YSI IQ S ENSOR N ET TriOxmatic 701 IQ - Manual (Page 24)

Maintenance, cleaning, disposal, and replacement TriOxmatic
®
701 IQ
5 - 2 ba76047e01 01/2012
5.2 Cleaning the sensor shaft and membrane
For normal operation (e.g. municipal wastewater), cleaning and
calibration are strongly recommended:
 if there is any pollution (according to visual check)
 if the measured values are suspected of being incorrect (usually too
low)
 if the measured value lies outside the range of precision required by
the user when the function check is carried out.
Cleaning agents
Cleaning
Caution
Acetic acid irritates the eyes and the skin. When handling acetic
acid, always wear protective gloves and protective goggles.
Contamination Cleaning agents
For sludge and loosely
adhering dirt, or biological
deposits Soft cloth or soft sponge, warm tap
water with detergent
Salt and / or lime deposits Acetic acid (volume percentage =
20 %),
soft cloth or soft sponge
1 Pull the sensor out of the sample.
2 Get rid of any coarse contamination on the sensor (e.g. brush
it off in a bucket of tap water, wash it down with a hose or wash
it off with a cloth).
3 Unscrew the protective hood from the sensor.