The watt density, tube diameter and the tube sheath are chosen to optimize the reliability and robustness (corrosion, temperature) of CETAL equipments.
In addition to heater design, the use of specifically developed connection boxes allows to install the products in hazardous areas.
The increased safety protection mode “e” (EN60079-7) or the explosion-proof protection mode “d” (EN 60079-1), together with temperature control acc. to EN 60079-0, make it possible to operate the equipments in hazardous area (zone 1 and zone 2) for gases of the A-B-C groups.
With this method, the housing (casing):
The following factors are selected depending on the internal free volume of the enclosure and the gas present in the area:
The power and temperature control circuits can be accommodated in separate housings.
Method: To prevent the occurrence of any accidental ignition source (electric arcs, heating).
This mode of protection is achieved by: