Xylem 201570, Operating Manual

Page: 7 / 20

DurOx 325 Measuring / Operation
7 ba25400e04 10/2020
4 Measuring / Operation
4.1 Calibration
Note
For calibration, please refer to the operating manual of the measuring
instrument.
4.2 Measuring
Note the required minimum depth of immersion and minimum approach flow
(see chapter 7 T
ECHNICAL DATA
).
The minimum flow can be provided in different ways, e. g.:

The flow of the water to be measured is sufficient (aeration tank, water
pipe, stream)

Slowly pull the sensor through the water by hand (lake, container), or

Use a flow aid, e.g. stirrer.
4.3 Storage
Always store the sensor in the calibration and storage vessel at a
temperature in the range 0 ... +50 °C (32 ... 122 °F). Make sure that the
sponge in the calibration and storage vessel is always moist.
Calibration and
storage vessel,
OxiCal
®
-D
Moisten the sponge:

Pull out the insert (1).

Take out the sponge (2), wet it, then slightly squeeze it out.

Put in the sponge and install the insert in the calibration and storage
vessel again.
1 2