YSI IQ SensorNet ViSolid Sensor 700 IQ - Manual (Page 43)

ViSolid
®
700 IQ (SW) What to do if ...
ba76040e04 05/2014 6 - 1
6 What to do if ...
Mechanical damage to
the sensor
Display always shows
"0"
TSS display does not
correspond to the TSS
value according to the
laboratory
determination
Display of OFL
Display of "----"
Display of main
parameter
TSS: "----"
Secondary parameter
SiO2: "OFL"
Measured value
fluctuating heavily
Cause Remedy
– Return the sensor
Cause Remedy
– First calibration value pair
incomplete
– Enter the TSS value for the
first calibration value pair
Cause Remedy
– Correction factor incorrectly set – Set up the correction factor
again: Correction factor =
TSS value (laboratory) /
TSS value (display)
Cause Remedy
– Measuring range exceeded
– First calibration value pair
incomplete
– Two identical SiO2 values
entered one after the other
– See log book
– Enter the SiO2 value for the
first calibration value pair
– Enter the value pairs in
descending order
Cause Remedy
– Measured value invalid
– Incorrect calibration value
entered
– See log book
– Correct the calibration val-
ues and enter them again
Cause Remedy
– The optical measuring range for
SiO2 is exceeded. The display of
a valid TSS measured value is
not possible.
– See log book
(message code EA6243,
see section 8.1.1)
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)