Ambient temperature
range

-40/-20 to +55/+70°C¹⁾

Relative humidity

100%100%
condensation, condensation and ice formation
permitted

Pollutant
concentration

EN60721-3-3 3C4 and ISA S71.04 G1, G2,
G3, GX²⁾

Continuous exposure

Limit value³⁾

SO₂

4.8 ppm

14.8 ppm

H₂S

9.9 ppm

49.7 ppm

Cl

0.2 ppm

1.0 ppm

HCl

0.66 ppm

3.3 ppm

HF

0.12 ppm

2.4 ppm

NH

49 ppm

247 ppm

O₃

0.1 ppm

1.0 ppm

NO_x

5.2 ppm

10.4 ppm

At RH <75%, condensation permitted

Salt mist

Salt mist test (EN 60068-2-52)

Mechanically active
substances

EN 60721-3-3 3S4

• Dust
  (suspended solids)

4.0 mg/m²h

• Dust
  (precipitation)

40 mg/m²h including sand/dust
("Arizona dust")

Biologically active substances

EN 60721-3-3 3B2
mold growth,
sponge except fauna