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Immersion heaters that are part of a pressure vessel are designed, manufactured and inspected according to the pressure vessel code, Pressure Equipment Directive (PED), ASME VIII or other international codes. The selection of category according to PED should be advised by the customer, according to the conformity assessment.

The specific surface load is a measure for the heat transfer onto the heated medium. It must be chosen according to the medium, flow, pressure and mounting conditions as well as the medium temperature and admissible surface temperatures. With a specific surface load wich is optimized for the process, a high thermal efficiency will be
reached.

Please refer to the below table for ordering. If you need more information, please contact our sales representative for assistance.

You will assist us to answer your enquiry within short time, if you give us as much as possible operating data for the required heater with your enquiry
? Medium (if the medium is not common, please advise density, specific heat, heat conductivity and dynamicviscosity)
? Tank volume or flow rate for flowing media
? Operating temperatures, operating pressure
? Required heating capacity, nominal voltage
? Flange dimensions and rating, mounting thread
? Immersion length, unheated length (e.g. for mounting nozzle)
? Mounting position (horizontal or vertical)
? Ambient temperatures (standard: -20 I +40°C, special design for -40 I +55 °C)
? Materials for flange, heating bundle, connection box
? Design pressure, design temperature and design code for pressure vessel parts
? Protection (Ex hazardous area classification, IP)
? Special ambient conditions (e.g. outdoor mounting, offshore)

? Motor anticondensation heaters.
? Heaters for heating chambers or instrumentation cabinets
? Heating insets for gas heaters
According to the application, a flow monitor can be necessary to prevent the heater from overheating
Typical applications for liquid heaters:
? Lubrication oil systems for gas turbines, compressors, pumps, refrigeration compressors
? Heat transfer oil heaters
? Tanks for oil and fuels
? Tanks for liquids like water or process fluids
? Emergency showers
? Heat exchangers
In order to prevent overheating, liquid heaters always have to be covered with a sufficient liquid level. This must
be guaranteed by means of a level switch which is judged by reliability and function or by comparable measures.

Ex Cartridge Heater Type DWBDR..I..M
High performance cartridge heater with compact flameproof enclosure and fix mounted connection cable
Applications:
Heating of metal parts or components such as molds, valves, nozzles, extruders or other machine parts, especially in the plastics industries. Hot runner systems, packing machinery, analysis technology medical devices. Lube oil heaters for small machines.

High performance cartridge heater with flameproof enclosure and Ex d connection box. Option with built-in RTD Pt100 monitoring, in combination with thermal cutout。
Applications:
Lube oil heaters for small compressors,pumps, cooling compressors and other machines.