Technosoft Consultancy & Services
Technosoft Consultancy & Services
South Dum Dum, Kolkata, West Bengal
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Marathon Heaters

Offering you a complete choice of products which include marathon duct heater, marathon strip heater, flanged immersion heater, bundle rod heater and mineral insulated heater cables.

Marathon Duct Heater

Marathon Duct Heater
  • Marathon Duct Heater
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Product Details:

Voltage120, 240, 300, 480, 600 V
BrandMarathon
Sheath MaterialSteel, Copper, Stainless Steel, INCOLOY
Watt DensityUp to 40 W/in2
WattageUp to 2 MW
ControlsSSR/ SCR/ Digitally Controlled
Diameter of Tube0.260, 0.315, 0.375, 0.430, 0.475 mm
Sheath Length11 - 240 inches
Process temperatures-29 to 650 Degree C

Duct heaters are heat transferring devices which are an assembly of heating elements mounted in a frame or duct. Preferably used for non-pressurized air-heating systems, there are three types of duct heaters available: open coil, tubular or finned tubular heating elements that are either flanged or inserted in the duct. The individual elements are removable through the housing of the assembly, which eliminates the need to pull the complete heater from the ductwork. This reduces downtime costs because the heating elements can be replaced individually. Being the most easily adaptable heating solution, they are easily installed in applications requiring a wide range of temperature versus air flow combinations and offer greater reliability, energy efficiency, quicker response time and reduced infiltration from the air steam. Duct heaters can be equipped with a temperature control system and wired in various power configurations

Application:
  • Heating of platens and molds
  • Air dryers
  • Load Banks – Resistive
  • Industrial Ovens
  • Industrial Cabinets
  • Preheating
  • Reheating
  • Laboratory Testing

Features:
  • Provide great mechanical strength
  • Not prone to moisture and dust
  • Quite easy to mount
  • Durable and easy maintenance
  • Rugged construction eliminates hazard of electric shock
  • Reinforced frame allows for minimum vibration and elevated temperatures
  • Typically used for outdoor applications or in environments that are too harsh for open coil elements
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Marathon Strip Heater

Marathon Strip Heater
  • Marathon Strip Heater
  • Marathon Strip Heater
  • Marathon Strip Heater
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Product Details:

VoltageUp to 600 V AC
BrandMarathon
Sheath MaterialIron, Steel, 304 Stainless steel, Aluminum, Zinc coated steel
Watt DensityUp to 100 W/in2
Operating temperatureUp to 1200 DegreeF
Length5 1/2 to 48 inches
Width1 1/2 inch

Strip heaters, commonly called component or clamp heaters, based on the principle of convection air heating, use surface area to transfer heat effectively. Using most advanced heat technologies, strip heaters are an outstanding industrial heating product. It comprises of a heating element, a protective sleeve or sheath, and mounting hardware and can be clamped or bolted onto objects or solid surfaces. A coiled nickel chromium element wire is placed in the center of the heater. The element wire is then embedded in magnesium oxide (MgO)-based insulation and compacted into a solid mass creating excellent heat conductivity and high dielectric strength. The heater is then enclosed in desired sheathing. Suitable to work in 500 degree F temperatures, magnesium oxide is used for increasing efficiency. Temperatures can be controlled by using a temperature controller such as a thermostat. When using strip heaters, proper sheath material for resisting rusting or oxidation and suitable watt density of the element should be selected keeping in mind the application. These can be shaped and sized according to the use. A moderately inexpensive way of heating, strip heater is a tremendous solution to meet any budget. 

Features:
  • Easy and economic to install
  • Corrosion and vibration resistant
  • Durable, versatile and easy to control
  • Uniform Heat Distribution
  • Suitable for higher temperatures

Application:
  • Surface Heating
  • Process Air Heating
  • Winterizing
  • Space Heating
  • Food warming
  • Packaging and sealing
  • Laboratory equipment
  • Autoclaves and ovens
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Flanged Immersion Heater

Flanged Immersion Heater
  • Flanged Immersion Heater
  • Flanged Immersion Heater
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Product Details:

BrandMarathon
VoltageUp to 600 V
Sheath MaterialCopper, Steel, 304 Stainless steel, INCOLOY
Watt Density6.5, 15, 23, 45, 75, 100 W/in2
Flange MaterialCarbon steel, Stainless steel
Flange size2 to 42 inches
Flange Rating150, 300, 600 or 900 lb pressure class ANSI
Diameter0.260", 0.315", 0.375", 0.430" or 0.475", 0.625"
Terminal EnclosureIP 23 Standard Terminal Box, IP 66 Water Proof Terminal Box
ControlThermocouple, RTD, Thermostat, Digitally controlled
Immersion LengthUp to 240 inch

Flanged industrial immersion heaters are amongst the most popular heaters owing to wide customization, easier installation and operations in stringent environment. Made by brazing or welding flange with several hairpin elements or bulge tubular elements, these are designed for heating chemical, petroleum and water based applications specially heat transfer fluids, medium and lightweight oils and water in tanks and pressure vessels. A thermocouple or RTD is often used within the bundle of elements to maintain the desired target temperature. Extra wiring boxes to make electrical connections are provided with it. Tubing known as a thermowell is used to protect thermocouples and heating elements. Temperature readings are then transmitted to a control unit that regulates power. Although, they occupy a small space, but have a large heating element which is perfect for applications which require high wattage heating. This is one of the most efficient forms of process heating with nearly 100 percent efficiency.


