Adding Ferrite Clamps to 1400S Transmitter
Procedure
D-2 DensityPRO+ Installation Guide Thermo Fisher Scientific
Figure
D–2. Ferrite clamps installed within enclosure
As shown in Figure D–2 the ferrite clamp can be placed around a shielded
twisted pair cable or a bundle of individual cables, as long as the diameter
of the bundle does not exceed 5 mm (a little over 3/16”).
The ferrite clamp kit (p/n 868773) contains five clamps. Depending on
your wiring scheme, you may need additional clamps. They can be ordered
using part number 5-2720-007.
For example, in a Thermo Scientific DensityPRO+ system with a
scintillation detector, flow input, and three outputs, there will be eight
shielded twisted pair cables and one power cable. This system would
require a total of nine ferrite clamps. So you would need either two kits or
one kit and four additional clamps to be EMC compliant.
Note All ATEX version 1400S transmitters shipped after August 2009 will
contain one ferrite clamp kit and will have one ferrite clamp installed on
the AC voltage input wiring.
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Note If the locking mechanism of the clamp should fail, a plastic wire tie
can be used to secure the clamp around the wire.
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