AceTRONIC Cartridge
Heaters
For SPLIT cartridge heaters click
here
Cartridge Heater
Order Form (Conventional)
Our high-density cartridges are round tubular heaters with
electrical terminations on one side. These dependable heaters are made to
withstand tough industrial usage. With a tolerance of +/- 0.002” on their
outside diameter to secure a tight fit inside receptacle holes, and rock hard
compaction of MgO insulation through swaging, these heater can attain 1500°F
sheath temperature.
Acetronic cartridges are available with various termination
styles and mounting attachments, we can customize our heaters to suite your
application.
In high-density cartridge heaters the resistance wire loops
are positioned as close as possible to the outside shell. Because the MgO
powder insulation around these loops is compacted by swaging and transformed
into a very hard medium, heat transmission is very efficient. Our cartridges
can have up to 200 watts/in² watt densities.
Cartridges are usually supplied with lead wires. The attachment of the leads
to the central pins is done internally, in a 3/8” cold section. In excessively
hot applications, the length of this cold section could be increased.
To facilitate installation and avoid excessive air pockets, cartridges are
made 0.004” less tan the nominal size of the receptacle hole with a tolerance
of +/- 0.002”.
AceTRONIC cartridges can be dual-voltage, three phase, and/or be supplied
with a ground terminal. With ten different termination styles, mounting attachments
and various optional features, Our high-density cartridges are widely used
in numerous high temperature applications.
Click here if you need additional info
or to order
FL Style
Flange mounting attachments secure the cartridge firmly
in place in applications where there is excessive vibration. 1 ½”diameter
is the standard flange size. Flanges with smaller diameters are generally
used as stop rings.
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IM Style
The conical thread of NPT fittings (single or double ended), allow
for simultaneous threading and sealing. Brass or stainless steel fittings
can be brazed on the lead end of a cartridge heater.
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Heater Dia. |
NPT Size |
1/4" |
1/8" - 27 |
3/8" |
1/4" - 18 |
1/2" |
3/8" - 18 |
5/8" |
1/2" - 14 |
3/4" |
3/4" - 14 |
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Optional Features
Built-in thermocouples:
One optional feature on our high density cartridges is built-in thermocouples.
These could be type “J” or “K”, grounded or ungrounded, and attached either
at the disc end or middle of the cartridge.
Graphite coating:
To facilitate their installation and removal, cartridges could be coated with
a graphite-like substance. This solid lubricant doesn't increase the outside
diameter, and is suitable for temperatures up to 750°F.
Moisture and contamination proofing:
To protect cartridge heaters against moisture and contamination, Teflon lead
wires are used and the lead end is sealed using Epoxy, RTV silicone or Teflon.
The temperature limitation is 480°F.
Distributed wattage:
In applications such as sealing bars or rubber molds, the two ends of a cartridge
heater are usually colder than the middle. To overcome this inconsistency
and have a uniformly distributed heat source, cartridges could be made to
have higher wattages at the ends. 35/30/35 is a common wattage distribution.
Center-less grinding:
In applications where superior heat transfer is required, the tolerance on
the outside diameter could be improved to +/- 0.001” by center-less grinding.
Zones and cold sections:
We can also manufacture cartridges with cold sections and separate zones that
can be controlled independently.
Cartridge heater specifications
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Recommended Watt densities to heat mild steel |
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info or to order
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© 2002-2004 All Rights
Reserved, AceTRONIC Industrial Controls Inc.
Last revised: May
2004
