flat shape of the Mighty-Blade provides greater surface area
inch for inch of length than round elements. With the Mighty-Blade,
equipment can he designed with more wattage in less linear space
than with conventional elements. Or, by replacing an existing tubular
heater with a Mighty-Blade of the same length, the watt density
is significantly reduced. In immersion applications the narrow profile
increases natural convective flow of materials being processed,
resulting in lower sheath temperatures and improved heat transfer
to the process. Materials being processed are less susceptible to
degradation. In processes where these considerations are not as
critical, watt densities can be reasonably increased. The .275"
x 1" dimension creates anti-corrosion, self-cleaning effects
that significantly extend the Mighty-Blade's useful life by not
allowing the collection of foreign materials on the sheath. The
multiple coil design permits an individual element the flexibility
to be wired at the installation in single phase, three phase, three
heat or dual voltage. The Mighty-Blade can be used in virtually
any immersion, clamp-on, forced air or radiant heating application.
typical application using a 3 tubular element immersion heater at
22 watts per square inch and a rating of 9kw has an immersed length
of 47-1/2" (A). By utilizing the same spatial limits
and installing a Mighty-Blade Immersion Heater, the rating, at the
same 22 watts per square inch, can be increased to 13.8kw (B).
In the same manner, the original 9kw item at 22 watts per square
inch needs only a 31-1/2" immersion length (C). A Mighty-Blade
immersion heater with the same dimensions as the tubular element
heater would have a watt density of 13.9 at 9kw. Note the vertical
position of the Mighty-Blade elements. As illustrated, much more
wattage can be packed in the same area, the same wattage can be
provided in less area, or, in the same area at the same rating,
processes can be heated at significantly lower watt densities with
|MIGHTY-BLADE TERMINAL DESIGN
|The following termination styles are
available on Mighty-Blade Process Heaters. Specify the type configuration
along with all specifications and application parameters when ordering.
Dimensions will be provided on final design.
|Fig. U is a nickel plated flag terminal
projection welded at a right angle. 10-32 binding head screws provide
easy side access for 3 phase operation. Fig. U includes a ceramic
||A nickel plated, 1/4" quick connect
terminal is projection welded to element pins to provide repeated,
rapid connections. Fig. X is for 2 or 3 coil internal design connected
in series; Fig. Y is parallel. A ceramic insulator is required for
same flag terminal design as Fig. U, Fig. V and Fig. W are for
single phase operation. Fig. V is for 2 or 3 coil connection in
series; Fig. W in parallel.
standard Mighty-Blade design is with 12" TGGT leads and fiberglass
sleeving for temperatures to 450°F/250°C. Specify longer length
or Consult Ogden for lower or higher temperature requirements.
|The unheated area from
the termination end to the initial bend along with minimum dimensional
requirements are primary considerations when forming a Mighty-Blade
element. Parameters of the five possible types of bends are shown
for use when designing a Mighty-Blade.
on any Axis Bends to enlarge
- Tolerances and Limitations:
- Width: 1.0" + .015" -.010"
- Thickness: .275" ±.005"
- Minimum Sheath Length: 12"
- Maximum Sheath Length: 180"
- Maximum Voltage: 480
- Maximum Amps: 40
- Minimum Ohms/In. of EHL:
- Mini2 coil element, .075 ohms; Mini3 coil element,
- Maximum Ohms/In. of EHL:
- Mini2 coil element, 3.5 ohms; Mini3 coil element,
- Unheated Area Each End: 1" minimum;
- 12" maximum Wattage: +5 -10%
- Resistance: +10 -5% Sheath Length:
- ±1/2% Effective Heated Length: ±1%