User Manual Section 2
GFK-2958L May 2021
Safety 22
2.3.2 ATEX & IECEx Marking
II 3 G Ex nA IIC T4 Gc, DEMKO 16 ATEX 1591X
Ex nA IIC T4 Gc, IECEx ULD 16.0022X Ta: -20 °C to +60 °C
For Relay Modules:
II 3 G Ex nA nC IIC T4 Gc, DEMKO 16 ATEX 1591X
Ex nA nC IIC T4 Gc, IECEx ULD 16.0022X
Ta: -20 °C to +60 °C
Note: There is no ATEX conformity for the EP-1813 Power Measurement module.
2.4 Legal Notice
The modules must be mounted in an enclosure certified in accordance with EN60079-15 for
use in Zone 2, Group IIC and rated IP54. The enclosure shall only be able to be opened with
the use of a tool.
2.5 Use of RSTi-EP Stations 2,000m above Sea Level
The RSTi-EP remote I/O system can operate in height >2,000 m (6,561.68 ft) above sea level,
with the following limitations:
There is a derating for ambient temperatures while the RSTi-EP Station is in operating mode.
Refer to the following derating table.
2,001 to 3,000 m (6,564.96 to 9,842.52 ft)
3,001 to 4,000 m (9,845.80 to 13,123.36 ft)
4,001 to 5,000 m (13,126.64 to 16,404.20 ft)
2.5.1 Example:
Height 3,000 m (9,842.52 ft):
maximum operational temperature is 60° C (140 °F) x 0.88 = 52.8°C (136.76 °F) at
maximum 8A.
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