Additional Mounting Instructions; Dimensions - Pepperl+Fuchs LGC2 Manual

Level Probe LGC2
Installation
5.2

Additional Mounting Instructions

• Cable length
• Customer-specific in meters or feet
• Limited cable length when performing installation with freely suspended device with
cable mounting screw or mounting clamp, as well as for Ex approval: max. 300 m
(984 foot).
• Sideways movement of the level probe can result in measuring errors. For this reason,
install the probe at a point free from flow and turbulence, or use a guide tube. The internal
diameter of the guide tube should be at least 1 mm (0.04 inch) greater than the external
diameter of the selected device.
• 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
Pepperl+Fuchs provides humidity and climatic protection and is suitable for installation
outdoors, see chapter 11.
• Cable length tolerance: < 5 m (16 foot): ±17.5 mm (0.69 inch); > 5 m (16 foot): ±0.2 %
• If the cable is shortened, the filter at the pressure compensation tube must be reattached.
Pepperl+Fuchs offers a cable shortening kit for this purpose, see chapter 11.
• Pepperl+Fuchs recommends using twisted, shielded cable.
• In shipbuilding applications, measures are required to restrict the spread of fire along cable
looms.
• The length of the extension cable depends on the intended level zero point. The height of
the protection 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).
Figure 5.2
5.3

Dimensions

For dimensions, please refer to the Technical Information TI00431O, "Mechanical
Construction" chapter, see chapter 1.3.
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