Maintenance
Maintenance Schedule
Unlike traditional electrical chemical sensors, optical DO sensors require low maintenance.
There are no need for frequent solution filling and calibrations.
Maintenance task
Frequency
Sensor cleaning
Every 30 days
Sensor and sensor cap inspection
Every 30 days
Sensor cap replacement
Every one year
Calibration（if required of agency）
Calibration based on required schedule
Maintenance
1)
Clean the sensor surface
：
Wash the outer surface of sensor with tap water, if there is
still residue, using soft brush, for some stubborn dirt, household detergent can be
added in tap water to clean.
2)
Clean the cap outer surface
：
Remove the protective cover , flush the dirt on the light
window of the sensor with clean water, and finally put the cover on;If you need to
wipe it, please wipe it gently with a soft cloth and do not scratch it forcefully.
Otherwise, once the fluorescent film is scratched or scratched, the sensor will not
work properly
3)Clean the cap inner surface:
If water vapor or dust gets inside the fluorescent cap, the cleaning steps are as follows:
(1) Remove the fluorescent cap
(2) Rinse the inner surface of the fluorescent cap with tap water
(3) For dirt containing fat and oil, wash it in warm water with household detergent
(4) Rinse the inner surface of the fluorescent cap with deionized water
(5) Gently dry all surfaces with a clean flannelless cloth and place in a dry place to allow water
to completely evaporate
4)
Check the cable
：
inspect the sensor cable if there is damage.
5)
Store the cap
：
Regular electrode maintenance requires cap to be stored ina
protective cover with a damp sponge and checked and watered regularly, so as to
keep the fluorescent film in a moist state for a long time.If the sensor fluorescent cap
