>> Insertion heaters with medium or low charge are suitable for moderate heating up to 350ºC. Our insertion heaters are made with high quality stainless steel tubes or with other material such as copper, brass or aluminium.
A long-life ceramic body is inserted into the tube and withstands every continuous temperature variation, together with the best possible thermic conductivity. The heater wire is placed inside the ceramic body and is of first class quality. A nickel-chromium heater wire is used in the manufacture of cartridge heaters due to its high tolerance of high temperatures. Coated with checked granulometric magnesium oxide, covering the inside of the cartridge heater giving perfect conductivity between the heater wire and the heater.
|Heat intensity (low density)||Up to 4W/cm²|
|Power||Depends on dimension|
|Current leakage (cold state)||<= 0,1mA at 242V|
|Working temperature||Max 350°C|
|Tolerance length||+/- 1,5%|
|Tolerance diameter||+/- 0,1mm|
|Tolerance connection length||+/- 15mm|
|Power tolerance||+ 5% – 10%|
|Standard cold areas||5-25mm|
Medium / low density insertion heaters are manufactured using a method where we compress all internal components with magnesium oxide to achieve a long life.
A heating wire is placed in holes within the ceramic cylinder depending on the heat intensity. Discs and ceramic heads are placed at both ends to isolate and protect the heater. The whole unit is sealed in a metal tube and packed in pure magnesium oxide to insure that everything is completely insulated. The insertion heater is then compressed to the correct dimensions and tolerances.