Hi-Density Cartridge Heaters
Our Cartridge heaters are the highest quality available. These heaters are the result of many years experience perfecting high watt-density elements capable of long life at elevated temperatures. Early achievement by our design and manufacturing engineers met the challenge of high heat technology for industrial users and provided an excellent manufacturing base for all of our cartridge heaters. These heaters can provide continuous operation at sheath temperatures up to 1800°F as well as uniform, accurate heating in the lower temperature range.
Special Considerations :
Multi-Circuits: ¾” diameter cartridge heaters can be provided with independent heat zones thru multi-circuit or 3 phase resistance wire winding. These heaters permit uniform heat along the entire length of the heater where heat transfer rates must vary between specific heated areas. Consult us for minimum length requirements.
Profiled Heat: Cartridge heaters can be manufactured with a shaped profile heat distribution to balance out heat applied along the length of the heater.
Thermostats: Various thermostats, meeting different sensitivities, can be incorporated into and made an integral part of our cartridge heaters to control or act as a safety monitor against excessive temperature.
Proflex Wire: Cartridge heaters can be supplied with heavy duty stranded wire to prevent lead breakage due to flexing. It is available in most lead configurations.
Moisture Resistant Barriers: In addition to the Teflon seal heaters, which will withstand operating temperatures up to 300°F, various epoxy compounds can be supplied at the lead wire end for heater operation up to 450°F. Consult us for detailed information.
Other Accessories: Cartridge heaters can be supplied with grounded, twist-lock as well as UL-listed, dead front (hospital grade) electrical plugs. Post terminal and terminal boxes for protection of electrical connections are available.
Metric size heaters: We manufacture metric dimension cartridge heaters for customers with this requirement.
Compliance with Special Codes :
Proheat’s heaters are designed to meet various stringent requirements, including those of aerospace, military, nuclear regulatory and NASA, as well as city, county, and state codes. Heating elements are designed to meet codes and specifications of NEMA (National Electrical Manufacturers Association) unless otherwise specified by the customer. Components used in the manufacture of our cartridge heaters have been recognized by UL and CSA and comply with Factory Mutual (FM) regulations as required.
Tolerances :
Diameter
Nominal: 1/4” 3/8” 1/2” 5/8” 3/4”
Actual(+- .002): .245” .370” .495” .620” .745”
Camber
+- .020 inch/ft.
Lead Wire Length
+- 2% or 1/2” whichever is greater
Heater Length
+- 2% or 3/32” whichever is greater
Wattage
+5%, -10%
