CSN® Ex air heater type H_14Ex

CSN® Ex air heater for outputs up to 2000 kW, for heating flowing gaseous media.


The CSN® Ex air heater with an output of up to 2000 kW offers a reliable and versatile solution for the efficient heating of flowing gaseous media. Its special design ensures precise temperature control and meets the highest safety standards. Ideal for demanding applications in areas such as the chemical industry, petrochemical plants, food production, pharmaceutical industry and power generation.

Product benefits

  • Integrated temperature monitoring
  • Approval for Zone 1 and Zone 21
  • Geometry can be flexibly customised
  • Low pressure loss
  • Approval according to ATEX and IECEx. Further approvals (Peso, EAC) available
Also available with explosion protection

Technical data


Zone 1, Zone 21

Location of the Ex-Zone

Outside airflow (standard)

Inside airflow (special design)



Optional: Peso, EAC

Temperature class

T1 to T4

Ambient temperature range

Standard -20°C to +40°C

Power (kW)

until 2000

Voltage (V)

until 1375

Protection class

IP 66


flowing gaseous

Process data

Medium, pressure and temperature according to specification

Housing / inlet and outlet nozzles

Flange connections (round/angular) and others

Heating elements

Tubular heating elements

Housing materials

Steel, 1.4404 (AISI 316L); 1.4541 (AISI 321); 1.4571 (AISI 316 Ti)

Heating element materials

1.4404 (AISI 316L); 1.4541 (AISI 321); 1.4571 (AISI 316 Ti);

1.4876 (Incoloy 800); 2.4858 (Incoloy 825)

Material of connection cover

1.4301 (AISI 304) (standard)

Temperature monitoring (version via intrinsically safe circuits (Ex i))

PT100 (standard)

Thermocouple (optional)

Temperature controller (optional)

Temperature limiter (optional)


HGB = for gases, Ex zone on the heating element

HGN = for gases, no Ex zone on the heating element

Customised versions on request

The following certifications are available on request:

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