Siemens SIMATIC ET 200SP HA Equipment Manual page 34

Technical specifications
B.1 Ambient conditions
Ambient conditions Permissible range
Concentration of ● SO
pollutants
● RH: <60%, no condensation
● H
● RH: <60%, no condensation
ISA-S71.04 severity level G1; G2;
G3
Derating
The cooling effect of air decreases at higher altitudes as a result of its lower density.
The table shows the derating factor for the maximum permissible ambient temperature
depending on the use of the devices at an elevation above sea level.
Table B-2
Elevation above sea level
(-1 000 m) up to 2 000 m
3 000 m
4 000 m
Note that I/O modules with relay contacts are only suitable for an elevation up to 3 000 m.
1)
Relating to the maximum permissible ambient temperature in °C for 2 000 m
2)
34
: <0.5 ppm
2
S: <0.1 ppm
2
Derating when devices are used at an elevation above sea level
1)
Comments
Test: 10 ppm; 4 days
Test: 1 ppm; 4 days
-
Derating factor for ambient temperature
1.0
0.9
0.8
Equipment Manual, 09/2019, A5E39261458-AB
2)
BusAdapter for Distributed I/O