Temperature Sensitive Foods
eltherm GmbH (Headquarters)
Phone: +49 2736 4413-8280
Fax: +49 2736 4413-50
TRACE HEATERS &
As a global provider of electrical heat tracing solutions, eltherm offers a wide range of heating tapes, heating cables and trace heaters for various industrial applications. In most cases these are actually for freeze prevention or temperature maintenance. Due to the different designs of the outer jackets, we can cover temperatures of up to 900 °C with our heaters.
Which insulation covers which temperature range?
Series Resistance Heating Cables, fluoropolymer-insulated
Constant wattage heating cables with resistance wire
The heat is generated by allowing an electric current to flow through a specifically adapted conductive material with high electrical resistance, which is then heated up. According to Ohm's law, the heat performance depends on the resistance level (as a function of the specific resistance of the material, its cross section and length) as well as the electrical current flow and thus on the voltage applied. The electrical current flow must not be so high that the melting temperature of the conductor material or the limit temperature of the insulating carrier is reached. For power output regulation purposes, several resistances can be connected in parallel or in series.
Parallel constant wattage heating cables with resistance wire (for example ELP/Si) consist of 2 supply conductors embedded in a first insulation. Wrapped around with the heating conductor, which is surrounded by a second insulation. The corresponding protective braid and the outer jacket provides maximum safety. For example: Typical applications are food industry for heating various pipes, vessels or valves as freeze prevention or temperature maintenance. The required nominal power output is calculated on the basis of various specifications, such as supply voltage, minimum and maximum ambient temperature and maintain temperature. Feel free to contact us!
Series resistance heating cables can be provided as factory assembled (e.g. ELK-AG-L) or cut to length (e.g. ELKM-AG-L). The design of this heat cable type is based on a stranded or spirally wrapped heat conductor which is covered by the insulation. On top of this this insulation is a protective braid (e.g. ELKM-AE). To ensure a higher mechanical protection, there are variants with an additional outer jacket available (e.g. ELKM AG-L). Series heating cables are highly flexible and designed for temperatures up to 900 °C.
Heating tapes are mainly used for applications that require high flexibility and power output. The design is similar to the series resistance cable, with the difference that they are placed double inside an additional insulation and can therefore also provide more power output. Due to their design, heating tapes are more resistant and optimally protected while at the same time being particularly flexible. They are often used for electrical trace heating on tanks and vessels.
In general, each heating cable and heating tape is operated with appropriate measuring and control technology. As an alternative without temperature control, we can also offer various self-regulating heating cables. We will be happy to advise you in order to find the best solution for your application!
We develop complete solutions for processes in production, storage, handling, and transport. Our engineers are committed to understanding your exact technical requirements. Their pride is to develop the best possible heat tracing solution.
eltherm designer provides the tools to calculate, select and plan EHT systems and solutions for vessels and tanks. Selecting the appropriate eltherm trace heater, picking the associated accessories, and calculating key elements of EHT design have never been easier. This software is provided free-of-charge.
This software is provided free-of-charge.