Xylem IQ SensorNet ViSolid 700 IQ (SW) - Manual (Page 39)

ViSolid
®
700 IQ (SW) Maintenance, cleaning, accessories
5 - 1 ba76040e02 07/2013
5 Maintenance, cleaning, accessories
5.1 General information
WARNING
Contact with the sample can be dangerous for the user!
Depending on the type of sample, suitable protective measures
must be taken (protective clothing, protective goggles, etc.).
The ViSolid
®
700 IQ (SW) sensor does not usually require any
maintenance. The continuously running ultrasound system prevents
the accumulation of pollution right from the start.
Note
If the sensor remains in the sample for any length of time when the
system is not operating, we recommend to clean the shaft and
measurement windows.
5.2 Cleaning the sensor shaft and measurement windows
During normal operation (e.g. municipal wastewater), cleaning is
recommended:
 if there is any pollution (according to visual check)
 if the sensor was not in operation for a lengthy period of time but was
immersed in the measuring medium
 if the measured values are suspected of being incorrect (usually too
low)
 if the SensCheck message appears in the log book (when using
samples of matrix type 1)
 for regular cleaning (when using samples of matrix type 2)
 if there is any suspicion that the measurement window is polluted,
e.g. by dried on dirt during operation in the open air
Cleaning agents
CAUTION
Acetic acid irritates the eyes and the skin. When handling acetic
acid, always wear protective gloves and protective goggles.
Contamination Cleaning agents
Sludge and loosely adhering dirt
or biological films Soft cloth or soft brush, warm tap
water with detergent
Salt and / or lime deposits Acetic acid (volume percentage
= 20 %), soft cloth or soft sponge