dirty – Clean the measurement
window (see section 5.2)
Cause Remedy
– There are bubbles of gas in the
medium in front of the measure-
ment windows
– Check the installation posi-
tion of the sensor (see sec-
tion 3.3 and section 3.4)
– Light scattering on the walls – Check the installation posi-
tion of the sensor (see sec-
tion 3.3 and section 3.4)
– If necessary, compensate
for any effects that cannot
be cleared by calibration
– Measurement window dirty – Clean the measurement
window (see section 5.2)