Verifications And Tests On Modified Or Repaired Electrical Apparatus; System With 14 Mbar Operating Pressure; Preparations - Emerson Rosemount BINOS 100 F Instruction Manual

MLT 2 / BINOS
4-4 Verifications and Tests on
Modified or Repaired Electrical
Apparatus
Modifications made on the electrical
apparatus affecting the integrity of the type
of protection or the temperature of the
apparatus shall be permitted only if the
modified apparatus is resubmitted to a
testing station.
4-4-1

System with 14 mbar Operating Pressure

4-4-1-1 Preparations

Required tools:
Manometer with full scale between 50
•
and 100 mbar and resolution of
0.1 mbar.
Flow meter with full scale between 5
•
and 10 l/min, resolution 0.1 l/min.
Test gas: Compressd air or Nitrogen,
•
pressure reduced to max. 1,500 hPa.
To carry out the routine tests the following
steps have to be performed:
Disconnect the analyzer and the
•
pressurization unit from power.
• Seal the purge medium outlet at the
pressurization unit (1" opening at the left
side).
• Disconnect the containment system
gas connectors from the external gas
lines.
4 - 2
®
100 F
4-4 Verifications and Tests
ATEX Instruction Manual
In the case of repairs of electrical apparatus
affecting the type of protection, the parts
which have been repaired should be
subjected to new routine verifications and
tests. These test s need not necessarily be
made by the manufacturer.
• Pressure regulator to reduce the pressure
to values of 25 resp. 37.5 mbar.
Equipment for flow regulation
•
1 plug to seal the purge gas outlet
•
(size 1")
1 plug to seal gas outlet (size 6 mm)
•
• Disconnect one of the containment
system gas connectors inside the
analyzer and seal the other one.
(Remark: Now it must be possible set
the enclosure under pressure by
applying an external gas (e.g.
compressed air) to the gas connector.)
Connect an external source of
•
compressed air as described in the
drawing on the next page (fig. 4-1).
Emerson Process Management Manufacturing GmbH & Co. OHG
ETC01035
August 2005