Oxygen Monitor SGM7.2 6 Construction
6 Construction of the Oxygen Monitor SGM7.2
6.1 Principle
construction
6.1.1 General
overview
The SGM7.2 is a transportable device. The in principle structure of the
SGM7.2 shows Figure 3.
Fig. 1: Principle construction of the SGM7.2
The measuring gas get into the sensor due to little overpressure at the inlet or
an optional pump ingests the measuring gas. In the first case the optional
pressure reducer or needle valve at the gas inlet can be used to control the
gas flow. If the pump is installed the gas flow is controlled by a flow control of
the pump.
6.1.2 Construction principle of the solid electrolyte sensor
1
2
5
6
7
3
4
Measurig Gas
1 Keramikrohr
2 Keramische
Abdeckung
der
Referenzelektrode
3 Messelektrode
4 Referenzelektrode
5 Thermoelement
6 Anschlussdraht
der
Referenzelektrode
7 Anschlussdraht
der
Messelektrode
Fig. 2: Design of the solid electrolyte sensor
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