Figure #1
Spent Cartridge
Dry Cartridge
What makes our filters so revolutionary is that even on the most
humid of days, these filters can be replaced within seconds, or cleared
and reused within minutes. Please refer to page #15 for instructions
on how to clear these filters.
METHANE vs. ACCURACY:
There are certain gasses that the MGD-2002 cannot eliminate, and
methane (CH
4
) is the most abundant and troublesome of them all. Just
like humidity, methane has a warming effect. Referring back to table
#2 on page #7, the higher the TC number the greater the cooling effect.
Methane’s number is so small, it acts like a negative tracer gas. Thus it
has a warming thermoconductivy or -TC. What makes methane so trouble-
some is that it’s very small and can thus pass through most filters with-
out detection or elimination. Even in today’s high tech environment,
the only way to eliminate methane is to burn it off. Unfortunately, in a
hand held device, burning off stray gasses is not an option.
Other gasses such as Propane (C
3
H
8
), Pentane (C
5
H
12
), and Ethane
(C
2
H
6
), Carbon Dioxide (CO
2
), Carbon Monoxide (CO), Nitrous Oxide
(N
2
O), and Ozone (O
3
), and most other CFC’s also have a negative TC (-
TC), but are easily eliminated by the second filter in the wand section.
Unfortunately the crushed activated charcoal has a limited useful life
when used in an environment of high organic compounds such as those
mentioned. It’s for this reason we at Dielectric strongly suggest return-
ing the MGD-2002 at a minimum of once a year to recalibrate. During
factory recalibration, the silica gel filters are cleared, and the other two
filters are replaced. Refer to page #17 for all the value added benefits
that are included in a factory recalibration.
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