IM 12B6B3-E-H
Installation and wiring 3-7
3-6. Wiring the sensor system
3-6-1. Impedance measurement jumper settings
NOTE:
It is important to decide first which application and which settings are appropriate for the installation. This
decision is best done before the jumpers are installed, because the cables will rest on top of the jumpers in
their installed positions.
Table 3-1. Impedance measuring jumpers
Figure no. Jumper Settings Jumper Settings Application & Sensor Connections
Input #1 Input #2
1 High Impedance Low Impedance Normal pH sensors
Glass sensor on Input #1
Reference sensor on Input #2
2 High Impedance High Impedance Special electrodes using
2 glass sensors
(e.g. Pfaudler 18)
3 Low Impedance High Impedance ORP (pH compensated) and/or rH
metal sensor on Input #1
pH glass (as reference) on Input #2
4 Low Impedance Low Impedance ORP (Redox measurement)
metal sensor on Input #1
Normal reference on Input #2
The following four jumper figure illustrations (figure 3-9) show the jumper positions related to the figure num-
bers in the above table.
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