electric heaters designer and manufacturer www.cetal.com Electric heating equipment ustom designed electric heater ATEX application ATEX PED
UNT ELEMENTS AND ASSEMBLES Sheath : Protects the heating element from the outside. The type of sheath depends upon the ambient surroundings and temperature of use. (see p.9). t prevents from impact and corrosion. t is formed for the requirements of the application and its fitted with fastening accessories. The diameter and length depend on the power and load required (W/cm²). onnecting terminals : Depend upon the intensity and are used to connect the heating element electrically. Output insulation : Made of steatite or corubdum to provide dielectric insulation (creepage distance, distance in the air). nsulation : Electrically fused magnsesium oxide for effective dielectric insulation and thermal conduction. Resistance wire : Nickel chromium alloy, 80/20, forming the active part of the heating elements. Sealing material : Keeps out external moisture. its type (silicon, resin, cement) depends upon the industrial application, the external surroundings and temperature (max. temp. for resin 150 - max. temp. for silicone : 250 ). Output rods : Make up the nonn heating part. Their section depends on the sheath diameter and the intensity. The length depends upon the use. (See table below) GENERAL NFORMATONS TOTAL LENGTH Total length : heating and non heating length. NON HEATNG LENGTH All the elements are made up of an heating part and two non heating parts at either end. The table below shows the length of the or stainless output rods which forms the non heating part. Sheath outlet in mm material 6,5 2 8,5 3,5 10 M4 x 0,7 S. 13,5 M5 x 0,8 16 M6 x 1 S. 16 M8 x 1,25 Length in mm 35 40 45 55 75 80 95 122 150 180 205 225 235 260 330 365 445 530 640 800 1000 1350 S. = Stainless and ASSEmbLy parts onnectors, plugs and flanges are crimped, brazed or welded. They are used to set the heating element as required by the application. SURFAE TREATmENT Appropriate surface treatment is applied to adapt the heating elements to different requierements : Mechanical treatment : sand blasting, aluminium or zinc plating, lead or Halar coating hemical treatment : pickling, copper and stainless passivating Galvanic treatment : tin or nickel plating, electrolytic polishing.
TEHNiAL informations MEHANiAl HArATErisTis GRADE SELETON The most important criteria are the temperature of use, the nature of the medium and the surface flux. AS 321 Variety of AS 304 stabilised with titanium to avoid chromium corbide. t is specially recommended for long use in the critical temperature range. AS 316 L The addition of molybdenum (2-3%) makes it particularly resistant to chemical agents with a reducing effect. The low carbon content (or addition of titanium) gives it high resistance to intercrystalline corrosion. AS 309 Austenitic with a high chromium NOLOY 800 Based on the ternary nickel/iron/chromium system and characterised by high resistance to corrosion in aqueous surrounding. ts high nickel content gives it effective resistance to crevice corrosion under stress due to chlorine ions. ls high chromium content makes it resistant to oxidation and carburation at high temperatures. NOLOY 825 The addition of molybdenum and cooper make highly resistance to reducing and oxidising acids, crevice corrosion under stress and pitting corrosion. t is particularly resistant to sulphuric and phosphoric acid. NONEL 600 Nickel chromium alloy offering high resistance to oxidation at high temperatures and resistance to crevice corrosion under stress due to chlorine ions, corrosion by very pure water and caustic corrosion. As deposit attacks, corrosion under stress and chemical corrosion (pitting) depend upon the conditions of utilisation, etal shall not be responsible for failures and defects due to corrosion. We encourage you to check if the offered material is suitable for your application. MATERALS opper Austenitic Nickel alloy ETAL code K V N Z A AS code 321 316 L 309 NOLOY 800 NOLOY 825 NONEL 600 DN code 1.4541 1.4404 1.4828 1.4876 2.4858 2.4816 Usuels diameters 6,5 8,5 10 13,5 (1) 16 (1) (1) limit temp of use 250 in the air 750 750 1000 950 950 950 (1) Stainless tube on stock Usual diameters 6,5 8,5 10 13,5 16 Maximum use voltage 415 V 415 V 500 V 750 V 750 V Max. current intensity