Emerson Rosemount 2120 Reference Manual page 66
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Reference Manual
00809-0100-4030, Rev FA
c. Pressure: Must not exceed the rating of the
coupling/flange fitted.
d. For electrical details and pressure ratings, refer to
"Specifications" on page
e. Year of manufacture: Printed on product label.
13. Cable selection
It is the responsibility of the user to ensure that suitably
temperature rated cable is used. Note that the cable entry
temperature may exceed 70 °C.
Table B-4
is a guide to selection.
Table B-4. Cable Selection (E1 and E7)
T Class
T6
T5
T4
T3
14. Special conditions of use
a. The user is to ensure the probe assembly is installed in
such a way to prevent any damage due to impact or
ignition source due to friction.
b. Under certain extreme circumstances, a
non-standard paint on the enclosure of the
Rosemount 2120 may generate an ignition-capable
level of electrostatic charge. Therefore, the
Rosemount 2120 shall not be installed in a location
where the external conditions are conducive to the
build-up of electrostatic charge on such surfaces.
Additionally, the Rosemount 2120 shall only be
cleaned with a damp cloth.
c. The user is to ensure the ambient air temperature (Ta)
and the process temperature (Tp) are within the
range detailed above for the T class of the specific
flammable gases or vapors present.
d. The user is to ensure the ambient air temperature (Ta)
and the process temperature (Tp) are within the
range detailed above for the maximum surface
temperature of the specific flammable dusts present.
60
35.
Cable temperature rating
Above 85 °C
Above 100 °C
Above 135 °C
Above 160 °C
ATEX intrinsically safe approval
I1
Certificate: Sira 05ATEX2130X
Intrinsically Safe for gas and dust environments:
ATEX Marking
II 1 G D
Ex ia IIC T5...T2 Ga
Ex ia IIIC T85°C...T265°C Da
Note
A certified isolating amplifier to IEC 60947-5-6 is required for
intrinsic safety if the NAMUR electronics is used in a hazardous area
installation.
A certified intrinsically safe barrier is required for intrinsic safety if
the 8/16 mA electronics is used in a hazardous area installation.
Instructions specific to hazardous area installations (I1 and I7)
Model numbers covered:
2120***H*I1**, 2120***C*I1**, 2120***K*I1**
2120***H*I7**, 2120***C*I7**, 2120***K*I7*
("*" indicates options in construction, function and materials – see
Table A-8 on page
46)
The following instructions apply to the equipment covered by
certificates numbered Sira 05ATEX2130X and IECEx Sir
06.0070X:
1. The Intrinsically Safe approved versions of the 2120 may be
used in a hazardous area with flammable gases and vapors
with apparatus groups IIC, IIB, and IIA, and with temperature
classes T1, T2, T3, T4, and T5 [IECEx: in Zones 0, 1, and 2].
The temperature class of the installation will be determined
from the higher of the process or ambient temperature.
2. The equipment may be used in a hazardous area with
explosive dusts with apparatus groups IIIC, IIIB, and IIIA
[IECEx: in Zones 20, 21, and 22].
The maximum surface temperature of the installation will be
determined from the higher of the process or ambient
temperature.
3. It is a special condition of the certification that the
temperature of the electronics housing is in the range of
–50 to +80 °C. It must not be used outside this range. It will
be necessary to limit the external ambient temperature if the
process temperature is high. (See "Technical Data" below).
4. Suitably trained personnel shall carry out installation in
accordance with the applicable code of practice.
5. The user should not repair this equipment.
6. If the equipment is likely to come into contact with
aggressive substances, it is the responsibility of the user to
take suitable precautions that prevent it from being
adversely affected, thus ensuring that the type of protection
is not compromised.
Product Certifications
December 2016
Product Certifications
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