7 Connection
7.1 Transducers
FLUXUS G809
2020-06-25, UMFLUXUS_G809V2-2EN
70
7.1.4.2
Connection with potential separation
If earthing on the same potential cannot be ensured e.g., in measurement arrangements with long extension cables, the
extension cable and the junction box have to be electrically insulated from each other. The junction box and the transduc
-
ers have to be on the same potential. By doing this, no compensation currents can flow to the transmitter via the extension
cables.
For measurement arrangements where the junction box and the transducers have to be electrically insulated from each
other, see the document TIFLUXUS_GalvSep.
• Remove the blind plug for the connection of the extension cable.
• Open the cable gland of the extension cable. The compression part remains in the cap nut.
• Push the extension cable through the cap nut, the compression part and the basic part.
• Insert the extension cable into the junction box.
• Prepare the extension cable.
• Cut the outer shield and brush it back.
• Pull the extension cable back until the back brushed external shield is below the shield terminal, see Fig. 7.9. The exten
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sion cable has to remain completely insulated up to the shield terminal.
• Screw the gasket ring side of the basic part into the junction box.
• Fix the cable gland by screwing the cap nut onto the basic part.
• Fix the extension cable and the external shield to the shield terminal.
• Connect the extension cable to the terminals of the junction box, see Fig. 7.9 and Tab. 7.7.
Important!
Observe the max. permissible voltage of 60 V DC between the earth potentials.
Important!
The external shield of the extension cable must not have electrical contact to the junction box. Therefore, the exten
-
sion cable has to remain completely insulated up to the shield terminal.
Tab. 7.7:
Terminal assignment
terminal
connection (extension cable)
TV
white or marked cable (core)
TVS
white or marked cable (internal shield)
TRS
brown cable (internal shield)
TR
brown cable (core)
shield terminal
external shield
