What To Do If - wtw IQ SENSOR NET NiCaVis 705 IQ NI Operating Manual

NiCaVis 70x IQ NI
"----" display
(invalid measured value)
Implausible measured
values
ba75988e01 11/2012
7

What to do if...

Cause
– User calibration values
entered incorrectly
Sensor check (H2O dest.)
*
Zero adjustment
*
Sensor check (standard)
*
defective
Zero adjustment
– still errone-
ous after several trials
– Unknown
Cause
– Erroneous user calibration
– Substantial change of test
sample (sample matrix)
– Measurement windows dirty
– Sensor setting wrong
– Optical system maladjusted,
e. g. due to inadmissible
mechanical shock
Remedy
– Correct the entry and enter
once again (section 4.3.2)
Repeat
Sensor check (H2O dest.)
or *
Zero adjustment
or *
Sensor check (standard)
*
Check conditions, especially
cleanliness (section 4.3.3)
– Contact WTW
– See log book
Remedy
– Repeat user calibration. Make
sure the samples for compari-
son are representative.
– Carry out new user calibration
– Clean the measurement win-
dows
– Check and, if necessary, cor-
rect the
suring location
– Carry out new user calibration
– Carry out
Sensor check (H2O dest.)
*
Zero adjustment
*
Sensor check (standard)
*
What to do if...
or
or
.
Measuring mode Mea
,
sensor settings
or
or
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