CSN® Ex flow heater type H_14Ex

CSN® Ex flow heater for very high outputs up to 2000 kW (up to NW1000), suitable for offshore use.


Our CSN® Ex flow heater delivers outputs of up to 2000 kW and is perfect for heating flowing liquid or gaseous media. With integrated temperature monitoring, our electric instantaneous water heater not only offers efficient heat transfer, but also maximum safety in potentially explosive atmospheres.

Product advantages

  • High outputs possible
  • Signal transmitters and standstill heaters can be provided
  • Suitable for offshore use (stainless steel connection cover)
  • Integrated temperature monitoring
  • Approval for Zone 1 and Zone 21
  • Approval according to ATEX and IECEx. Further approvals (Peso, EAC) available
Also available with explosion protection

Technical data


Zone 1, Zone 21



Optional: Peso, EAC

Temperature class

T1 to T6

Ambient temperature range

Standard -20°C to +40°C

Power (kW)

up to 2000

Voltage (V)

up to 1375

Protection class

IP 66


Liquid and gaseous

Process data

Medium, pressure and temperature according to specification

Housing / inlet and outlet nozzles

Flange connections and others

Heating elements

Tubular heating elements

Housing materials

Steel, 1.4404 (AISI 316L);

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

1.4876 (Incoloy 800); 2.4858 (Incoloy 825)

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

Installation length of heating elements (mm)

300 to 3500

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

PT100 (standard)

Thermocouple (optional)

Temperature controller (optional)

Temperature limiter (optional)


HF = for liquids

HGB = for gases, Ex zone on 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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