references
Axial air heaters
HELIOTHERME 4000
HELIOTHERME...… is also the solution for ATEX compliance
Ex II 2 G/D II c 65°C - 105°C or 120 to 220°C EEx d/de IIB or IIC T4 to T6 – IP 6X/5X T… °C CIAT has put all its expertise and know-how into a special series of ATEX certified HELIOTHERME units. This approval, issued by an independent external body, is your guarantee of complete compliance with the ATEX directives. The ATEX HELIOTHERME range is certified for your applications: In the presence of explosive gas or dust In Zone 1 or 2 For IIB or IIC explosion groups With T4 to T6 gas auto-ignition temperatures Low pressure water, superheated water, steam, oil, compressed air etc.
What is ATEX? ATEX or explosive atmosphere can be caused in atmospheric conditions by flammable gases, vapours or mists or by combustible dusts mixed with air. After ignition, combustion spreads through the whole of the unburnt mixture. How is an ATEX zone defined? ATEX zones are determined based on the probability and duration of the occurrence of an explosive atmosphere. This risk analysis enables zones, the explosion groups and maximum surface temperature classes to be defined. Such atmospheres are mainly found in paint workshops, metal processing workshops, waste recycling, wood processing, etc. Who defines ATEX zones? Any operator of a production facility where an explosive atmosphere may occur must define the relevant ATEX zones, explosion groups and temperature classes. By doing so, the operator will also be able to set up the necessary means of prevention (communication, documentation, recommendations, etc.). "Directive 94/9/EC divides the equipment and protective systems which it covers into equipment groups and categories; this Directive (1999/92/EC) provides for a classification by the employer of the places where explosive atmospheres may occur in terms of zones and determines which equipment and protective systems groups and categories should be used in each zone."
ZONE Gas (G)
0 1 2
Dust (D)
20 21 22
Category
0 1 2
The explosive agent is:
Occurs continuously, often and over extended periods: NOT APPLICABLE TO ANY CIAT PRODUCTS Occasionally present during normal use Rarely or briefly present
GAS - EXPLOSION GROUP AND TEMPERATURE CLASS
Temperature class Max surface temp
T1
450°C Acetone Ammonia Benzene Acetic acid Ethane Ethyl acetate Ethyl chloride Methanol Naphthalene Phenol Propane Town gas Hydrogen
T2
300°C
T3
200°C
T4
135°C
T5
100°C
T6
85°C
Explosion group
IIA
i-Amyl acetate Butane Butyl alcohol
Petrol Diesel Hot oil Hexane
Acetaldehyde
II B II C
Ethylene Acetylene
Hydrogen sulphide
Ethyl ether Carbon disulphide
638
HEAT PUMPS - AIR CONDITIONING - REFRIGERATION - AIR HANDLING - HEAT EXCHANGE - NA 17.01 A