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Self-RegulatingTrace Heaters

ContentFrom Process to ProductThe eltherm Story From A to ZYour One-Stop-Shop Self-RegulatingTrace Heaters Selection GuideLow Temperature Selection GuideMedium Temperature Selection GuideHigh Temperature DatasheetsSelf-Regulating Trace Heaters AccessoriesSelf-Regulating Trace Heater System ApplicationsSelf-Regulating Trace Heaters Design GuideSelf-Regulating Trace Heater System QuestionnaireElectrical Heat Tracing on Pipelines At Your Serviceeltherm globally 2Self-Regulating Trace Heaters468101213143646485054„Understanding the application andfinding the most efficient, reliablesolution is our daily challenge“Our specialists for applications with Self-Regulating Parallel Trace Heaters: Benjamin Knuff, Michelle Schmid and Mohamed Sellami.www.eltherm.com3

1423eltherm in Burbach, Germany1 Production facility I2 Administration, application engineering3 R&D, international sales, eltherm Academy4 Production facility IIFrom Process to ProductThe eltherm StoryFounded in 1991 in Burbach, Germany, eltherm has developed into a global engineeringsolution provider with own production facilities and a one-stop-shop for electrical heat tracingproducts and systems. The company has attained worldwide recognition as a turn-key partnerfor engineering, design, installation and commissioning of electrical heat tracing for complexindustrial plants and facilities.With its own comprehensive production facilities for all types of heating cables and accessorieseltherm has built up the engineering expertise to become one of the leading manufacturers ofelectrical heat tracing systems in the world.Besides frost protection and temperature maintenance applications up to 900 C, eltherm isthe competent partner for complete system solutions like heating whole chemical or otherindustrial plants. eltherm proved its potential and expertise in different industries such as oiland gas, power plant, construction, automotive and food.4Self-Regulating Trace HeatersPortfolio FocusWe provide a comprehensive range of electrical heat tracing products, systems and solutions from A to Z. Your One-Stop-Shop.Customer FocusOur focus on the benefits to our clients sets us apart from competitors. We understand and solve our clients‘ needs withtechnological passion.Technical FocusWe specialise in electrical heat tracing. That is our core competence and inspiration.Global FocusWe are a global engineering company with our own production facilities, serving international markets and projects from13 locations on 5 continents – and with a staff force of 270.www.eltherm.com5

From A to ZYour One-Stop-ShopSeries Resistance Trace Heatersfor freeze prevention and process temperatures in industrial plants and facilities.Applications up to 900 C.ApplicationsTemperaturemaintenanceFreeze preventionSelf-Regulating Trace Heatersfor freeze prevention and temperature maintenance in industry and building & construction.Applications up to 250 C.PipelinesValves, pumpsMineral-Insulated Trace Heatersexclusively manufactured and finished from Alloy 825 or high-quality stainless steel. The unique“Clean Laser Seal“ Technology (CLS) guarantees a homogenous, 100% stable system and reliablefunction up to 700 C.Tank containerSilos, vessels, tanksOpen areaRailwayAntennaSpecial solutionsParallel Resistance Trace HeatersParallel trace heaters with constant wattage output and a single end power input.For applications in hazardous and non-hazardous locations.Heated Analytic, Pressure and Loading Systemsfor reliable and safe transport of pressurised or non-pressurised fluids and gases without temperature loss, up to 450 C.Heating Mats and Jacketscustom-engineered and tailor-made, for heating valves, pumps, drums, barrels, hobbocks andflange covers, up to 450 C.Power and Control Panelsincluding temperature sensors, display and operating devices, monitoring and controls plusaccessories for reliable, safe functioning.Your scope of application is not included? We will advise you individually.Accessoriesfor safe and effective assembly and operation of complete heat tracing systems in facilities fromsmall to large.6Self-Regulating Trace Heaterswww.eltherm.com7

