Electric coil heater

Product overview
Coil silicone heaters (Series 185) are pre‑coiled, flexible heating elements designed for small-diameter pipes and components where compact, curved heating is required. They combine silicone laminated construction with embedded resistance wire to provide uniform surface heating up to 200°C and are suitable for a range of industrial applications.

Applications

• Small-diameter pipes carrying fluid or gas
• Semiconductor processing equipment
• Frost protection of lines and fittings
• Anti-condensation on enclosures and housings
• Heat-loss maintenance for process lines

Construction and installation
Elements consist of resistance wire encapsulated between two silicone layers and laminated under heat and pressure. The product is supplied pre-coiled and remains flexible, allowing straightforward installation on curved or straight pipes. Standard fit diameters begin at Ø6.35 mm with nominal lengths up to 1020 mm; mounting up to Ø12.7 mm is supported. Custom dimensions and lengths are available on request.

Temperature control
An integrated temperature sensor can be supplied for closed-loop regulation. Sensor outputs are compatible with PID control cabinets (sensor + PID cabinet solutions available) to ensure stable temperature control in process applications.

Technical specification
Surface load: 0.26–0.3 W/cm²
Working temperature: -60°C to +200°C
Voltage: 240 V (customizable)
Fits diameters: Ø6.35 to Ø12.7 mm (customizable)
Thickness: 1.5 mm
Nominal length: designed for ~80% surface coverage
Extended length: approx. 60% surface coverage
Installation: must be connected to an electrical system protected by a residual current circuit breaker
Thermal conductivity: 0.22 W/m·K

Environmental specifications

• Very good resistance to weathering and aging
• Very good resistance to fungal and bacterial growth
• High chemical resistance to substances such as acetone, alcohol, formic acid, brake oil, acetic acid, greases, HCl 10%, H2SO4 10%, waxes and plasticizers
• Good resistance to steam up to +130°C or 2.5 bar

Standard range
Part number | Nominal length | Extended length | Supply | Power | Power density
185-2002 | 205 mm | 250 mm | 120 V | 11 W | 0.26 W/cm²
185-2003 | 375 mm | 440 mm | 240 V | 19.5 W | 0.27 W/cm²
185-2004 | 475 mm | 550 mm | 240 V | 25 W | 0.27 W/cm²
185-2005 | 612.5 mm | 720 mm | 240 V | 33 W | 0.28 W/cm²
185-2006 | 780 mm | 900 mm | 240 V | 45 W | 0.30 W/cm²
185-2007 | 1020 mm | 1150 mm | 240 V | 52 W | 0.27 W/cm²

Technical features

• Surface load: 0.26–0.3 W/cm²
• Operating temperature range: -60°C to +200°C
• Standard supply voltage: 240 V (customizable)
• Fitting diameters: Ø6.35–Ø12.7 mm (customizable)
• Thickness: 1.5 mm
• Nominal coverage: ~80% surface; extended coverage: ~60%
• Thermal conductivity: 0.22 W/m·K
• Installation requirement: use on circuits protected by a residual current device (RCD)
• Environmental resistance: excellent vs. weathering, aging, biological growth and many chemicals; good vs. steam up to +130°C / 2.5 bar