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Operating Instructions
4.5 Use in hazardous areas
Dust explosion zone identification:
- Equipment group 2
- Equipment category: 1/2
Waveguide window zone 20 / housing zone 21
- For explosive mixtures of air and combustible dust
- IP code 65
- Maximum surface temperature 84 °C at Ta = 60 °C
Gas explosion zone identification:
- Equipment group 2
- Equipment category: 2
- Zone 1
- For explosive mixtures of air and combustible gases
- IP code 65
- Permitted process temperature 0 to 150 °C
- Temperature class T3
- Maximum surface temperature 84 °C at Ta = 60 °C
Ex hazard array
DustEx zone 20
GasEx zone 1
Zone 21/22
Zone 1/2
Tmax =
150 °C
Tmax = 60 °C
II 1/2D Ex tD IP 65 T84 °C
Zone 20:
0 °C _ < T
process
Zone 21:
-10 °C _ < T
amb
II 1/2D Ex tD A20/21 IP 65 T84 °C
II 2G Ex d IIC T5/T3
No Ex hazard array
C1-Ex-Box
_ < 80 °C
_ < 60 °C
12
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