Rosemount 2120, Reference Manual

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Reference Manual
00809-0100-4030, Rev DA
June 2007
Rosemount 2120
B-13
6. If the enclosure is made of an alloy or plastic material, the following precautions must be
observed:
a. The metallic alloy used for the enclosure material may be at the accessible surface of
this equipment; in the event of rare accidents, ignition sources due to impact and
friction sparks could occur. This shall be considered when the 2120 is being installed
in locations that specifically require group II, category 1G equipment.
b. Under certain extreme circumstances, the non-metallic parts incorporated in the
enclosure of the 2120 may generate an ignition-capable level of electrostatic charge.
Therefore, when they are used for applications that specifically require group II,
category 1 equipment, the 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 2120 shall only be cleaned with a damp cloth.
7. Technical Data:
Coding: II 1 G D, EEx ia IIC T5 (Ta = -40°C to + 80°C)
T4 (Ta = -40°C to + 115°C)
T3 (Ta = -40°C to + 150°C)
Ta = the higher of the process or ambient temperature.
Input parameters: Ui:15V, Ii:32mA, Pi:100mW, Ci:12nF, Li:60μH
Temperature: Process (Tp) -40°C to 150°C
External (Ta) -40°C to +80°C (up to Tp=80°C, reducing linearly to 50°C at Tp=150°C)
Materials: Refer to Part numbering identification chart.