Xylem WTW NiCaVis 705 IQ TS, Руководство по эксплуатации

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NiCaVis 705 IQ TS
What to do if...
45 ba77189e01 05/2017
Drifting measured
values
Display of
OFL
Measured values
fluctuating heavily
Measured values
too low or too high
Cause Remedy
– Cleaning efficiency too low - mea
-
surement windows becoming
more and more contaminated
– Clean the measurement windows
(section 5.2.4)
– Use other cleaning method
– Select different measurement loca
-
tion
– Set longer cleaning duration
– Set more frequent cleaning proce
-
dures
– Install optional compressed air
cleaning device
– Failure of the optional com
-
pressed air cleaning system
– Clean the measurement windows
(section 5.2.4)
– Check all components of the com
-
pressed air cleaning system (com
-
pressor, compressed air line,
sensor, rinsing openings)
– Substantial change of test sample
(sample matrix)
– Carry out new user calibration
Cause Remedy
– Measuring range exceeded – Check process
– Foreign matter in the measuring
gap
– Clean the measuring gap (section
5.2.3)
– Erroneous user calibration – Repeat user calibration. Make sure
the samples for comparison are rep
-
resentative.
Cause Remedy
– Gas bubbles in front of the mea
-
surement windows
– Check the position within the pro
-
cess and the installation position
Cause Remedy
– Gas bubbles in front of the mea
-
surement windows
– Check the installation position of the
sensor
– Measurement windows dirty – Clean the measurement windows
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