Water
Cooled System: 1900 Watt, 2.45 GHz
Computer
Controlled Microwave Power Supply:
Switched mode power supply (220 VAC,
single phase), which can also be used
as stand-alone system with manual
controls. Includes isolator to protect
magnetron from reflected power, forward
and reflected power meters interfaced
with computer, three stub tuner, circulating
chiller.
Options:
1.
Auto-tune sliding stub tuner. Automatically
minimizes reflected power to maximize
power delivered to the load.
Single
Mode Microwave Heating Cavity
WR340
waveguide cavity with an iris and
sliding short, two teflon rf windows
to prevent contamination of waveguide
components, two choke tubes mounted
on broad wall of waveguide which can
accommodate up to 2" diameter
tube.
Options:
1.
In-situ weight monitoring: (capacity
is approximately 1 kg with a resolution
of ± 0.01 g)
2.
Controlled atmosphere: (Includes gas
inlet/outlet connections)
3.
Auto-couple servo driven sliding short
which, with computer control, adjusts
the cavity length for optimum resonance
during start up and as material properties
change.
Multi-Mode
Microwave Heating Cavity
Approximate
usable volume: 11"(W) x 11"(D)
x 9"(H).Uses mode stirrer to
ensure field uniformity. Cavity is
lined with 2" thick refractories.
Includes one pyrometer and one thermocouple
or light pipe port. Maximum temperature:
1500°C.
Options:
1.
In-situ weight monitoring. (capacity
is approximately 1 kg with a resolution
of ± 0.01 g)
2.
Controlled atmosphere. (Includes gas
inlet/outlet connections)
Temperature
Controller
With
a combination of thermocouples and
either an optical pyrometer or a sapphire
light pipe. 16 segment PID controller
and RS232C interface. Can be used
with either the single or multi mode
cavity.
Integration/Automation
Software
Custom
software packages can be provided
for full automation of the system
including logging of data and specification,
storage, and recall of processing
parameters. For example, for sintering
different types of ceramics, the previously
defined process can be recalled from
the data base and executed by the
control software.
In-situ
Dielectric Measurement System
With the
addition of a few components and
appropriate software, the single
mode system can be used to measure
the dielectric properties in situ.
A four probe, high power impedance
analyzer is used to measure the
input impedance of the cavity. As
the dielectric properties of the
sample being heated change, the
input impedance changes and the
dielectric properties are calculated.