At a GlanceBenefits Self-regulating withadaptable output Various temperature ranges Demand-orientated outputgradingHigh chemical resistance No temperature limitationrequired (Ex-area)Easy to install Can be cut to length offthe rollFast connection with El-ClicDesignAOAFBOBFBOTSelf-RegulatingTrace HeatersSelf-regulating trace heaters consist of two parallel bus wires embedded in a heating matrix doped with carbon particles. 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 physicalproperty means that the heater will never overheat, can be assembledcrosswise and can be operated without a temperature limiter.Moreover, selected ELSR heating cables are approvedfor use in hazardous areas.ChecklistThe Self-Regulating Trace Heating SystemApplicationThe ELSR (eltherm-self-regulating) trace heater is used for freeze prevention and temperaturemaintenance on vessels, pipes, valves, etc. It may be immersed in fluids. For use in aggressive environments (e.g. in chemical or petrochemical industry), the trace heater is coated with a specialchemically resistant outer jacket (fluoropolymer), option “BOT”.DesignA wide selection of self-regulating heater designs to handle almost any application, includingservice in harsh conditions and corrosive environments.A Trace HeaterF Fasteners and Self-adhesive Tapes, FoilsB Power Connection KitG Insulation BushingC End Termination KitH Warning SignD Junction BoxI Temperature ControllerE Pipe Mounting BracketJ Temperature SensorIGDEAO Aluminium foil with a thermoplastic outer jacket. Trace heater for all low-temperature andJAmedium-temperature applications, particularly easy to assemble.ApprovalsCBO Protective braid with a thermoplastic outer jacket. Trace heater with protective tin-platedcopper braid for all low-temperature and medium-temperature applications. Approvals for USA / CanadaFind more in our specialproduct brochureBOT Protective braid with fluoropolymer outer jacket (Teflon). Trace heaters with fluoropolymerouter jacket for use in aggressive chemical, oil and fuel environments*.AF Aluminium foil and outer jacket approved for potable water. Special trace heaters designedfor use inside potable water lines in Freeze prevention (-M) applications.HBBF Protective braid and outer jacket approved for potable water Special trace heaters withrobust protective braid for water and drinking water lines.8Self-Regulating Trace HeatersFELSR-N.1. Nominal voltage 110 VELSR-N.2. Nominal voltage 230 VWe also offer trace heaters with braid only, without outer jacket, upon request.*A detailed list of chemical resistances is available online.This is just a schematic overview, not an installation instruction.For detailed information, please contact our engineers.www.eltherm.com9

Selection GuideLow TemperatureTypeELSR-NELSR- LSELSR-MLow TemperatureLow ventionTemperaturemaintenancePipelinesValves, pumpsFreezepreventionSilos, vessels, tanksSelf-regulating trace heaters for freeze prevention and temperature maintenance in lowertemperature ranges, predominantly in industrial applications. ELSR-N and -LS are approvedfor use in hazardous areas. The BOT version of ELSR-N is resistant to aggressive chemicals, oiland fuel. ELSR-M is very flexible and ideal where small heater dimensions are required.FreezepreventionPipelinesSpecial solutionsELSR-M-AF/BF is suited for freeze prevention in pipes andpipelines with seasonal exposure. Typical applications arewater supply systems and sanitary facilities on building sites,outdoor events, winter markets etc.The ELSR-R line is used where its round geometry facilitatesinstallation in sealing and door profiles. Typical applicationsare doors and gateways to cold-storage facilities, cold waterlines in beverage production and breweries.Maximum maintaintemperature65 C65 C65 C65 C65 CMaximum exposuretemperature (de-energized)80 C80 C65 C65 C65 CNominal output at 10 C10W/m20W/m30W/m40W/m10 W/m15 W/m25 W/m10 W/m15 W/m10 W/m19 W/m27 W/mMax. Heating circuit lengthat 10 C, 16 ampere, 230 V177,0m109,0m83,0m57,0m196.0 m160.5 m103.0 m126.5 m105.5 m89.5 m102.0 m32.0 mHazardous Areas14Page10Self-Regulating Trace Heaters16182022www.eltherm.com11

Selection GuideMedium TemperatureTypeELSR-WHigh TemperatureELSR-RampELSR-FHPELSR-HELSR- aintenancePipelinesSilos, vessels, tanksFreezepreventionOpen areaELSR-W is employed for temperature maintenance on hot water pipelines and fat disposallines in canteens or commercial kitchens. It is also used for bacteria and legionella preventionin water lines. ELSR-Ramp for freeze prevention is specially designed for concrete ramps andoutdoor surfaces. ELSR-FHP was specially developed for frost heave protection in foundations,for instance in LNG terminals.TemperaturemaintenanceValves, pumpsSilos, vessels, tanksThe ELSR-H, -SH and -SHH high temperature trace heater range is designed for temperature maintenance in industrial processesand applications in hazardous areas. The trace heaters’ high chemical resistance allows them to be installed in environmentswith exposure to aggressive influences.Maximum maintaintemperature80 C80 C65 C (ELSR-FHP-23)80 C (ELSR-FHP-38)120 C165 C250 CMaximum exposuretemperature (de-energized)100 C100 C80 C (ELSR-FHP-23)110 C (ELSR-FHP-38)210 C250 C250 CNominal output at 10 Cwater supply lines9 W/m 13 W/mat 55 C at 65 CMax. Heating circuit lengthat 10 C, 16 ampere, 230 V113.0 mfat/oil22 W/mat 40 C73.5 m50 W/mat 10 C110 W/mat 5 Cat -10 C28.0 m23 W/mat 5 C38 W/mat 5 456075W/m W/m W/m W/m W/m W/m W/m W/m W/m W/mat -5 C48.5 mat -5 C36.5 m193.0m158.0m122.0m82.0m55.0m41.0m33.0m172,0 80,0mm58,0m30,0m27,0m76.0 52.0 38.0 24.0 14.0mmmmmat 10 AHazardous Areas24Page12Self-Regulating Trace Heaters2628303234www.eltherm.com13