JUMO flowTRANS MAG H01, Operating Manual

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5 Electrical connection
5 Electrical connection
5.1 Installing the signal and magnet coil cable
Observe the following points when installing cables:
•
A magnet coil cable (red and brown) is run parallel to the signal lines (violet and blue) so that only
one cable is required between the sensor and the transmitter. Do not route the cable over junction
boxes or terminal strips.
• The signal cable carries a voltage signal of only a few millivolts and must therefore be routed over
the shortest possible distance. The maximum admissible signal cable length is 50 m (164 ft) without
a preamplifier and 200 m (656 ft) with a preamplifier.
• Avoid routing the cable in the vicinity of electrical equipment or switching elements that can create
stray fields, switching pulses, and induction. If this is not possible, run the signal and magnet coil
cable through a metal pipe and connect it to the station ground.
• All lines must be shielded and connected to the signal ground potential.
• To shield against magnetic interference, the cable contains outer shielding. It is attached to the SE
clamp.
• The supplied stranded steel wire is also connected to the SE clamp.
• Do not damage the cable sheathing during installation
• During installation, make sure that the cable is installed with a water trap (1). For vertical installation,
align the cable fittings pointing downward.
(1) Water trap
(1)