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Reference Manual
300530EN, Rev BA
September 2012
3-5
Rosemount 2410
Section 3. Installation
3.4 ELECTRICAL INSTALLATION
3.4.1 Cable Entries The Rosemount 2410 electronics housing has four ½ - 14 NPT and two
¾ - 14 NPT entries. The connections must be made in accordance with local
or plant electrical codes.
Make sure that unused ports are properly sealed to prevent moisture or other
contamination from entering the terminal block compartment of the electronics
housing.
NOTE!
Use the enclosed metal plugs to seal unused ports. The plastic plugs
mounted at delivery are not sufficient as seal!
NOTE!
It is recommended that a sealant of type PTFE is used to prevent water
ingress and to enable future removal of the plug/gland.
NPT is a standard for tapered threads. Engage the gland with 5 to 6 threads.
Note that there will be a number of thvbreads left outside the housing as
illustrated below.
Figure 3-1. Cable entry with
NPT threaded gland
Glands must meet the following requirements for the Non-IS cable entries:
• Ex de explosion protection
• IP class 66 and 67
• material: metal (recommended)
3.4.2 Power Supply The Rosemount 2410 Tank Hub accepts supply voltage 48 - 240 Vac
(50/60 Hz) and 24 - 48 Vdc The 2410 provides intrinsically safe power to all
devices connected to the Tankbus (see “Tankbus” on page 3-8).
3.4.3 Cable Selection
for Power Supply
Cables must be suitable for the supply voltage and approved for use in
hazardous areas, where applicable. For instance, in the U.S., explosion-proof
conduits must be used in the vicinity of the vessel.
Suitable conduits with sealing device or flame proof cable glands must be
used depending on local requirements.
Appropriate cross sectional area of wires must be used in order to prevent a
too high voltage drop to the connected device. Use 0.75 mm
2
to 2.5 mm
2
(18 AWG to 13 AWG) in order to minimize the voltage drop.
The NPT threaded gland leaves a
number of threads outside the housing