Endress+Hauser Waterpilot FMX11, Operating Instructions Manual

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Installation Waterpilot FMX11
12 Hauser
5 Installation
5.1 Installation conditions
• Sideways movement of the level probe can result in measuring errors. Install the probe
at a point free from flow and turbulence or use a guiding tube. The internal diameter of
the guiding tube should be at least 1 mm (0.04 in) greater than the outer diameter of
the FMX11.
• To avoid mechanical damage to the measuring cell, the device is equipped with a
protection cap.
• The cable must end in a dry room or a suitable terminal box. The terminal box from
Hauser provides humidity and climatic protection and is suitable for installation
outdoors.
• Cable length tolerance: ±< 50 mm (1.97 in)
• Hauser recommends using twisted, shielded cable.
• The length of the extension cable depends on the intended level zero point. The height
of the protective cap must be taken into consideration when designing the layout of the
measuring point. The level zero point (E) corresponds to the position of the process
isolating diaphragm. Level zero point = E; tip of probe = L (see the following diagram).
L
E
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