6 Installation of FLUXUS F808 FLUXUS F808, F809
UMFLUXUS_F808_8091V1-2-1EN, 2019-08-23 45
6.7.4.2 Connection with potential separation
If earthing on the same potential cannot be ensured e.g., in measurement arrangements with long extension cables, ex-
tension cables and junctions boxes have to be insulated from each other. The junction box and the transducers have to be
on the same potential. Thus, no transient currents can enter the transmitter via the extension cable.
• Remove the blind plug for the connection of the extension cable (see Fig. 6.21).
• 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 of the cable gland.
• 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 brushed back external shield is below the shield terminal (see Fig. 6.21). The ex-
tension cable must remain completely insulated up to the shield terminal.
• Tighten 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 transmitter (see Fig. 6.21 and Tab. 6.17).
Tab. 6.16: Terminal assignment (junction box JB04, KL2)
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)
cable gland external shield
Note! For the installation of transducers to pipes with a cathodic corrosion protection see document
TIFLUXUS_GalvSep.
Attention! Observe the "Safety instructions for the use in explosive atmospheres" (see document SIFLUXUS).
Attention! The external shield of the extension cable must not have electrical contact to the junction box. There-
fore, the extension cable must remain completely insulated up to the shield terminal.
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