Casella CEL Microdust Pro real time dust monitor - Manual (Page 44)

MicroDust Pro Aerosol Monitoring System
44 Casella CEL
Displayed values
Current concentration Represents the rolling average of instantaneous
particulate concentration over a user-selectable time
period from 1 second to 60 seconds.
Average Represents the average value since the instrument
was switched ON or since the instrument was reset.
Max value Represents the maximum instantaneous value since
the instrument was switched on or since the
instrument was reset.
Instantaneous values are updated at intervals of
1 second.
Scrolling graph The graph mode proves an indication of variations in
particulate concentration over time.
You can select the timebase for periods of
100 seconds, 200 seconds, 15 minutes or 60 minutes.
The Y-axis can be set to a fixed range, or can be auto-
ranging.
Factory calibration The instrument is factory calibrated using traceable
isokinetic techniques and ISO 12103-1 A2 Fine test
dust (Arizona road dust equivalent).
Four user-defined calibration settings are available to
suit specific types of particulate or particular
monitoring applications.
Routine calibration The instrument’s software provides an easy
calibration routine for zero and span settings.
The instrument allows confirmation of the factory
calibration point by using an optical reference filter.
Data logging
Internal memory 64K EEPROM providing capacity to store more than
15700 data points.
Example capacities:
Logging every 5 s 21 hours 48 minutes
Logging every minute 10 days 21 hours
Logger interval Adjustable from 2 seconds to 600 seconds