Internal UV Ozone Photometer Page 9-
Rolling Average A rolling average is optionally applied
to the calculated ozone concentration in
order to reduce the variability that is
intrinsic in this type of measurement.
The Rolling Average parameter determines
how many photometer cycles are included
in this average.
Average Holdoff In order to improve the response time of
the Photometer during ozone
calibrations, this parameter may be set
to control how many photometer cycles to
wait after the ozone generator setpoint
has changed before the rolling average
is activated.
The following parameters are used to set up the analog outputs
(DACs) for a particular application. By changing these
parameters, the outputs may be scaled and filtered as needed:
DAC Full Scale Conc. This is the ozone concentration that
corresponds to 5 Volts on the analog
output. The units of measure for this
concentration may be changed by pressing
the F7 key when the parameter is
selected.
DAC Conc. At 0V This is the ozone concentration that
corresponds to zero Volts on the analog
output. By setting this to a value other
than zero, an offset can be introduced.
The units of measure for this
concentration may be changed by pressing
the F7 key when the parameter is
selected.
DAC Rolling Average Each DAC may be set up with a different
Rolling Average duration. See the
Rolling Average parameter described
above, in the Operating Constants
section.
DAC Average Holdoff Each DAC may be set up with a different
Average Holdoff. See the Average Holdoff
parameter described above, in the
Operating Constants section.
To Next Page
