Commissioning; Conditioning, Calibration, Measurement - Xylem wtw NO 800 DIN Operating Manual

Commissioning

Combination elec-
trode NO 800
General informa-
tion
Before measuring
18
Commissioning
1 Remove the storage vessel.
2 Fill ELY/BR/503/N bridge electrolyte into the filling opening so that
the inner junctions are covered with bridge electrolyte.
3 Rinse the combination electrode with deionized water.
4 Wipe the shaft using a clean paper towel.

Conditioning, calibration, measurement

When operating the electrode ensure that
 the filling opening (1) for the bridge electrolyte is open
 the inner junctions (3) are covered with bridge electrolyte
 no air bubbles are in the bridge electrolyte
 the depth of immersion is within the optimum range:
Minimum depth of
immersion
Maximum depth of
immersion
1 Condition every ion sensitive electrode in standard solution before
using it.
1
2
3
4
The outer junction (4) must be covered
Approx. 1 cm below the fluid level (2) of the
bridge electrolyte
NO 800
ba15362d04 12/2021