Xylem CellOx 325 Dissolved oxygen sensor Manual de usuario descargar pdf (Pagina 8)

Maintenance, cleaning, replacement CellOx 325

5.3 Changing the electrolyte and membrane head

Caution

Before starting to work with the sensor, please note the GENERAL

MAINTENANCE INSTRUCTIONS on page 23.

General

information

WTW delivers the sensor ready to operate (see section 3). The electrolyte

solution and the membrane head must only be replaced if:

l a calibration error occurs and the membrane is heavily contaminated

l the membrane is damaged

l the electrolyte solution is exhausted

l in case of a leak message by the measuring instrument.

Changing the electrolyte solution and the membrane head

Unscrew the membrane

head.

Caution:

Electrolyte solution!

For disposal of the membrane

head and electrolyte solution,

see section 5.6.

Rinse the sensor head with

deionized water.

Carefully rub and dry the

counter electrode with a lint-

free paper towel.

Immerse the sensor head in-

cluding the counter electrode

in RL/G cleaning solution.

Allow to react for 1 to 3 min-

utes.

Thoroughly rinse the sensor

head with deionized water.

Water the counter electrode in

deionized water for at least

10 minutes.

RL/G H O

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Xylem CellOx 325 Dissolved oxygen sensor Manual de usuario Pagina 8