Stainless steel cartridge heater

Incoloywaterprooftubular

Product description
A high-density cartridge heater provides very high power relative to its size and ensures uniform heat distribution across the heater casing. These heaters are designed for harsh industrial conditions including process temperatures up to 750°C, vibration, shock and frequent thermal cycling.

Applications

• Tool heating and hot plates
• Solid body and liquid heating
• Casting, melting and curing processes
• Soldering and bonding
• Heating of medical and laboratory equipment

Construction and manufacturing
The heater is manufactured by tightly winding resistance wire around a cylindrical ceramic core. Multiple power zones can be created by positioning the resistance wire accordingly. The assembly is inserted into a metal sheath and filled with pure magnesium oxide as insulation, then compressed to the required outer diameter and tolerance.

• Welded bottom (opposite leads exit)
• Casing of stainless steel
• Insulation disc of ceramic
• Pure compressed magnesium oxide isolator
• Resistance wire of nickel/chrome 80/20
• Ceramic holder
• Ceramic fixing head
• Leads
• Ceramic sealing paste in the top

Options
High-density cartridge heaters can be fitted with built-in sensors/thermocouples and configured to be dust-proof and water-resistant where required.

Technical specification

• Surface load: up to 60W/cm²
• Working temperature: up to 750°C
• Supply: as required
• Casing materials: stainless steel AISI304, AISI316, AISI321 or Incoloy®
• TIG-welded casing for pressure up to 60kg/cm²
• Resistance wire: nickel/chrome 80/20
• Diameter tolerance: -0,02 to -0,06 mm
• Length tolerance: ±1,5%
• Power tolerance: +5% / -10%
• Hole fitting tolerance: H7
• Dielectric strength: 1500V 1/sec
• Current leakage: ≤ 0,1mA at 242V
• Optional built-in sensors: TCJ, TCK or PT100
• Optional protection class: IP67

Connections

• Standard (T1) — sealed with heat-resistant ceramic paste
• Ceramic plate (T2) — plate protrudes about 3–6 mm to prevent conductor shorting under vibration
• Terminal block (T3) — ceramic terminal block for simpler lead replacement
• Threaded connection (T4) — threaded nut for quick connection; suited for parallel connections
• One-side lead (T5) / Two-sided lead (T5b) — lead at one end or both ends
• Two-sided threaded (T6) / Two-sided threaded (T6b) — threaded on one end or both ends
• Flange (T7) — round flange for mounting, ideal for moving machines
• Bracket (T7b) — perpendicular bracket for moving equipment
• Nipple (T8) — threaded nipple for liquid heating; can withstand pressure and use a gasket
• Reinforced angle (T9) — perpendicular mounting block for easy removal and protection
• Perpendicular cable (T9 Base) — leads exit at 90° and sealed with ceramic paste
• Perpendicular protected cable (T9 PB) — protected by welded metal tube
• Angle bow (T9 Elbow) — 90° tube bow connection
• 90° right angle (T9PBe) — tube extension at 90°, compressed and filled with ceramic paste
• Antivibration (T10) — reinforced lead-end compression with diameter reduction for high-vibration use
• External (T11) — external connection types for flexible metal web and tube
• Internal (T12) — internal connection types for flexible metal web and tube

Leads and cable protection

• Nickel rods (Vn.) — nickel pins for easy lead changes; insulated layer. Temp. resistance up to 700°C
• Glass fiber leads (P.Cv.) — nickel conductors with glass fiber and silicone outside. Temp. up to 350°C
• Teflon leads (P.Tf.) — water-resistant, for high-purity requirements. Temp. up to 250°C
• Silicone leads (P.Sf.) — highly flexible for movement and vibration. Temp. up to 200°C
• Standard cable (P.Cs.) — 3-core with copper conductors. Temp. up to 200°C
• Silicone sleeve (P.Fs.) — leads inside silicone sleeve for humid environments. Temp. up to 200°C
• Ceramic beads (PSt.) — for high-temperature applications. Inner conductor nickel. Temp. up to 600°C
• Glassfiber armed sleeve (P.Fv.) — protects twisted leads and multiple conductors. Temp. up to 200°C
• Flexible metal web (P.Tm.) — galvanized steel (stainless on request). Temp. up to 500°C
• Vinkel tube (P.Tv.) — galvanized flexible tube for impact and spillage. Temp. up to 350°C
• Flexible stainless steel tube (P.Tvi.) — high protection for vibrations and viscous products. Temp. up to 600°C

Built in sensor/thermocouple

• Insulated sensor — electrically insulated from casing to avoid earth potential interference
• Grounded sensor — in direct contact with casing for fast response
• Custom sensor location — sensor placed as required for process control and precision

Characteristics / technical specifications

• Surface load: up to 60W/cm²
• Maximum working temperature: up to 750°C
• Casing materials: stainless steel AISI304, AISI316, AISI321 or Incoloy®
• TIG-welded casing pressure rating: up to 60kg/cm²
• Resistance wire: nickel/chrome 80/20
• Diameter tolerance: -0,02 to -0,06 mm
• Length tolerance: ±1,5%
• Power tolerance: +5% / -10%
• Hole fitting tolerance: H7
• Dielectric strength: 1500V 1/sec
• Current leakage: ≤ 0,1mA at 242V
• Optional sensors: TCJ, TCK or PT100
• Optional protection: IP67