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Useful information for designing silicone heaters
Flexible silicone heaters
  • Operating temperature – 60 to + 240°C
  • Dimensions up to 3000 x 1000 mm possible
  • Drill holes, cut-outs, terminal design and temperature controller in accordance with customer requirements
  • Useful information for designing silicone heaters
    Temperature: -60 bis +240°C (please note the restrictions under the header fastener types)
    Operating voltage: 6 – 400V, AC/DC (single- or three-phase), up to 750V on request
    Heating output: 0.05 – 3 W/cm² (from 0.45 W/cm² we recommend a temperature controller)
    Maximum length: 3000mm
    Maximum width: 1000mm
    Thickness: 1,5 – 6mm
    Electrical connection: Single cores, cable, plug-in contacts
    Temperature controller: Depending on design
    Installation, fasteners: Depending on design
    High-voltage resistance: Approx. 24 KV/mm (with standard material)
    Protection against moisture: On request splash proof XP X4, higher safety classes on request
    Series test: In accordance with DIN EN 60335-1 (VDE 0700-1) and DIN EN 50106 (VDE 0700 Part 500)
    Approvals: In accordance with DIN EN 60335-1 (VDE 0700-1) 2007-02
    Physical properties
    Temperature resistance: -60 to + 240°C
    Thermal conductivity ISO 8301: approx. 0.27 W/m K (with standard material)
    Weathering and aging resistance: Very good
    Ozone resistance: Very good
    Steam resistance: Good to approx. 130°C or 2.5 bar
    Vulcanising
    Connections: Aluminium, Stainless steel, Steel, Various metals
    Installation surface: Any (depends on tool)
    Temperature range: -60 to + 240°C
    Bonding times and installation instructions: Attached in the factory
    Self-adhesive foil
    Connections: Metals, Various plastics, Ceramic 
    Installation surface: Flat or cylindrical 
    Temperature range: 0 to + 150°C
    Bonding times and installation instructions: Instructions for using self-adhesive foil
    Sticking with silicone cold vulcanisation
    Connections: Metals, Various plastics, ,Galss, Ceramic any
    Installation surface: Any 
    Temperature range: -60 to + 180°C
    Bonding times and installation instructions: Instructions for using silicone adhesives
    Pressing on using pressure plates
    Connections: Any
    Installation surface: Flat 
    Temperature range: -60 to + 240°C
    Bonding times and installation instructions: Place the flexible heater between the function part and the pressure plate. Alternative: vulcanise the heater on the pressure plate.
    Instructions for use
    Clamping with tension springs, tying on
    Connections: Any
    Installation surface: Cylindrical 
    Temperature range: -60 to + 240°C
    Bonding times and installation instructions: Simple installation on site, above all if the heated function parts has to be replaced.

    Application information

    • compressive load on the heater: max. 50 N/cm² two-dimensional pressure
    • With container heaters with changing levels the temperature controller or temperature sensor must be attached to the upper side of the heater (= hottest position when the level drops)
    • Depending on the heater design, the minimum bending radius is 30 mm
    • Silicone heaters must not be bent
    • The heaters must not be cut or mechanically damaged
    • The heaters may only be operated with the prescribed voltage
    • Incoming goods inspections are not carried out for materials that are provided, because we assume that these parts are supplied in a perfect condition. Materials must be provided not less than three weeks before the confirmed delivery date for the heaters, so that this date can be complied with.
    Maximum temperature loads
    • The maximum temperature load for silicone heaters is 240°C
    • The maximum temperature load for silicone heaters with self-adhesive foil is 150°C
    To make sure that the heater element does not overheat a suitable temperature controller is suggested during the planning stage, or supplied on request. With power densities > 0.45 W/cm² we recommend additional security using a thermal cut-out.
    The temperature that can be reached with a heater element depends on the following factors:
    • Ambient temperature
    • Thermal conductivity of the medium/material to be heated
    • Insulation of the heater element and the heated medium
    • Radiant emittance (heat loss through eternal influences)
    • Thermal conductivity of the heater carrier
    • Flow rate of the medium to be heated
    •  

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