Immersion Heaters Zone 1/21

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Enclosure	Cast aluminium alloy with a maximum of one M20 and one M25 cable entry, external and internal earths and screwed terminal cover; certified Ex d IIC T4 to T6 with the option of T3 to T6, where the terminal enclosure is stood away from the processing equipment
Element	A maximum of three rod-type elements, comprising 80/20 nickel chrome resistance wire, compacted in high purity magnesium oxide insulating powder and encased in either Incoloy 800, 825 or 316L, 304 or 321 stainless steel, secured by either brazing or welding depending upon the process application
Controls	Heater over temperature protection is fitted as standard
Mounting	Any threaded NPT or BSP boss or flange in any material can be specified within the limits of the design parameters; heaters can be either ‘direct-on’ or ‘standoff’ as required by the certification
Rating	12kW (water applications) and up to 3kW (light-medium oil applications
Voltage	Any electrical supply up to 690V equipment

Ex II 2 G
Ex d IIC T3 to T6 Gb Zone 1 and 2

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