Immersion heaters

Flanged Immersion heaters - CETAL

The flanged immersion heaters are particularly suitable for heating or maintaining temperature of large volumes of fluid such as water, fuel oil, thermal oil, air or gas.

Indifferently mounted on tanks, cisterns, boilers, circulating heaters, etc... they represent optimal heating systems for all kind of processes.

The flanged immersion heaters consist of electric heaters generally simple hairpin formed, brazed or TIG welded. The watt density(W/cm2) is adapted to operating conditions. The quality of stainless steel tubes (AISI 321, AISI 316L, AISI 309, 800-825 Incoloy, Inconel 600) is determined according to the environment and temperature. For heating temperature > 110 ° C, the electrical connection box is offsetto ensure protection of electric connections.

The flange immersion heater is made up of:

• a bundle of electric heating elements characterized by its diameter and  immersion length. The bundle diameter depends on the number of heating elements usually hairpin formed and welding procedure used. The number of heating elements is defined by the total power required and the maximum watt density (W/cm2).
• a flange (DIN - ASA - Other ...) is calculated according to the pressure and operating temperature, size range from DN80 PN10 (3 "150 lbs) to DN2500 PN250 (100" 1500 lbs). The seal design (SEM - DEM) is consistent with the flange cap.
• a offset box for temperature over 110 °C to limit temperature in the junction box at 80 ° C max.
• an electric connection box, in protected steel or stainless steel, with cable inputs sized according to the number and power of heating elements; temperature control system can be mounted in the connection box.
  
  

APPLICATIONS

Flange immersions heaters are used to heat gas or fluid in horizontal or vertical position in different industries such as food processing, petrochemicals, chemicals , pharmaceuticals, energy, textiles, plastics industries, machine tools, marine industries, aerospace, research, water treatment, ...

Based on strong experience, our technical departement is able to design the flange immersion heater according to your application and requirements.

Watt density recommendation:

Threaded immersion heaters - CETAL

Formed by two or three forks cross soldered on a brass plug in standard models or stainless steel demand. 
Circuits 230 V (the connection bridges are included) Cover for optional thermostat.
Maximum working pressure of 15 bar heated length should always be submerged.

Immersion heaters with screw terminals displaced in the box formed by two or three forks cross soldered on a brass plug in standard or stainless steel models.

Circuits 230 V (the connection bridges included)
Suitable for working conditions where fluid temperature exceeds 110 ° C.
The terminal box displaced at 110 mm compared to fitting setting.
Cover for optional thermostat. Maximum working pressure of 15 bar
NB:The heated length should always be submerged.

Models with M45 x 200 screw	Heating elements in stainless steel AISI 321. Brass screw plug. Specific load 2W/cm2
Models with M77 x 200 screw	Heating elements in stainless steel AISI 321. Brass screw plug. Specific load 2 W/cm2

Bottom tank immersion heaters

The bottom tank immersion heater is made up of 3 or 6 tubular heating element sgenerally mounted in a circle, brazed or welded to a brass, steel or stainless steel screw plug. The watt density and the various type of material used for the tube heating elements are adapted to the nature of the heated liquid.

• Made up of 3 or 6 coil elements arranged in a circle, soldered on a brass cap

• Supplied with terminal links, seal and nut

• Circuit 230V, 400V other voltage on request, coupled 1Ph 3Ph

• Optional pocket Ø int. 6.5

• Connections on screw terminals

Models in stainless steel AISI 321	M45 x 200 Brass screw plug.                           Specific load 2 W/cm2
Models in Copper	M77 x 200 Brass screw plug. Specific load 2 W/cm2

Accessories

Mounting hardware common to all models of Immersion Heaters threaded fittings mounted on either standard, brass or stainless steel.

Joints
Nuts
Flange to solder
Terminal covers
Terminal boxes

Heaters for open tanks and deposits

Suitable for heating liquids in open vats, with low or variable heat.

Heating elements stainless steel tube AISI 321, AISI 316L, Incoloy Ø 8.5 - 10 - 16 mm, usually formed by single or double hairpin mounted in a sheet.

Non heating height depending on the tank level mini / maxi. Housing cap fixed above the tank or mounted on its edge to protect it from evaporation and shock.

Temperature switch located in the upper part to allow power switch off in case of low level. Coupling 1Ph or 3Ph. Possible coatings Polyfluoro.

			RBA Series Immersion heaters for tanks. In stainless steel AISI 321. Specific charge 2 W/cm2. For water	Heating elements in stainless steel tube AISI 321 or AISI 316L, Incoloy Ø 8.5 - 10 - 16 mm, generally formed by single or double pin mounted in a sheet, welded to a waterproof case Stainless steel riser tube AISI 321 or AISI 316L Coupling 230-400V 1Ph or 3Ph
			RBI Series Immersion heaters for tanks. In stainless steel AISI 316 Ti. Specific charge 4W/cm2. For fuel
	RC Series Base pump heaters. In stainless steel Aisi 321. Specific charge 2 W/cm2. For heavy fuel. Tank immersion heaters are intended to heat heavy oil upstream suction devices, introduced into a tank for the manhole. 3 or 6 elements in stainless steel tanks AISI 321 or AISI 316L of low surface charge density (W/cm2). Optional temperature sensor Wiring 230-400 V 1Ph or 3Ph Riser tube Ø 42,4 mm with adjustable height system for fastening
	Specially manufactured Models These are designed for heating liquids in open barrels with low or variable levels (depending on model) for degreasing baths or surface treatment. They can adapt to the needs of the process, and the dimensional limitations of the equipment. Models for vertical (wall mount) or horizontal (bottom of tank) TECHNICAL SPECIFICATIONS Voltage up to 750 V, single-phase or three-phase heating elements welded on flanged or watertight terminal box separate from the evaporation zone. Dimensions adapted to process. Maintenance Temperature controls.
		CCA Models Watertight head with IP67 degree of protection against moisture (*) The top head incorporates a female 1/2" thread to attach a tube through. Gaskets. Triphasic Models circular base IP54 degree protection against humidity. Tube Incoloy-800 Connection box in AISI 430 stainless steel & cover in AISI 304 Bob fittings in AISI 303 stainless steel. Corrugated tube for protecting cables conductors, 3m lenght, Voltage 3 ~ 230 V., 3 ~ 400 V
		Portable heaters (Series TB, TR, DH, RV) Series TB for water DH for oil, PB for acide bathss, RV for wine. normal tension 230 V AC
		Calentadors portàtils  (Series BH) Series BHA, BHB, BHC, BHX, BHL, y BHP Normal tension 230 V AC