Emerson 2120 Quick Start Manual page 24

Quick Start Guide

13. 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.

10.14 Instructions for 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 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 explosive gases and vapors with apparatus groups IIC, IIB,

and IIA, and with temperature classes T1, T2, T3, T4, and T5 [

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 [

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

the responsibility of the user to take

being adversely affected, thus ensuring that the type of protection is not

compromised.

24

:

in Zones 20, 21, and 22].

IECEx:

aggressive substances

suitable precautions

December 2016

in Zones 0,

IECEx:

, it is

that prevent it from