SELF-REGULATING TRACE

HEATERS

Self-regulating heat cables

Self-regulating heat cables are a part of our wide product range. Whether as freeze prevention to keep your pipeline or medium frost-free or for temperature maintenance - we have got the right solution for your application. With our ELSR-series (ELtherm-Self-Regulating) we offer you a self-limiting heating cable for different ranges and temperature classes. The main advantage: self-regulating heat cables can be cut to length off the roll and have a constant power per meter. Furthermore, they are very easy to install.

  • Low Temperature: Up to 80 °C
  • Medium Temperature: Up to 110 °C
  • High Temperature: Up to 250 °C

Benefits

  • Self-regulating with adaptable output
  • Choose between different temperature ranges (low, medium and high temperature)
  • Demand-orientated output grading
  • High chemical resistance
  • No temperature limitation required (important in Hazardous Areas)
  • Easy to install
  • Can be cut to length off the roll
  • Connection by plug-in connectors

Design

BO

AO

BOT

AF

BF

Wide range of industries

A self-regulating heat trace cable is applied in a wide range of industries. From heating a sugar silo to prevent condensation, through to gutter heating – we will find an individual solution for your requirements. A self-regulating heating cable is planned individually and tailor-made for you by our engineers. For Example: Via a pipeline, service water passes through a hall. To protect the water from frost in winter, the pipelines are to be heated. This prevents the pipes from freezing without having to heat up the entire hall. The ELSR-N heating cable (e.g.) is suitable for this purpose.

Typical applications in:

  • Chemistry and petrochemistry (ELSR-N,-LS, -H, SH, -SHH) 
  • Food processing industry (ELSR-N,-LS, -M) 
  • Maritime and offshore (ELSR-N,-LS) 
  • Potable water pipes and flexible tubes (ELSR-M-AF/BF) 
  • Open area (ELSR-Ramp) 
  • Cryogenic storage tanks (ELSR-FHP) 
  • Oil and Gas (ELSR-H, -SH, SHH)

What is a self-regulating heating cable and how does it work?

Self-regulating or self-limiting? These terms are often used as synonyms, with self-limiting most accurately describing how it works. Self-limiting heating cables consist of two parallel bus wires embedded in a heating matrix doped with carbon particles. Above this is the insulation and (depending on the design) aluminium foil or protective braid and finally the outer jacket. When the temperature rises in operation, molecular expansion increases the distance between the carbon particles. The resistance increases and output drops. When temperatures fall, this process is reversed and output increases. This procedure regulates or limits the heat depending on the ambient temperature and prevents overheating of the trace heating.

Do you need a temperature controller?

Due to the way the cable works it eliminates the need for regulation with additional accessories. Nevertheless, self-regulating heat cables can also be operated with the appropriate measurement and control technology (e.g. ELTC-14). By means of a control system, the cables are not permanently switched on and therefore also require less power. We will be happy to discuss with you whether an operation with or without a control system is the right choice for your application. Moreover, selected ELSR heating cables are approved for use in hazardous areas and we can offer a specific product range for the USA and Canada as well.

Where a self-limiting heating cable can be used

The ELSR (eltherm-self-regulating) trace heater is used for freeze prevention and temperature maintenance on vessels, pipes, valves, etc. It may be immersed in fluids. Equipped with a chemicallyresistant protective jacket* (see “BOT” version), pipe heating is not only possible inside a water pipe, but is also in aggressive environments. Further information on nominal voltage, bending radius or ambient temperatures can be found on the detailed web pages of the products. There you will also find further documents such as data sheets and approvals / certificates. Feel free to check out our youtube channel for assembly instructions as well.

*List of chemical Resistance for Self-Regulating Trace Heaters

Approvals

ABS
ATEX
CSTB
IECEx

INMETRO
KTL
KTW
NEPSI
Northamerica
nordische Länder
SEV
Ukraine
VDE
EAC
3D rendering of a pipe with self-regulating heating cables.

Trace Heater

ELSR-N, ELSR-LS, ELSR-M, ELSR-R, ELSR-W, ELSR-H

Connection Kit

e. g. El-Clic-P (or ELVB-...)

End Termination Kit

EL-EC...

Junction Box

e.g. ELAK-RS

Pipe Mounting Fitting

ELMW-..., ELB-...

