The small sizes of these heaters provide lower internal temperatures and faster heating response times. Swaged construction allows for higher watt densities, higher operating temperatures, and longer heater life. They come in three sizes:
The small sizes of these heaters provide lower internal temperatures and faster heating response times. Swaged construction allows for higher watt densities, higher operating temperatures, and longer heater life. They come in three sizes:
The standard sheath material is 304 Stainless Steel which provides good thermal conductivity and resistance to corrosion and scaling. The welded end disc made from the same material as the sheath provides a positive seal against moisture and other contaminants. Grade “A” Nickel-Chrome resistance wire precisely wound on a high purity magnesium oxide core places the resistance wire as close to the inside of the sheath as possible. A high purity Magnesium Oxide (MgO) powder is used to fill all remaining space inside the sheath. Heater is then swaged, which compacts the magnesium oxide grains into a solid mass.
The standard termination is a Teflon® plug with Teflon® leads (Type M3) with internally connected leads that provide flexibility and allow the leads to bend sharply as they exit the heater.
EXPLORE HI-DENSITY MINIATURE CARTRIDGE HEATERS SPECIFICATIONS
The Electrical Termination is located at one end of the heater and exits straight out from the heater.
Standard Termination for Hi-Density Miniature Cartridge Heaters.
A moisture resistant Teflon® seal that is swaged in during the manufacturing process with Teflon® insulated lead wire.
Flexible stranded lead wires have fiberglass insulation and are connected to 1-1/4" (32 mm) long solid conductors. Silicone rubber coated fiberglass sleeving insulates the pin/lead wire connection.
The fiberglass lead wires are internally connected to the terminal pins. This lead termination provides flexibility, permitting the lead wires to be sharply bent as they exit the heater.
Stainless steel braid over fiberglass leads offers sharp bending not possible with armor cable, as well as abrasion protection.
Armor cable provides the maximum in protection for abrasive, jagged environments. The coupling between the cartridge and the armor cable is mechanically fastened.
The heater sheath is bent up to 90°. The bend is through a required unheated section. The standard sheath extension past the bend is 1". Specify when ordering if a longer sheath is required.
Contact Tempco for bend radius details.
A locating ring can be attached to the heater to aid in positioning the heater for the application. The default position of the ring is 1/4" from the lead end. Specify the position of the ring when ordering.
