Xylem YSI VARiON Plus 700 IQ H, Руководство по эксплуатации, Страница: 38 / 62

Measuring VARiON
® Plus
700 IQ H
38
ba76207e02 12/2020
5 Measuring
5.1 Measurement operation
Note the data given in section 9.2 A
PPLICATION CONDITIONS
, especially
the minimum immersion depth of the sensor (> 50 mm with mounted
protective hood).
5.2 Factors affecting the measured value
For measurement with the VARiON
® Plus
700 IQ H the following influ-
encing variables can be important, depending on the measured param-
eter:
WARNING
Chemical or biological hazard.
Contact with the sample can be harmful to the user.
Depending on the type of sample, suitable protective
measures must be taken (protective clothing, gog-
gles, etc.).
NOTICE
Greases, oils, certain tensides and similar substances
can shorten the operational lifetime of the electrodes.
Therefore, they should not be present in the test sample
(see section 3.2.1 E
FFECTS TO BE GENERALLY AVOIDED
).
If necessary, the CH Cleaning head can be used to keep
the sensor clean (see chapter 7 R
EPLACEMENT PARTS AND
ACCESSORIES
).
Measured parameter Influencing variable
Ammonium

pH value

Potassium ions
Nitrate

Chloride ions
The effects of influencing variables on measurement and
compensating actions are described in detail in the primer
I
ON SELECTIVE MEASUREMENT IN ONLINE ANALYSIS
.