per resistor Power tolerance >100 W Power tolerance <100 W ElETriAl HArATErisTis 10 A 14 A 14 A 20 A 60 A +5-10 % +5-10 % +5-10 % +5-10 % +5-10 % ±10 % ±10 % ±10 % ±10 % ±10 % DiMENsiONAl HArATErisTis The heating length of an element is determined to ensure even distribution of heat in the heated medium. t is calculated to the HL fomula in cm : Lch en cm = P p.s. P = heating element nominal power p = specific load in W/cm² s = periphery of heating element in cm Sheaths Forming Very high quality rolled, welded or seamless tube manufactured and inspected according to standards ASTM-DN ou NFA 49-147 The heating elements are available in a variety of shapes adapted to the use circumstances defined in the specifications or by the customer Tolerances diameter : 6,5 ± 0,1 mm 13,5 ± 0,1 mm 8,5 ± 0,1 mm 16 ± 0,1 mm 10 ± 0,1 mm length : ± 1 % with + 5 mm minimum standard material : MEANiAl HArATErisTis the dimensions in the table are maximal dimensions intented to prevent assembly problems ODifiATiON ExAMpLE : R 16 V1500/0150 (...) R = heating resistor 1500 = heating element total length in mm 16 = element diameter in mm 0150 = non heating length in mm on either side of the heating part. V = sheath grade AS 321 (...) = replying reference www.cetal.com
ONNETiNG TERMiNALS TYPE b 100 THrEADED steel Or stainless steel rod TYPE b 200 PlAiN rod ode no Dimensions Sheats mm 6,5 8,5 10 13,5 16 B104 M4 x 0,7 20 5 B114 M4 x 0,7 20 5 B114 N M4 x 0,7 20 5 B115 M5 x 0,8 30 10 B115 N M5 x 0,8 30 10 B116 M6 x 1 35 10 B116 N M6 x 1 35 10 B118 M8 x 1,25 35 10 B118 N M8 x 1,25 35 10 Dimensions Sheats ode no mm 6,5 8,5 10 13,5 16 B212 2 20 5 B215 3,5 25 5 TYPE b 300 braid Or AblE Pv insolated OPPEr AblE H07vk 70 Dimensions Sheats ode no section mm² 6,5 8,5 10 13,5 16 B 345 1,5 (1) B 346 2,5 (1) silione insolated OPPEr 180 Dimensions Sheats ode no section mm² 6,5 8,5 10 13,5 16 B 351 / B 361 1,5 (1) B 352 / B 362 2,5 (1) B 353 / B 363 4 (1) B 354 / B 364 6 (1) rubber insolated OPPEr H07rNf 85 B 331 1,5 (1) B 332 2,5 (1) B 333 4 (1) B 335 1,5 (1) B 336 2,5 (1) B 337 4 (1) B 338 6 (1) B 339 10 (1) NikEl braided NikEl 350 / 450 B 340 / B 325 1 (1) B 341 / B 326 1,5 (1) B 342 / B 327 2,5 (1) B 328 4 (1) B 329 6 (1) glass braided OPPEr 280 B 325 1 (1) B 321 1,5 (1) B 322 2,5 (1) B 323 4 (1) B 324 6 (1) insolated NikEl WirE 700 B 371 1,5 (1) B 372 2,5 (1) B 373 4 (1) B 374 6 (1) (1) cable length on request ErAMi NikEl WirE B 312 1,5 (1) B 313 2,5 (1) TYPE b 400 6,35 TAb ode Dimensions sheath no description 6,5 8,5 10 B 411 straight single 25 5 B 412 curved single 23 5 B 413 transverse single 15 5 B 422 straight twin 22 5 B 423 delta twin 22 5 TYPE b 500 flat TErMiNAl Dimensions sheath ode no 6,5 8,5 10 13,5 16 B 521 E 25 5 B 521 B 522 30 10 B 523 30 10 TYPE b 600 THrEADED TErMiNAl Dimensions sheath ode no mm 6,5 8,5 10 Threaded brass terminal : B 614-6 M6 x 1 30 5 Threaded stainless terminal : B 623-6 M6 x 1 21 5 TYPE b 700 srew TYPE brass TErMiNAl Dimensions sheath ode no 6,5 8,5 10 B 714 15 5 TYPE b 800 brazable steatite TYPE b 900 brass PiN TErMiNAl Dimensions sheath ode no mm 6,5 8,5 10 13,5 16 B 808 M 6 37 13 B 810 M 6 37 13 B 816 M 8 55 15 watertight Use in humid temperature from - 60 to + 200 conditions defrosting resistance Dimensions sheath ode no mm 6,5 8,5 10 13,5 16 B 902-6 6 22 5 B 914-6 6 22 5
bending EXAMPlEs ODE NO 11-1-00-00 A ODE NO 11-1-00-11 A ODE NO 13-2-00-00 A ODE NO 13-2-00-00 b ODE NO 12-1-11-00 A ODE NO 13-1-00-00 A ODE NO 13-1-20-00 A ODE NO 15-1-22-00 A ODE NO 31-1-00-11 A ODE NO 31-1-11-00 A ODE NO 56-1-10-11 A ODE NO 56-1-10-00 A ODE NO 46-6-01-11 A ODE NO 45-5-01-11 b rr rrr rrr rrrrrr r r rrrr rrrr r r rr r rr ODE NO 44-4-00-00 A ODE NO 43-3-11-11 A REALizATiON ExAMPLES
ELEMENTS formed TO TEMPLATES These elements offer a very good alternative for duplicate-moulded heating plates, particulary for heating hot-channel distributor units in the plastics industry. Because of the specific manufacturing conditions used by etal, the temperature is distributed very evenly over the entire formed heating element. TEHNiAl ArATErisTis Power : according to specifications Voltage : mono 230 V - 400 V or else Tolerance of bending : individuel controle on size Minimum bending radius see table p11 Sheath 6,5 : ± 0,1 Sheath 8,5 : ± 0,1 Sheath 10 : ± 0,1 Data sheet : see www.cetal.com