5
Operating Modes
overview
The DC1700 has several operating modes. The user can cycle
through the various modes by pressing the MODE button.
Selections within a mode, such as viewing history data, are made
by pressing the SELECT button. In the various modes the
DC1700 will display both the small particle concentration and
large particle concentration. Small particle concentration is
always displayed to the left and large particle concentration to the
right. Small particles are all particles detected by the DC1700
down to its detection limit –0.5 microns. Large particles are all
particles detected above the large particle threshold which is
approximately 2.5 microns. (Note: to determine the particles
between 0.5 microns and 2.5 microns simply subtract the large
particle reading from the small particle reading) The values are
scaled so that these represent the concentration of particles in
approximately .01 cubic foot of sampled air. Thus, to determine
the number of particles per cubic foot of air simply multiply the
DC1700 readings by 100. Examples of particles that might be
present in the typical home in these ranges are:
small particles: fine dust, bacteria, mold, smoke, smog, etc.
large particles: coarse dust, pollens, larger bacteria, plant
spores, dust mite feces, etc.
continuous mode
The DC1700 is simple to operate. All that needs to be done is to
plug the unit in and turn it on. Once turned on the unit will
automatically configure itself to run in continuous mode and
display the current level of particulate pollution for both small and
large particles. The data sampled will also be recorded for future
