Cartridge heaters

Screw-in heaters are versatile and intended for heating liquid media in industrial and commercial applications. When selecting, the specific surface load permitted for the respective medium must be observed and checked by the customer. EHK G2 are mainly used for heating hydraulic oil in containers in which the replacement of the heating cartridge without draining the medium must be possible. Ceramic heating cartridge in stainless steel tube ø 50mm, material-no. 1.4512 or material-no. 1.4404. G2″ thread SW70 welded from V2A. Terminal box made of PA6-GF30, impact-resistant and oil-resistant, degree of protection IP66/67. Unheated zone 50mm, surface load 1,5 W/cm², voltage 230/400 V. Special versions on request.

Occasionally also these terms are used for cartridge heates: heating cartridge, insertion heaters, spiral cartridge heaters. As a rule cartridge heaters consist of a cylindrical stainless steel tube and thus provide a high corrosion prevention. There is a heating wire inside which is wound onto a ceramic core. The number of coils varies depending on the power. In order to avoid a short-circuit, the cartridge heater is filled with magnesium oxide and compressed afterwards. Highly compacted they reach a surface watt density of up to 50 W/cm² and withstand highest stress. In the plastics industry cartridge heaters are used in hot runners in order to temper thermoplasts during injection moulding processes. Other areas of applications for process heat are e. g. packaging, diecasting or continuous casting in which zinc or aluminium are processed. Further applications are to be found in mechanical as well as medical and laboratory engineering.

In order to meet the demands for robustness and efficient heat output, we have embroidered the heating element on a glass mesh fabric carrier material. Between the meandering arrangement of the heating strands, we integrate a recess for the temperature switch in the CAD layout. In addition, a second wire is laid concurrently as a PTC thermistor for the electrical connection of the safety switch. After the technical embroidery process, the safety switch is inserted and connected by our company’s respective department. Each prefabricated element is tested for functionality and performance in the final inspection and is delivered to the customer after passing the test. As a semi-finished product, the infrared heating element on glass mesh fabric can be further processed by the customer, e.g. in connection with silicone, rubber or epoxy resin.

CSN ® Explosion proof cartridge heaters as direct heaters for liquids or gases in hazardous environment. These units are equipped with a heating bundle or a replaceable ceramic heating element. For temperature control these heaters are available with an integrated temperature monitoring system. These devices are available in various material grades. The electric cartridge heating element type 93./..EEx….T.(.) is designed for the heating of liquids in the zone 1 and zone 2. The standars elements, mentioned in this list are suitable for DGRL (code 2014/68/EU) Art. 4, Para. 3. The elements can be suited (on request) to other uses requiring another classification according to DGRL Further information about our CSN® ExCartridge Heater