IPSWICH,
MA -
Watt-Flex® Split-Sheath Cartridge Heaters by Dalton Electric
are available with a choice of mounting variations to accommodate
a variety of process heating applications. Options include a stainless
steel flange, a mounting bracket, an NPT fitting, and a puller
end plug.
Due to their
unique split-sheath design, Watt-Flex heaters run more efficiently,
last longer, and are more easily replaced than
conventional heaters, dramatically reducing the overall cost
of process heating. Split-sheath construction allows each half
of
the heater to expand independently when energized, for exceptional
metal-to-metal contact with the surrounding bore. This in turn
maximizes heat transfer, even in oversized bores.
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Greater
compaction of magnesium oxide around the coil provides superior
heat conduction to the outer sheath, resulting in more responsive
sheath temperatures, higher operating temperatures with cooler
internal operation, and up to five times longer life. Because of
their continuous-coil design, Watt-Flex heaters have no cold spots
between sections and thus produce a uniform temperature profile
along the heater sheath. With no sections to burn out, the entire
heater is either on or off. The continuous coil also allows a hot
tip option. When the heater is de-energized, the split sheath contracts
uniformly for easy removal. In fact, Watt-Flex heaters are warranted
removable from bores and sleeves.
Watt-Flex Heaters
are available in standard diameters of 1/4, 3/8, 1/2, 5/8, 11/16,
3/4, and 1 inch, as well as 8, 10, 12, 12.5, 15, 16, and 20 mm;
in lengths
from 11/4 to 72 inches; and with operating temperatures to 1700??F. Heaters
are available in custom lengths and electrical ratings, with hot
and cool tips. Customers
also have a choice of leads, including flexible stainless-steel hose or braid
to protect against frequent flexing and abrasion, straight or right-angle headers,
threaded post terminals, extra-long leads, high-temperature leads, fiberglass
or silicon-rubber sleeving, an internal ground wire, and a Quick Disconnect
lead with a convenient male plug.
Watt-Flex Heaters
can be manufactured with a groove along the exterior cartridge
sheath to accommodate a needle-type thermocouple. While conventional
heater
thermocouples measure the internal temperature of the cartridge, the Watt-Flex
thermocouple
measures the external temperature at the point of heat transfer between the
sheath and host metal. This design provides more accurate sensing and control
than that
of conventional thermocouple-equipped heaters in temperature-critical processing
applications such as molding heat-sensitive resins.
For more information,
contact: Eli Whitney, Dalton Electric Heating Co., Inc., 28 Hayward
Street, Ipswich, MA 01938, TEL: (978) 356-9844, FAX: (978)
356-9846,
e-mail: sales@daltonelectric.com, www.daltonelectric.com.
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