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Assembly and installation
4.2.4
The pH resp. redox probe is connected via a coaxial cable:
The shield clip is connected internally to terminal 3.
Under normal circumstances measuring can be carried out without
connecting a liquid reference potential. In this case provide wire jumpers
between terminals 1 and 2.
When electrical conditions are more complex a potential plug should be
connected to terminal 1. Terminal 2 is left free.
The appendix contains an overview of connection options (terminal
connection plan).
4.2.5
Fig. 7
Page 16
Connecting coaxial cable
Strip back to reveal cable shield (reference electrode) in accordance with
fig. 7 (left) and clamp using the shield clip.
Connecting terminals
Remove insulation from cable ends as shown in fig. 7 (right) and attach
end crimps to each core.
Connect the cables in accordance with the terminal connection plan.
IMPORTANT
• Do not operate PROFIBUS
• Connect PROFIBUS
and 4 on the PROFIBUS
not terminals 7 and 8 in the front section.
NOTE
• The terminal connection plan is given in the appendix.
There is also a panel giving connection information affixed
to the housing near the terminals (fig. 6,
• Push the cable through the housing until the front section
can be moved up and down easily.
• If the LC display is too weak, reduce the brightness using
the up arrow key
brightness using the down arrow key
3459_4
®
variants at voltages over 30 V.
®
variant power supplies via terminals 3
®
circuit board in the back section,
. If the display is too dark, increase the
Fig. 8
pH/ORP
Cl/ClO /O
liquid pot.
(blk)-U
1
---
2
(bl) +U
---
3
ref.el.
4
glass el.
(br) meas.sig.
Pt100 +
5
(wth) Pt1000 +
6
Pt100 -
(gr) Pt1000 - /sig.gnd.
and fig. 8).
.
2
3
+
7
4to20mA
8
-
ProMinent
®
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