Operating instructions

Product Description
OXOR-E · Supplementary Operating Instructions · 8013035 V 2.0 · © SICK AG 9
Subject to change without notice
2.3 Measuring principle
Fig. 2 Measuring principle
The OXOR-E module is an electrochemical cell filled with an electrolyte. O
2
can diffuse in
the electrolyte through a PTFE diaphragm and is converted chemically on an electrode. The
electrical charges formed in this manner create the current that can be used as measuring
effect.
O
2
A/D BUS
1 Sample gas
2 Diffusion diaphragm
3Electrode
4 Electrolyte
5 Counter electrode
6 Measurement amplifier
1
6
2
4
5
3
● Electrochemical cell service life → p. 24, §5.2
● Information on shutting down → p. 24, §5.1