Electric Immersion Heaters are most suitable for direct heating of nearly all process liquids and corres- ponding applications. Excellent chemical resistance is ensured by the use of different immersion tube materials and variable fitting options help you to meet the individual re- quirements of heating installations. A long life span with optimum reli- ability is assured by using high qual- ity materials thereby ensuring fault- less operation of your system.

Electric Immersion heater is constructed on a modular basis and consists of a tube, a long-life heat- ing cartridge, a terminal casing and the lead.

The Immersion Heater Tube

We can offer you the optimum ma- terial for every application. The heated length (minimum immersion depth) is marked by a ring which is generally two-thirds of the tube length. The tube is not heated above this mark. The heated portion must always be covered with liquid even in the case of high liquid level fluc- tuation. 

The Long-Life Heating Cartridge

Long-life heating cartridges are made from ceramic groove bodies with high electrical insulation values and good mechanical strength.

A high temperature resistance heat- ing wire is fitted as a coil in order to achieve the best possible heat radiation from tube to liquid. The cartridges for immersion heaters are available in rated power voltages up to a maximum of 500 volts for one, two and three phase connections.

The Terminal Casing BC

The BC terminal casing for immer- sion heaters consists of high tem- perature stabilized PP. 

Problemfree use in most process liquids is en- sured by good mechanical and thermal strength as well as wide ranging chemical resistance. The PVDF terminal casing (BC / L) is re- commended in cases of extreme temperature (liquid temperature >80°C) or when subjected to strongly oxidizing chemicals

(e.g. chrome electrolyte or HNO3). The protective casing is IP 65 (jet- waterproof) according to EN 60529.

Easy access to the terminal (after fit- ting) when connecting the lead is also ensured by unscrewing the cap with the mounting wrench SB.