YSI VisoTurb 700 IQ - Manual (Page 33)

VisoTurb
®
700 IQ (SW) Maintenance, cleaning, accessories
5 - 1 ba76039e01 01/2012
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 VisoTurb
®
700 IQ (SW) sensor does not usually require any
maintenance. The continuously running ultrasound system prevents
the accumulation of pollution in almost all cases.
Note
We recommend cleaning the shaft and the sapphire disc if the sensor
has remained in the sample in a non-operative condition for any lengthy
period of time.
5.2 Cleaning the sensor shaft and sapphire disc
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
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