Namur Contact; Cable Entries; Flowmeter Sensor Insulation; Special Information For Use In Category 1 - ABB CoriolisMaster serie Inbetriebnahmeanleitung

6.4.3

NAMUR contact

„A"
2
1
BR902
„B"
2 1
BR902
Fig. 26: Positions of jumpers
"A" Standard wiring | "B" NAMUR wiring
1 Jumper BR902 | 2 Jumper BR901
Jumper Number Function
BR902 1 Standard configuration, preferred for Ex "e"
(factory default)
BR901 1
BR902 2 NAMUR configuration, preferred for Ex "i"
BR901 2
The switching output and the pulse output (terminals 41 / 42
and 51 / 52) can be wired internally as a NAMUR contact for
the purpose of connecting to a NAMUR amplifier; this is
achieved by setting the jumpers accordingly.
6.4.4

Cable entries

The devices are supplied either with cable glands or with
1/2" NPT threads;
you specify which you require in the order number. The cable
glands supplied are ATEX-/IECEx-certified. In order to achieve
the required tightness, the outer cable diameter must be
between 5 mm (0.20 inch) and 9 mm (0.35 inch).
DANGER – Risk of explosion!
Risk of explosion due to the use of unsuitable
cable glands.
With ATEX- / IECEx-certified devices with 1/2"
NPT threads, the operator must ensure that the
cable piping/glands are installed in accordance
with the relevant national standards (e.g., NEC,
CEC, ATEX137, IEC60079-14. etc.).
Special instructions for devices with CSA certification
Devices certified in accordance with CSA are only ever
supplied with 1/2" NPT threads without glands.
1
2
G10368
6.4.5

Flowmeter sensor insulation

If the flowmeter is to be insulated, follow the instructions in the
"Mounting / Installation positions / Installation with option TE1
"extended tower length"" section.
6.4.6

Special information for use in Category 1

The inside of the meter tube or nominal sizes ≥ DN 50 (2")
may correspond to Category 1 (Zone 0). The corrosion
resistance of the materials must be taken into account.
6.4.7 Operation in Zone 2 with protection class
"restricted breathing" (nR)
The transmitter housing (rectangular or round, compact or
separate) can be operated in Zone 2 with protection class
"restricted breathing" (nR).
WARNING – Potentially adverse effect on
protection class
The operator must check the device in
accordance with IEC 60079-15 following
installation or maintenance, or each time the
housing has been opened.
Carrying out the check
1. Switch off the power supply and wait for at least two
minutes before opening the housing.
2. Remove a cable gland which is not being used. Cable
glands certified to ATEX or IECEx are usually used,
e.g., M20 x 1.5 or 1/2" NPT thread.
3. Connect the device being used to test the pressure in place
of the cable gland you removed. Check that the test device
has been installed and sealed correctly.
 Carry out the test with the test device.
5. Remove the test device and put the cable gland back in
place correctly.
Before the power supply is switched on again, the housing,
seals, thread, and cable entries must be subjected to a visual
inspection. There must be no evidence of damage.
IMPORTANT (NOTE)
When selecting a location for the transmitter,
make sure that it will not be exposed to direct
sunlight.
If exposure to direct sunlight cannot be avoided,
a sun shade should be installed.
The limit values for the ambient temperature must
be observed.
For FNICO or FISCO installations, the number of
devices must be limited as per the applicable
standard.
CoriolisMaster FCB330, FCB350 | CI/FCB300-X1 EN - 29