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Appendix E
CE-EMC Protection Installation
Procedure
Purpose
Procedure
To eliminate the possibility of unwanted electromagnetic signals either
going from Thermo Scientific equipment into the customer’s equipment or
from the customer’s equipment into the Thermo Scientific equipment and
for protection from high voltage spikes caused by lightning, an EMC
protection system has been developed for the Thermo Scientific LevelPRO
gauges. This procedure provides the necessary information and instruction
to perform installation of the EMC protection system properly.
The EMC protection kit comes in four configurations:




DC power without FOUNDATION fieldbus, p/n 886792
DC power with FOUNDATION fieldbus, p/n 886793 (see note at
end of procedure)
AC power without FOUNDATION fieldbus, p/n 886794
AC power with FOUNDATION fieldbus, p/n 886795 (see note at
end of procedure)
The installation is the same for all four kits, except for the addition of the
new AC power supply board.
As shown in Figure E–1 and Figure E–2 below, the DC kit comes with the
following:

An explosion proof housing for the EMC protection board

The EMC protection board installed in explosion proof housing


Thermo Fisher Scientific
The EMC protection board to detector wires, terminated at the
EMC protection board
A bracket assembly to attach the EMC board housing assembly to
the detector housing
LevelPRO Installation Guide
E-1