Anti-condensation self-regulated immersion heaters

Electrical self-regulated immersion heaters are designed for heating gaseous or liquid media for protection of motor carters and compressors.

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CETAL is certified for operation in hazardous areas and are used for:

Avoiding the dew point
Freeze protection
Temperature maintenance of equipment without casing

Reliability and robustness are key drivers for our engineers.

Product overview

Power range from 50 to 250 W
1PH or 3PH voltage supply
Heating length up to 3 m
In compliance with the ATEX / IECEx regulation

Advantages

Large range of materials and options according to customer process and application
Benefit from CETAL’s 50 years of experience as designer and manufacturer!
The end-to-end control of the design and production chain allows us to deliver a product which suits your process perfectly

Operating conditions

Hazardous areas (ATEX/IECEx) and NEC 505
Onshore / Offshore environment
Salt atmosphere

Liquids, gas and solids

Oil

Machine oil SAE 10, 30, 40 & 50, max load 2.0 – 3.5 W/cm², material: 316L
Mineral oil , max load 0.5 – 3.5 W/cm² acc. to temp, material: 321, 316L
Lube oil, max load 2.3 W/cm², material: 321, 316L

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: 6.5 / 8.5 / 10 / 13.5 / 16 mm
Tube material:
- Stainless steel: AISI 321 (1.4541) / AISI 316L (1.4404) / AISI 309 (1.4828)
- Others: Incoloy 800 (1.4876) / Incoloy 825 (2.4858) / Inconel 600 (2.4816)
Tube type: sealed tube

Manufacturing

100% of the components come high quality supplier from Europe
100% manufacturing in CETAL factory

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

Product description

Self-regulation of the heating element temperature through limitation of the Watt density
Supply voltage 230 V 1PH, 400 V 3PH, others on demand
Corrosion-resistant AISI 321 stainless steel tube material (1.4541)
M45 screw plug with Ø 45 seal, brass or stainless steel
Working pressure < 8 bars (not DESP-relevant)
ATEX/IECEx connection housing, AISI 316 stainless steel (1.4404) or nickel-plated brass, IP 66 protection rating
Connection through M4 threaded rods (2 accessible terminals)
Horizontal mounting
Protection and marking: II 2 G Ex d IIC T1 to T3 Gb IP66
Option: ATEX cable gland, nickel-plated brass, ADL1F ISO M20 type

Temperature range

T4 and T3 temperature range
- B135 type ATEX immersion heater
- Ambient operating temperature
  - T4 (135 °C): from – 50 °C to + 40 °C
  - T3 (200 °C): from – 50 °C to + 60 °C

T3 and T2 temperature range
- B200 type ATEX immersion heater
- Ambient operating temperature
  - T3 (200 °C): from – 50 °C to + 40 °C
  - T2 (300 °C): from – 50 °C to + 60 °C

Certification (if requested)

According to EC-type examination certificate LCIE 07 ATEX 6004 X
IECEx Certificate of Conformity LCIE 11.0017 X
c CSA us
EAC & CU TR (former GOST)

Manufacturing tests

Electrical tests

Power test by cold resistance measurement. Allowed tolerance: -5% and +10% of the nominal resistance value.
Insulationtest, direct voltage 500 V, mini cold value is > 100 Megohms
Dielectric test, (2U + 1000 V) x 1,2 during 1 second
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)