6 Electrical connection
50
IN 7
IN 8
IN 9
IN 10
pH/Redox
Symmetric connection of a combination electrode
Symmetric connection is used to reduce interference from
stray electromagnetic fields along the sensor cable.
A = Glass/metal electrode (core)
B = Reference electrode (inner shield)
C = Liquid potential (grounding pin, pipe, or container wall at
the measuring point)
D = Shield (outer shield)
Terminal 2 is not connected!
Slot
Option/connection variant
Symbol
1
3/4
5
6
A
B
D
C
Содержание AQUIS touch S 202581
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Страница 126: ...9 Retrofitting optional boards 126...
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