Siemens SIMATIC ET 200SP HA Panduan Peralatan - Halaman 34

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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;

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.

Relating to the maximum permissible ambient temperature in °C for 2 000 m

: <0.5 ppm

S: <0.1 ppm

Derating when devices are used at an elevation above sea level

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

BusAdapter for Distributed I/O