Operating Instructions
10
4.6 Use in Ex Hazard Array
Marking DustEx:
II 1/2D Ex tD IP 65 T84 °C
Zone 20: 0 °C _< T
prozess
_< 80 °C
Zone 21: -10 °C _< T
amb
_< 60 °C
- Group of equipment 2
- Equipment category: 1/2
Waveguide window zone 20 / Housing zone 21
- For combustible mixtures from air and inflammable type of dust
- IP-Code 65
- Maximum surface temperature 84 °C with Ta = 60 °C
Marking GasEx:
II 1/2D Ex tD A20/21 IP 65 T84 °C
II 2G Ex d IIC T5/T3
- Group of equipment 2
- Equipment category: 2
- Zone 1
- For combustible mixtures from air and inflammable type of gas
- IP-Code 65
- Allowable process temperature 0 to 150 °C
- Class of temperature T3
- Maximum surface temperature 84 °C with Ta = 60 °C
Ex hazard array
DustEx zone 20
GasEx zone 1
Zone 21/22
Zone 1/2
No ex hazard array
Tmax = 60 °C
Tmax =
150 °C
