Endress+Hauser OxyMax W COS 71, Руководство по эксплуатации

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OxyMax W COS 71 3 Installation
Hauser 9
3.4 Sensor design and functional description
The following figures show an enlarged side view (Fig. 3.8) and a top view (Fig. 3.9) of
the sensor head.
3.4.1 Design
The sensor consists of the following
function units:
•
Sensor body with integrated
sensor electronics
•
Sensor head with gold cathode,
counter electrode and
reference electrode
•
Membrane cap with electrolyte
•
Protection basket
The electrical connection is either done by
a fixed cable (1) or by a TOP 68 plug-in
connection.
The threaded connection G 1 (2) is
designed for installing the sensor in an
assembly.
The protection basket (4) is screwed on.
The membrane cap screwed onto the
sensor head is filled with electrolyte. The
screw connection seals it from the
medium.
The membrane which is in contact with the
medium is seated tightly in the membrane
cap (pretensioned in the factory).
The gold cathode (5), the counter elec-
trode (Ag/AgBr, 8), the reference electrode
(Ag / AgBr, 9) and two internal temperature
sensors are located inside the sensor
head.
Fig. 3.7: Design of the sensor COS 71
1 Sensor cable
2 Threaded connection G 1
3 Sensor body
4 Protection basket
5 Gold cathode
6 Membrane
7 Electrolyte
8 Counter electrode
9 Reference electrode
Fig. 3.8: Sensor head with membrane cap
(Side view with cut-away view of
membrane cap) Fig. 3.9: Sensor head (top view with membrane
cap removed)
1 Screw thread for protection basket 6 Membrane cap
2 Sealing ring 7 Counter electrode
3 Screw thread for membrane cap 8 Reference electrode
4 Electrolyte 9 Gold cathode
5 Membrane
1
3
4
5
6
7
8
2
9
C07-COS31xxx-03-05-07-xx-001.EPS
C07-COS31xxx-16-05-07-xx-001.EPS
1
2
3
4
5
6
7
8
C07-COS31xxx-16-05-03-xx-002.EPS
9