Solartron Mobrey MRL800, Installation & Maintenance Manual

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Page 16
IP2028/IM
• If the vessel has a dome top , a good guideline is to mount the Radar Level
Transmitter away from the vessel’s centre point by at least 10% of the vessel
diameter. If the Radar Level Transmitter is mounted in the centre of the
vessel, the dome top will act as a parabolic antenna, potentially enhancing
“false” echoes due to multiple reflections of the transmitted energy.
• If the vessel has a flat roof, then mounting the Radar Level Transmitter in the
centre is preferred.
2.5 Mounting the Radar Level Transmitter
Mount the Radar Level Transmitter to the tank before attaching any wires or
conduits.
If the Radar Level Transmitter is mounted on a nozzle or stand-off, ensure that
the mounting surface is aligned to within 3° of horizontal.
Note the small grub screw at the bottom of the enclosure adjacent to the
mounting nipple or flange. This grub screw may be untightened, allowing the
enclosure to be rotated on the antenna to position the conduit entry as required.
Do not rotate the enclosure by more than 180°. Once in the required orientation,
re-tighten the grub screw to lock the enclosure in position.
2.5.1 1.5” thread mounting
• The internal diameter of any nozzle must be larger than 50mm. For best
performance, the bottom of the stainless steel waveguide tube must extend
below the bottom of the nozzle by at least 5mm. (See Fig. i below)
Fig. i
5mm
minimum