IPSWICH,
MA -
Watt-Flex® Split-Sheath Cartridge Heaters by Dalton Electric
are available with a choice of leads to accommodate a variety of
process heating applications. Options include flexible stainless-steel
hose or braid to protect against frequent flexing and abrasion,
straight or right-angle headers, extra-long leads, high-temperature
leads, threaded post terminals, fiberglass or silicon-rubber sleeving,
an internal ground wire, and a Quick Disconnect lead with a convenient
male plug.
Because of 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, maximizing metal-to-metal contact with the surrounding
bore. This in turn maximizes heat transfer, even in oversized bores. |
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Maximum
compaction of magnesium oxide around the coil provides superior heat
conduction to the outer sheath, resulting in more responsive sheath
temperatures, 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. The split sheath contracts uniformly when de-energized,
for easy removal. In fact, Watt-Flex heaters are warranted removable
from bores and sleeves.
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. 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 1 1/4 to 72 inches; and with operating
temperatures to a maximum of 1700°F. Heaters are available
in custom lengths and electrical ratings, with hot and cool tips.
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 of the heater at the point
of
heat transfer between sheath and host metal. This design provides more
accurate temperature sensing and control than that of conventional
thermocouple-equipped
heaters in critical 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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