OTT ecoLog 800, Руководство по эксплуатации

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B) Desiccant capsule for communication unit
Remove the exhausted desiccant capsule of the communication unit, as shown
in Figure 29.
Install new desiccant capsule.
Slide the pipe casing of the communication unit back up to the stop.
Please note: Do not bend or pinch the battery lead.
Reinstall the screw fitting to the communication unit.
Slowly and carefully reinsert the communication unit into the observation well.
Close the top cap/observation well cover.
18.3 Checking/replacing the batteries
Refer to Chapter 5
18.4 Calibrating the conductivity sensor
The goal of the calibration is to determine the so-called "cell constant" for the con-
ductivity sensor. To do this, it is necessary to check the zero point and to carry out
a conductivity measurement with a standardized calibration solution.
The cell constant – as well as the unchanging geometric measurements, the mate -
rials used and the construction of the conductivity sensor – takes account of the
aging process of the electrodes.
Recommended interval: every 12 months (after every cleaning)
with difficult local measuring conditions (heavy deposits):
as required every 4 to 6 months
Required accessories: standardized calibration solution, calibration container
(see Chapter 2, "Order numbers")
Communication unit
desiccant capsule
Fig. 29: Replacing the communication
unit desiccant capsule.
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