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2 HotMicroCoil Heating Elements |
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Our HotMicroCoil Heaters have a varied operative range. Most important applications are nozzles for hot runner systems or hot melting nozzles.
Continuous process improvement is the guarantee for our continuously high level of quality. Hot-/ MicroCoil heaters can be supplied coiled to your requirements
or just straight to be coiled afterwards. For HotCoils it is also possible to integrate a thermocouple.
In linguistic usage occasionally these terms are used:
» coil heaters
» nozzle heating elements
» hot runner heating elements
» cable nozzle heaters
  showhide table for constructive specifications and tolerances
| CONSTRUCTIVE SPECIFICATIONS AND TOLERANCES |
| Voltage: |
up to 250 V |
| High voltage flash test (cold): |
800 V (AC) |
| Insulation restistance (cold): |
> 5 MW for 500 V (DC) |
| Leakage current (cold): |
< 0,5 mA for 253 V (AC) |
| Surface temperature: |
max. 750 °C |
| Length: |
max. 3000 mm |
| Length tolerance: |
±5% |
| Diameter tolerance: |
±0,15 mm |
| Leads: |
PTFE insulation,
permanent temperature resistant up to 260°C |
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HotCoil |
MicroCoil |
| Power tolerance (cold) |
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| Standard: |
±10% |
±10% |
| on request: |
±5% |
±2% |
| Sheath material: |
quality 1.4541 |
quality 1.4541 or 2.4068 |
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| Power density |
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| (depending on heat transfer): |
max. 15 W/cm² |
max. 10 W/cm² |
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| Resistance |
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| per meter heated length: |
20 to 1400 W |
15 to 4000 W |
| Thermocouple: |
type J/K |
not possible |
| Test: |
Following EN 60335/2/11 & EN 60204-1 |
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Products in this category |
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MicroCoils Ø 1,8 mm and 1,3 x 2,3 mm will be supplied with two transition heads and a maximum wattage of 700W as a standard. One joint transition head is possible as special execution.The types 1,8 x 3,2 mm, 1,4 x 2,4 mm and Ø 2,0 mm have a higher power density and can only be produced with one transition head. Due to the small dimensions, thermocouples can not be integrated in MicroCoil heaters. Standard connection is a 1000 mm PTFE insulated lead....
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HotCoils are available with or without integrated thermocouple. Our standard is type J (Fe-CuNi, red-blue) for working temperatures up to 750°C. Up to a wattage of 2200W HotCoils are obtainable from stock. Standard connection is a 1000 mm PTFE insulated lead with fibreglass silicone sleeve and earth lead...
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Characteristics of our HMC with reflection tube are easy mounting and variable heat distribution. Because of its direct touch and the tight fit, the heaters allows an optimal heat transmission to the nozzle. In all our HMC with reflection tube the assembly of a thermocouple is possible...
[read more]
For our nozzle heaters plenty of options are available for you. For instance, choose a protection sleeve or one of many termination options...
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Because of the hygroscopic characteristic of the used ceramic insulation materials they absorb moisture. Therefore we send our HotMicroCoil heating elements usually in air-tightly closed plastic bags. When stored unprotected in environmental air it is absolutely important to check the insulation resistance before use and - if necessary - to dry the elements (controlled start-up or drying oven)...
[read more]
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