parallax background

Customized ribbed heating elements

Electrical ribbed heaters are designed for heating air or non-corrosive gas by natural or forced convection

Request a quote!

The design is based on customer process conditions : fluid to heat (type and properties), in/out temperature, pressure, heat exchange conditions (stagnant or flowing), and environment conditions (ATEX or not, onshore or offshore, etc.).

Ribbed heaters are the best solution for convection air heating in stoves, industrial ovens, drying cabinets & facilities or air-conditioning equipement.

Reliability and robustness are key drivers for our engineers.

Product overview

  • Power from 200 W – 10 kW or more
  • Tubular heating elements in AISI 321 stainless steel equipped with zinc-coated fins
  • Rectangular or round fins
  • Mounting with crimped steel connector
  • U-shaped terminals
  • Well-designed for premises air heating or gas heating in natural or forced circulation
  • Max. sheath tube temperature:
    • 350°C for steel fins
    • 600°C for stainless steel fins (option)
  • Used for exemple in duct heaters

Advantages

  • Reliability and robustness of the heating element. High-quality raw material.
  • Different types of fins : rectangular, round, spiral fins

Operating conditions

  • Hazardous areas (ATEX/IECEx) and NEC 505
  • Onshore / offshore environment

Liquids, gas and solids

Gas

  • Air, max load 0.1 – 8W/cm² acc to sheath temp, material: 321 and speed (m/s)
  • Non-corrosive gas

Technical description

Heating elements

The watt density, tube diameter and the tube sheath are chosen to optimize the reliability and robustness (corrosion, temperature) of CETAL equipments.

Technologies

  • Tubular heating element

Tube diameter & material

  • Tube diameter: 8.5 / 10 / 13,5 / 16 mm
  • Tube material: Stainless steel AISI 304 or 321
  • Tube type: sealed tube

Manufacturing

  • 100% of the components come high quality supplier from Europe
  • 100% manufacture within CETAL factory

 

 

 

 

 

 

 

  1. Connection terminals
  2. Tube
  3. Insulation : magnesia oxyde (Mg O), to secure optimized heat transfer and electrical insulation.
  4. Resistance wire: Made of Nickel Chrome 80/20, it is the active part of the heating element (Joule effect)
  5. Cold length
  6. Sealing material: Keeps out external moisture. Different types (silicon, resins, cement) are used depending on the industrial application, the external medium and temperature
  7. Output insulation: Made of steatite ou corundum, it provides dielectric insulation (creepage distance, distance in the air).

Connecting terminals

Type B 100

  • THREADED STEEL OR STAINLESS STEEL ROD

Dimensions Sheaths Ø
Ø mm C I 6.5 8.5 10 13.5 16
M4 x 0.7 20 5
M4 x 0.7 20 5
M4 x 0.7 20 5
M5 x 0.8 30 10
M5 x 0.8 30 10
M6 x 1 35 10
M6 x 1 35 10
M8 x 1.25 35 10
M8 x 1.25 35 10

Type B 200

  • PLAIN ROD

Dimensions Sheaths Ø
Ø mm C I 6.5 8.5 10 13.5 16
2 20 5
3.5 25 5

Type B 300

  • BRAID OR CABLE

Dimensions Sheaths Ø
section mm² C 6.5 8.5 10 13.5 16
PVC INSOLATED COPPER CABLE H07VK 70°C
1.5 (1)
2.5 (1)
RUBBER INSOLATED COPPER H07RNF 85°C
1.5 (1)
2.5 (1)
4 (1)
1.5 (1)
2.5 (1)
4 (1)
6 (1)
10 (1)
SILICONE INSOLATED COPPER 180°C
1.5 (1)
2.5 (1)
4 (1)
6 (1)
GLASS BRAIDED COPPER 280°C
1 (1)
1.5 (1)
2.5 (1)
4 (1)
6 (1)
INSOLATED NICKEL WIRE 700°C
1.5 (1)
2.5 (1)
4 (1)
6 (1)

(1) Cable lenght go request

Dimensions Sheaths Ø
section mm² C 6.5 8.5 10 13.5 16
NICKEL BRAIDED NICKEL 350°C / 450°C
1 (1)
2.5 (1)
2.5 (1)
4 (1)
6 (1)

(1) Cable lenght go request

Dimensions Sheaths Ø
section mm² C 6.5 8.5 10 13.5 16
CERAMIC NICKEL WIRE
1.5 (1)
2.5 (1)

(1) Cable lenght go request

Type B 400

  • 6,35 TAB

Dimensions Sheaths Ø
Description C I 6.5 8.5 10
Straight single 25 5
carved single 23 5
Transverse single 15 5
Straight twin 22 5
Delta twin 22 5

Type B 500

  • FLAT TERMINAL

Dimensions Sheaths Ø
C I 6.5 8.5 10 13.5 16
25 5
30 10

Type B 600

  • THREADED TERMINAL

Code Dimensions Sheaths Ø
Ø mm C I 6.5 8.5 10
LAITON : B 614-6 M6 x 1 30 5
INOX : B 623-6 M6 x 1 21 5

Type B 700

  • SCREW TYPE BRASS TERMINAL

Dimensions Sheaths Ø
C I 6.5 8.5 10
15 5

Type B 800

  • BRAZABLE STEATITE

Dimensions Sheaths Ø
Ø mm C I 6.5 8.5 10 13.5 16
M 6 37 13
M 6 37 13
M 8 55 15
Use in humid conditions watertight
temperature from – 60°C to + 200°C
defrosting resistance

Type B 900

  • BRASS PIN TERMINAL

Dimensions Sheaths Ø
Ø mm C I 6.5 8.5 10 13.5 16
6 22 5
6 22 5

Fins

  • Rectangular fins:
    • tube diameter 8,5 & 10 mm: 50×25 mm in steel, zinc coated or stainless steel
    • tube diameter 13,5 & 16 mm: 80×40 mm in steel, zinc coated or stainless steel
  • Round fins:
    • tube diameter 8,5 & 10 mm: 24 mm in zinc coated or stainless steel
    • tube diameter 10 mm: 24 mm in stainless steel
    • tube diameter 16 mm: 40 mm in zinc coated or stainless steel
  • Spiral round fins:
    • tube diameter 10 mm: 26 mm in stainless steel AISI 430

Connectors / Assembly parts

  • The fins are fitted without clearance with the zinc coated or stainless steel fins
  • Crimped or welded steel, stainless steel connectors
  • Supply with washer and nuts

Certification (if requested)

  • According to CE European directives and CE market (for Europe)
  • ATEX/IECEx certificate for component or system
  • EAC CU TR, c CSA us (NEC 505)

Manufacturing tests

Electrical tests

  • Power test by cold resistance measurement. Allowed tolerance: -5% and +10% of the nominal resistance value.
  • Insulation test, direct voltage 500V, mini cold value is > 100 Megohms
  • Dielectric test, 2U + 1000V
  • The stray current and the hot dielectric rigidity can be measured on a sample at operating temperature (on request).

100% of the heating elements are tested before shipment (final control)

Mechanical tests

  • Visual inspection

Dimensional test

  • Critical dimensions are tested