Rosemount 2120 - ATEX;IECEx Intrinsically Safe Installation (I1;I7)

Quick Start Guide
25
August 2012
Instructions specific to hazardous area installations (I1 and I7)
Model numbers covered:
2120***H*I1**, 2120***K*I1**
2120***H*I7**, 2120***K*I7*
(“*” indicates options in construction, function and materials)
The following instructions apply to the equipment covered by certificate number
Sira 05ATEX2130X and IECEx Sir 06.0070X:
1. The Intrinsically Safe approved versions of the 2120 may be used in a hazardous
area with explosive 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 also “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.
Aggressive substances – e.g. acidic liquids or gases that may attack metals or
solvents that may affect polymeric materials.
Suitable precautions – e.g. regular checks as part of routine inspections or
establishing from the material’s data sheet that it is resistant to specific chemicals.
7. The 2120 meets the requirements of clause 6.3.12 (Isolation of circuits from earth
or frame) in EN 60079-11 (IEC 60079-11).
8. Technical Data:
a. Coding:
ATEX:
II 1 G D
Ex ia IIC T5...T2 Ga
Ex ia IIIC T85 °C...T265 °C Da
IECEx:
Ex ia IIC T5...T2 Ga
Ex ia IIIC T85 °C...T265 °C Da