Product Specifications
2
0
1
8
-1
2
9
2.4
Field Units (Surrounding Enclosures)
Field units serve to protect all electronic components against environmental influences and are
an integral part of explosion protection. The enclosures are made of glass fiber reinforced
polyester or stainless steel and are available in various versions. The surrounding enclosures
contain backplanes for the connection of modules. The modular concept allows multiple
surrounding enclosures to be flanged together to create the required expansion level. Each
surrounding enclosure contains Ex-e terminals for power and communication lines. For safety,
these are individually equipped with protective covers (IP30) and touch protection.
The surrounding enclosures are equipped with a rating plate listing all safety-relevant
information, e.g., type of ignition protection, temperature class, permissible ambient
temperature and permissible power.
Plastic enclosure
Figure 2.2
Field unit with plastic enclosure partially without cover and modules
Glass fiber reinforced polyester offers a high level of mechanical protection for both onshore
and offshore plants.
Stainless steel enclosure
Figure 2.3
Field unit with stainless steel enclosure without modules
The stainless steel enclosure ensures a high level of corrosion resistance for onshore and
offshore plants.
