Commissioning
14
Function check in
air-saturated water
In the case of air temperatures under 5 °C do not perform
the function check in air but in air-saturated water that has a
higher temperature. You obtain air-saturated water by
pouring water several times in and out of two vessels so that
it sparkles.
Then immserse the probe in a vessel with air-saturated
water and perform the function check as described above.
3.7
Cleaning with normal operation
(e.g. domestic sewage)
Cleaning and calibrating is required:
approx. every 4 to 6 weeks
if the measured values are too low
Thoroughly rinse with deionized water.
Contamination
Cleaning procedure
Sludge and removable
sediment
Warm tapwater with washing-
up liquid, a smooth cloth or a
smooth sponge
Salt and/or lime sediment
Acetic acid (w = 25 %),
a smooth cloth or a smooth
sponge
1 Screw off the protection hood.
Exterior
cleaning
