Xylem WQL-pH pH DATALOGGERS - Manual (Page 64)

Maintenance, cleaning, storage WQL-pH
138 ba75821e01 10/2009
11.3 Replacing the electrode
Note
When replacing the electrode the general maintenance instructions in
section 11.1 must be followed.
The electrode is replaced in the same way as it was installed during the
commissioning (see section 3.1.3 I
NSTALLING THE ELECTRODE ).
11.4 Battery
11.4.1 Battery service life
The logger has an energy saving feature. The service life of the battery
depends very much on the usage of the logger, especially on the measuring
interval. The service life to be expected of a full battery (2600 mAh) can be
estimated by means of the following table:
Note
When inserting the battery, note down the installation time on the battery to
be able to estimate the remaining operational lifetime. When a battery is
inserted, the logger consumes a small amount of energy even when it is not
working. Therefore, we recommend to remove the battery during longer
measuring breaks.
11.4.2 Battery replacement
Note
When replacing the battery the general maintenance instructions in
section 11.1 must be followed.
The battery is replaced in the same way as it is inserted during the
commissioning (see section 3.1.2 I
NSERTING THE BATTERY ).
Measuring interval Service time to be expected
1 sec 3 months
5 sec 5 months
10 sec 7 months
30 sec 11 months
1 min 13 months
5 min 15 months
10 min and longer 16 months