Emerson 2120 Quick Start Manual page 22

Quick Start Guide
10.13 Instructions for hazardous area installations (E1 and E7)
Model numbers covered:
2120*****E1X**, 2120*****E1S**, 2120*****E7X**, 2120*****E7S**
("*" indicates options in construction, function and materials.)
The following instructions apply to the equipment covered by certificates
numbered
Sira 05ATEX1129X and IECEx SIR 06.0051X
1. The equipment may be used with flammable gases and vapors with apparatus
groups IIA, IIB, and IIC, and with temperature classes T1, T2, T3, T4, T5, and
T6. 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. The maximum surface temperature of the
installation will be determined from the higher of the process or ambient
temperature.
3. The equipment is suitable for installation across the boundary between an
area that specifically requires Equipment Protection Level Ga (Zone 0) and an
area that specifically requires Equipment Protection Level Gb or Db (Zone 1 or
21). The probe forks (and extension tube) only to be installed in Zone 0.
4. The equipment has not been assessed as a safety related device (as referred to
by Directive 94/9/EC (2014/34/EU) Annex II, clause 1.5).
5. Installation of this equipment shall be carried out by suitably trained
personnel, in accordance with the applicable code of practice.
6. Inspection and maintenance of this equipment shall be carried out by suitably
trained personnel, in accordance with the applicable code of practice.
7. The user should not repair this equipment. Repair or modification of
flame-paths is not permitted.
8. The certification of this equipment relies upon the following materials used in
its construction:
Housing and cover:
Aluminum alloy (ASTM B85 360.0) or stainless steel 316C12
Probe (partition wall): Stainless steel 316L or 316/316L, or
Alloy C276 (UNS N10276) and Alloy C (UNS N10002 or N30002)
Probe filling: Perlite
Lid seal: Silicone
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.
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December 2016
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