Helical coil cartridge heater SWRP
Application:
Helical coil cartridge heaters are particularly suited for warming up plastic roller (cylinder) spraying nozzles used in the chemical, metal or foodstuff industry.
The devices offer high performances with even heat distribution on a very small footprint.
Features:
- Various cross-sections and dimensions
- Long service life
- High operating temperatures (up to 700°C) at the shell
- We recommend built-in thermo-couples for optimum functionability.
- Good design
Specifications and tolerances:
| Maximum effective length: | 3000mm |
| Cross sections in mm²: | 2.2 x 4.2 |
| 3.0 x 3.0 | |
| 4.0 x 4.0 | |
| Diameter tolerances: | ±0.1mm |
| Max. surface load at shell: | 15W/cm² |
| Max. voltage: | 250V |
| Power tolerance: | ±10% |
| Unheated zone min.: | 25mm |
| Shell material: | CrNi steel |
| Shell temperature max.: | 750°C |
| Resistance wire material: | NiCr 8020 |
| Insulation material electro-magnesium: | Mgo |
| High-voltage stability in the cold state: | 800VAC |
| Insulation resistance in the cold state: | min 5MΩ at 500VDC |
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