Rosemount 848T Manual do Utilizador Página 16
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16
Rosemount 848T Family
November 2014
www.rosemount.com
Special Conditions for Safe Use (X):
1. Provision must be made, external to the apparatus, to
ensure the rated voltage of the apparatus supply is not
exceeded by transient disturbances of more than 40%.
2. The electrical circuit is connected directly to earth; this
must be taken into account when installing the
apparatus.
NC ATEX Type n (without enclosure)
Certificate: Baseefa09ATEX0094U
Standards: EN 60079-0:2006, EN60079-15:2005
Markings: II 3 G Ex nA nL IIC T4(-50 °C ≤ T
a
≤ +85 °C),
T5(-50 °C ≤ T
a
≤ +70 °C)
Special Conditions for Safe Use (X):
1. The component must be installed in a suitable
component certified enclosure that provides a degree
of protection of at least IP54 and meets the relevant
material and environmental requirements of EN
60079-0:2006 and EN 60079-15:2005.
2. Provision must be made, external to the apparatus, to
ensure the rated voltage of the apparatus supply is not
exceeded by transient disturbances of more than 40%.
3. The electrical circuit is connected directly to earth; this
must be taken into account when installing the
apparatus.
Note
The 848T may also be installed in an external energy
limited circuit as Ex nL IIC. In this case the following
parameters apply:
ND ATEX Dust
Certificate: BAS01ATEX1315X
Standards: EN 50281-1-1:1998
Markings:
II 1 D T90 (-40 °C ≤ T
a
≤ +65 °C); IP66
Special Conditions for Safe Use (X):
1. The user must ensure that the maximum rated voltage
and current (42.4 volts, 22 milliamps DC) are not
exceeded. All connections to other apparatus or
associated apparatus shall have control over this
voltage and current equivalent to a category “ib”
circuit according to EN 50020.
2. Component approved EEx e cable entries must be used
which maintain the ingress protection of the enclosure
to at least IP66.
3. Any unused cable entry holes must be filled with
component approved EEx e blanking plugs.
4. The ambient temperature range of use shall be the
most restrictive of the apparatus, cable gland or
blanking plug.
International
I7 IECEx Intrinsic Safety
Certificate: IECEx BAS 09.0030X
Standards: IEC 60079-0:2011, IEC60079-11:2011
Markings: II 1 G Ex ia IIC T4 Ga (-50 °C
≤ T
a
≤ +60 °C)
Special Conditions for Safe Use (X):
1. The equipment must be installed in an enclosure that
provides a degree of protection of at least IP20.
Non-metallic enclosures must be suitable to prevent
electrostatic hazards and light allow or zirconium
enclosures must be protected from impact and friction
when installed.
2. The equipment is note capable of withstanding the
500 V insulation test required by EN 60079-11:2012,
clause 6.3.13. This must be taken into account when
installing the equipment.
IG IECEx FISCO Intrinsic Safety
Certificate: IECEx BAS 09.0030X
Standards: IEC 60079-0:2011, IEC60079-11:2011
Markings: II 1 G Ex ia IIC T4 Ga (-50 °C ≤ T
a
≤ +60 °C)
Special Conditions for Safe Use (X):
1. The equipment must be installed in an enclosure that
provides a degree of protection of at least IP20.
Non-metallic enclosures must be suitable to prevent
electrostatic hazards and light allow or zirconium
enclosures must be protected from impact and friction
when installed.
2. The equipment is note capable of withstanding the
500 V insulation test required by EN 60079-11:2012,
clause 6.3.13. This must be taken into account when
installing the equipment.
N7 ATEX Type n (with enclosure)
Certificate: IECEx BAS 09.0032X
Standards: IEC 60079-0:2004, IEC 60079-15:2005
Markings: Ex nA nL IIC T5(-40 °C
≤ T
a
≤ +65 °C)
Special Conditions for Safe Use (X):
1. Provision must be made, external to the apparatus, to
ensure the rated voltage of the apparatus supply is not
exceeded by transient disturbances of more than 40%.
2. The electrical circuit is connected directly to earth; this
must be taken into account when installing the
apparatus.
Table 8. Entity Parameters
Power/bus
(input)
Sensor field terminal
(output)
U
i
= 42.4 V U
o
= 12.5 V
C
i
= 2.1 nF I
o
= 2.5 mA
L
i
= 0 C
o
= 1000 μF
L
o
= 1 H
Table 9. Entity Parameters
FISCO
(input)
Sensor field terminal
(output)
U
i
= 17.5 V U
o
= 12.5 V
I
i
= 380 mA I
o
= 4.8 mA
P
i
= 5.32 W P
o
= 15 mW
C
i
= 2.1 nF C
o
= 1.2 μF
L
i
= 0 L
o
= 1 H
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