Fasteners and Self-adhesive Tapes, Foils

ELB-...

Insulation Bushing

ELISD-...

Warning Sign

EL-WS...

Temperature Controller

ELTC-14

Temperature Sensor

ELTF-...

  1. Trace Heater:

    ELSR-N, ELSR-LS, ELSR-M, ELSR-R, ELSR-W, ELSR-H

  2. Connection Kit:

    e. g. El-Clic-P (or ELVB-...)

  3. End Termination Kit:

    EL-EC...

  4. Junction Box:

    e.g. ELAK-RS

  5. Pipe Mounting Fitting:

    ELMW-..., ELB-...

  6. Fasteners and Self-adhesive Tapes, Foils:

    ELB-...

  7. Insulation Bushing:

    ELISD-...

  8. Warning Sign:

    EL-WS...

  9. Temperature Controller:

    ELTC-14

  10. Temperature Sensor:

    ELTF-...

Visiting from the US or Canada?


The self-regulating heating cable ELSR-N-BO for freeze prevention and temperature maintenance in the low temperature range of industrial applications.

ELSR-N

The versatile self-regulating heating cable ELSR-N is suited for freeze prevention and temperature maintenance in the…

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The self-regulating heating cable ELSR-LS-BO for temperatures up to 80 °C.

ELSR-LS

The versatile self-regulating heating cable ELSR-LS is our ‘light’ version for temperatures up to 80 °C. This heating…

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The self-regulating heating cable ELSR-M-BO for short heating circuits with temperatures up to 65 °C.

ELSR-M

The heating cable ELSR-M is very flexible and is used for special applications where installation dimensions are needed…

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The self-regulating heating cable ELSR-R is for round geometry and facilitates installation in sealing and door profiles

ELSR-R

The ELSR-R line is used where its round geometry facilitates installation in sealing and door profiles. Typical…

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The self-regulating heating cable ELSR-W-BO is for temperature maintenance on hot water pipelines and fat disposal lines

ELSR-W

ELSR-W is employed for temperature maintenance on hot water pipelines and fat disposal lines in canteens or commercial…

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The self-regulating heating cable ELSR-Ramp for freeze prevention is specially designed for concrete ramps and outdoor surfaces.

ELSR-Ramp

ELSR-Ramp for freeze prevention is specially designed for concrete ramps and outdoor surfaces.

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The self-regulating heating cable ELSR-FHP for freeze prevention underneath the foundations of cooled storage areas.

ELSR-FHP

Freezing and frost heave may occur underneath the foundations of cooled storage areas. This can result in a deformation…

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The self-regulating heating cable ELSR-H for temperature maintenance in industrial processes and applications in hazardous areas.

ELSR-H

The ELSR-H high temperature trace heater range is designed for temperature maintenance in industrial processes and…

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The self-regulatinge heating cable ELSR-SH is designed for temperature maintenance in industrial processes and applications in hazardous areas.

ELSR-SH

The ELSR-SH high temperature trace heater range is designed for temperature maintenance in industrial processes and…

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The self-regulating heating cable ELSR-SHH has a high chemical resistance.

ELSR-SHH

The ELSR-SHH high temperature trace heater range is designed for temperature maintenance in industrial processes and…

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The self-regulating heating cable ELSR-M-BF for freeze prevention in pipes and pipelines with seasonal exposure.

ELSR-M-AF/BF

ELSR-M-AF/BF is suited for freeze prevention in pipes and pipelines with seasonal exposure. Typical applications are…

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Tool Box

The new eltherm tool box gives you everything you need to connect and terminate eltherm Self-Regulating Trace Heaters…

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Engineering your Advantage

Your Processes in Expert Hands

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 2.01

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.

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Contact Person

Cristina Talia

eltherm GmbH (Headquarters)
Ernst-Heinkel-Straße 6-10
57299 Burbach
Germany

Phone: +49 2736 4413-8284
Fax: +49 2736 4413-50

Christian Hemker

eltherm GmbH (Headquarters)
Ernst-Heinkel-Straße 6-10
57299 Burbach
Germany

Phone: +49 2736 4413-8280
Fax: +49 2736 4413-50

On the move globally
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Phone: +49 (0) 27 36 / 44 13-0

Fax: +49 (0) 27 36 / 44 13-50

E-mail: info@eltherm.com

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