Up to 750°C, coil heaters provide a high heating profile and excellent performance in small areas. Coil heaters come in a variety of diameters and cross-sections, and they can be shaped into nearly any geometric shape in addition to being straight and coil-shaped.
Coil heaters can be stretched to meet spread wattage requirements or tightly coiled to give focused heat. Integrated thermocouples are another feature that coil heaters can include for accurate temperature control and fast reaction. The thermocouple may be terminated anywhere in the coil portion and may be of type “J” or “K.”
Coil heaters can be stretched to meet spread wattage requirements or tightly coiled to give focused heat. Integrated thermocouples are another feature that coil heaters can include for accurate temperature control and fast reaction. The thermocouple may be terminated anywhere in the coil portion and may be of type “J” or “K.” – NOBLEHEAT
| Sizes | 1.0 x 1.6, 1.3 x 2.3, 1.8 x 3.2, 2.5 x 4.3, 3.4 x 3.4 etc. |
|---|---|
| Sheath Material | Stainless steel / Incoloy |
| Maximum Sheath Temperature | 750°C |
| Maximum Wattage | 200 to 2000 Watts |
| Maximum Voltage | 415V |
| Wattage Tolerance | ± 10% |
| Resistance Tolerance | ± 10% |
| Length Tolerance | ± 5% |
| Minimum Bending Radius | Twice the Sheath Diameter/Width |
| Unheated Zone Length | 10 mm on the bottom end, 50 mm at the terminal end. Larger lengths are available on request. |
1. Nickel Chromium Resistance wire for maximum life
2. High Purity magnesium oxide fill selected for maximum dielectric strength and thermal conductivity, highly compacted for maximum heat transfer
3. Stainless steel sheath / Inconel sheath for oxidation and corrosion resistance in a wide variety of environments
4. Thermocouple for precise temperature control (type ‘J’ and type ‘K’ thermocouple)
1. The lead wire consists of high-temperature resistance wire wound around a fibreglass core for added support and flexibility
2. Silicone rubber is rugged, moisture and chemical resistant, flame retardant, have high dielectric strength.
3. Nickel Chromium Resistance wire for maximum life, evenly wound for even heat distribution. The vulcanization process is used to attach the power leads and cord sets to the heater winding.
| Wire Type | Temperature Rating | Maximum Recommended Temperature | Comments |
|---|---|---|---|
| Ultralead | 250°C | 450°C | Excellent, durable wire, good for high-temperature application |
| Teflon | 250°C | 250°C | Good dielectric strength |
| Silicon Rubber | 200°C | 200°C | Good moisture resistance |
| Braided Silicon rubber | 200°C | 200°C | The inexpensive wire is good for non-abrasive applications. |
| Fibre Glass | 400°C | 400°C | Excellent resistance to heat, flame, abrasion, oil, and chemicals. Excellent dielectric properties. |
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