RFA-CM

The ‘ RFA-C ‘ range of immersion heaters with casing and replaceable ceramic interior provides a good solution for areas classified for oil heating or other similar processes in which a low load density is required. The heating element can be removed for inspection or replaced without the need to empty the tank. The EEx’d’ terminal box protects the electrical connections from the explosive atmosphere.

Common applications

• Water or oil preheating
• Cleaning and flushing tanks
• Process equipment
• Heat-transfer systems
• Boilers
• Anti-icing protection

General characteristics

• Certificate ATEX Ex II 2 G/D EEx’d’ IIC T3 to T6, in accordance with EN 50014 and EN 50018
• Aluminium terminal box with damp protection IP67
• Integrated temperature sensor
• Valid for ambient temperature down to -40 °C
• Heater coupling using 2” - 2”¼ - 2”½ screw cap
• Designed exclusively for horizontal fitting. Vertical fitting available on request.
• Terminal box: Aluminium box with a maximum of 2 inputs for cables, internal and external earth connection and screw cap. ATEX II 2 G/D EEx’d’ IIC T4 to T6 with optional T3 to T6 if the terminal box is separated from the coupling cap (type RFA/SO). Damp protection grade IP67.
• Heating components: Maximum of three tubular elements, fabricated with NiCr 80/20 alloy resistive wire, compacted magnesium oxide, and tubular sleeve made of copper, steel, Monel, Inconel, Incoloy 800/825, stainless steel, or titanium, welded to the cap by brazing or TIG welding depending on the application.
• Controls: RFA-C heaters incorporate overtemperature protection by default. Other temperature devices such as thermostats, thermoresistors, or thermocouples may be incorporated as options.
• Coupling: Within the design limits, it is possible to specify the thread and material of the coupler cap.
• Power: Maximum power: 14.5 kW.
• Power supply: Voltages possible up to ~690V.