ABOUT
Introduction
Tempsens offers the open coil heater and the sinusoidal strip heater as cost-effective solutions for high temperature industrial heating. These elements consist of coiled resistance wire or strip, made from Ni-Chrome alloys or Kanthal, mounted on a supporting insulation body such as a ceramic tube, ceramic fiber board, or insulation refractories.
These heaters provide a very short warm-up time and are very energy efficient because of the direct transfer of heat to the target material through radiation (without insulation) by using watt densities of up to 3 W/cm², with operating temperatures of up to 1100°C. The open coil heater and sinusoidal strip heater from Tempsens are designed for use in the most demanding furnace and industrial environments. Both heaters can be utilized with SSR, SCR, relay, and RTD control types and are available in custom lengths and termination configurations.
About Open Coil and Sinusoidal Strip Heaters
Key Features of Open Coil and Sinusoidal Strip Heaters
| Parameter | Specification |
|---|---|
| Heating Wire/Strip | Ni-chrome Alloys or Ferritic Alloys FeCrAl |
| Watt Density | Up to 5 W/cm² |
| Operating Temperature | Up to 1100 °C |
| Length | Customize |
| Controls | SSR/ SCR/ Relays/ RTD |
| Terminations | Customized |
| Fixing | Mount on the ceramic tube, ceramic fiberboard, or insulation refectories. |
Benefits of Open Coil and Sinusoidal Strip Heaters
- Direct radiation heat transfer provides rapid heat up times
- High output with watt densities reaching as high as 3 W/cm²
- Operating temperature range of 1100°C
- Low maintenance cost & easy to replace elements
- Do not require additional accessories or supplies, which reduces overall costs
- Full support for SSR & SCR switching for precision control
- Mountable on ceramic tubes, fibreboard, & refractory materials
- 360° full heat distribution due to coiled nozzle design; will not have hot spots
- Custom length available for specific use cases.
Applications of Open Coil Heaters and Sinusoidal Strip Heaters
- Industrial direct heating of furnaces and kilns.
- Applications for heating in muffle/holding/peat/belt type furnaces etc.
- Heating of air and air handling systems in industry.
- Vacuum applications requiring application of heat.
- High temperature laboratories and R&D applications.
- Indirect heating of heat sensitive materials.
- Providing heat via nozzles with distributed wattage.
For more information related to Open Coil Heater you can refer to our blog “Why Open Coil Heaters are best choice for the industry?”
Why Tempsens Is the Leading Manufacturer of Open Coil and Sinusoidal Strip Heaters?
- Over three decades of thermal engineering expertise.
- Customized open coil heater designs for each application.
- In-house capability for sinusoidal strip heater fabrication.
- Exported to more than 75 countries across global industries.
- Dedicated application support from Tempsens technical teams.
FAQ
Frequently Asked Questions
Find answers to frequently asked questions related to Open Coil and Sinusoidal Strip Heaters.
An open coil heater is made of coiled heating element wire that has been arranged into a helical shape, and a sinusoidal strip heater is made of flat resistance wire that has been shaped into a wavy pattern. Although both can be used for heating applications in furnaces and air, they differ in geometric shape and watt density distribution.
Open coil and sinusoidal strip heaters provide faster heat up times than enclosed or sheathed heater designs because they transfer heat by radiance directly into the surrounding material (air or water) without an insulation layer between them.
Whether an open coil heater produces even or concentrated heating is determined by the element’s winding density and coil spacing. With a compactly designed coiled nozzle, an open coil heater enables full 360° heat output, with an optional way for evenly distributing the output wattage.
