Anchor The Probe; Flexible Single/Twin Lead Probe - Emerson Rosemount 3308A Reference Manual

Reference Manual
00809-0100-4308, Rev CA
3.5

Anchor the probe

In turbulent tanks it may be necessary to fix the probe. Depending on the probe type, different methods
can be used to guide the probe to the tank bottom. This may be needed in order to prevent the probe
from hitting the tank wall or other objects in the tank, as well as preventing a probe from breaking.
3.5.1

Flexible single/twin lead probe

The flexible single lead probe itself can be used for anchoring. Pull the probe rope through a suitable
anchoring point, e.g. a welded eye, and fasten it with a chuck.
The length of the loop will add to the Blind Zone. The location of the chuck will determine the beginning
of the Blind Zone. See
Zones.
The Probe Length should be configured as the distance from the Upper Reference Point to the top of the
chuck.
Figure 3-12. Flexible Single Lead Probe with Chuck
A ring (customer supplied) can be attached to the weight in a threaded (M8x14) hole at the end of the
weight. Attach the ring to a suitable anchoring point.
Figure 3-13. Flexible Twin/Single Lead Probe with Weight and Ring
A. Weight with internal threads M8x14
B. Ring
A magnet (customer supplied) can be fastened in a threaded (M8x14) hole at the end of the weight. The
probe can then be guided by placing a suitable metal plate beneath the magnet.
Installation
PRELIMINARY
"Accuracy over measuring range" on page 114
A
B
Installation
August 2017
for further information on Blind
33