Different alloys and materials can be used to suit specific applications. For instance, steel flanges are used for deionized water, lubricant oils, heavy and light oils, waxes as well as mildly corrosive liquids and low flow gas and water tank heating.  Stainless steel flanged heating elements are used with mild and severe corrosive solutions and military applications. The sheath materials used can be steel, stainless steel, copper as well as exotic alloys such as incoloy. 

Features:

  • 100% efficient and versatile
  • Easy installation, control and maintenance
  • Designed and built for safety
  • Perfect for higher kW output applications

Some of the typical applications of flanged immersion heaters with their specific attributes are shown in the table below.

Application:

  • Clean water, hot water storage, portable water, freeze protection of liquid
  • Hot water, steam boilers, mildly corrosive solutions (in rinse tanks, spray washers), vapor degreasers
  • Oils (light or medium), Gases, hydraulic oil, stagnant or heavy oils, lubricating oil, crude asphalt
  • Process water, soap and detergent solutions, Boiler and water heaters, deionized water, chemical baths
  • Severe corrosive solutions, demineralized water

Specification:

Different sheath materials used have different operating temperatures and watt densities. While selecting the material these values must match your criteria. Table shown below will help to make an ideal selection.

 Sheath Material

Maximum operating temperatures

   Maximum Watt Densities

 

 

           °F

             °C

       W/in2

INCOLOY

1600

870

100

304 stainless steel

1200

650

100

Steel

750

400

30

 

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Bundle Rod Heater

Bundle Rod Heater
  • Bundle Rod Heater
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Product Details:

Voltage240 or 480 V AC
BrandMarathon
Heating Element MaterialNiCr / FeCrAl alloy
Wattage45 kW / 100 kW
Max. Temperature1200 Deg C / 1425 Deg C
Diameter68 to 170 mm
PhaseSingle phase or three phase

As the name suggests, bundle rod heater consists of circular ceramic beads that hold the heating elements. They are designed for long life and maintenance free operation. The elements can be provided in almost any length but the standard dimensions available are 68 to 170 mm (2.6 to 6.6 inch). These heaters can be used as standalone elements or inside radiant tubes. Because of the ingenious design, Bundle rod heating elements deliver a much higher power (up to 100kW) than conventional cartridge heaters. In combination with the radiant tubes, a system is created which delivers high power, is rugged, versatile and needs low maintenance. Designed & manufactured in low voltages for faster heating in order to achieve temperatures quickly, these heaters can be mounted horizontally or vertically. Either NiCr alloy or FeCrAl alloy can be used as heating element. For temperatures up to 2100°F (1150°C), Austenitic (NiCr) alloy (80/20 or 70/30) and for temperatures up to 2597°F (1425°C), Ferritic (FeCrAl) alloy can be used. A comparison between bundle rod and cartridge heaters shows their effectiveness:
Superior Power OutputBundle rod elements, with a higher power output, leads to major saving in cost and maintenance. Also when combined with Kanthal radiant tubes, they give highest power rating (up to 100 kW) as compared to any other heater.
Easy installationDue to its ruggedness and versatility, bundle rod elements are easy to install and replace. Compatibility with radiant tubes allows installation to be either horizontal or vertical depending on the application. Easy repair and high temperature performance gives it an edge over others. Custom designed for the voltage and wattage required, bundle rod heaters are used in heat treat furnaces and die casting machines to molten salt baths and incinerators. With radiant tubes they can be used in high velocity convection furnaces and sealed quenched furnaces. They are also useful in converting gas-fired furnaces to electric heating.
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Mineral Insulated Heater Cables

Mineral Insulated Heater Cables
  • Mineral Insulated Heater Cables
  • Mineral Insulated Heater Cables
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Product Details:

BrandMarathon
Sheath MaterialAlloy 825, Stainless Steel
Watt DensityUp to 50 W/in2
Process Temperature1100 DegreeF
Exposure Temperature1400 DegreeF
Maximum Voltage600 V

Mineral insulated heating cables are series type heating cables and consist of one or two conductors embedded in a highly dielectric magnesium oxide insulation surrounded by a metal sheath. High nickel content Alloy 825 is renowned for its use as sheath material in high temperature applications, and corrosive environments. This alloy has superb resistance to pitting, chloride stress, and acid and alkali corrosion. Stainless steel can also be used as sheath. Highly compacted Magnesium Oxide provides insulation of the resistance wire for voltages up to 600V. Completely sealed sheath protects the MgO from moisture & contamination. MI heating cables are series-type heating cables and appropriate for temperatures up to 1022°F (550°C) and exposure temperatures up to 1200°F (650°C). At lower temperatures, watt densities of up to 50 W/Ft can be designed. It provides superior strength in dynamic cut through, crush, and corrosion tests and provides rugged and reliable heat tracing for a variety of demanding applications. MI heating cable sets are supplied factory terminated and ready to install. They include a heating section and a non heating cold lead section. They are supplied in fixed lengths, so determining and ordering the correct cable length is critical. The cold lead cable is connected to a junction box, which in turn is connected to the power supply.
MI heating cable is the ideal choice when an application's temperature and power output requirements exceed the capabilities of self-regulating and power-limiting heating cables.
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Raj Shah (CEO)
217, Gourinath Shastri Sarani, Shyam Nagar Road
South Dum Dum, Kolkata- 700055, West Bengal, India



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