Splicing the cable using a grounded junction box
Do not solder the wires together using only electrical tape for insulation. This will result in electrical noise and reduced operational performance.
Image
A Junction box
B Cable gland
C Terminal block
D Cable
E Cable screen (Do not connect the cable screen to vessel ground.)
F The junction box may be connected to vessel ground.
Procedure
1 Mount the junction box in a suitable location.
2 Terminate the steel conduit containing the transducer cable to the junction box housing, or as close to the junction box as possible.
3 Feed the cables through the cable glands.
4 Remove the insulation from the transducer cable. Connect the individual wires to the terminal block.
5 Remove the insulation from the extension cable. Connect the individual wires to the terminal block.
6 Make sure that you have connected the wires 1:1, and that the colours match.
7 Connect the screens from both cables together.
8 Make sure that the cable screens do not have any electrical connection to the junction box housing or the cable gland.
If necessary, insulate the screens.