Dwyer DPM - Manual (Page 24)

Particulate Monitoring Systems
Installation & Operating Manual
Document No. 210-1003-M Page 17 ©2007
6.5 Long Term Averaging
The long term averaging function provides a rolling average of the real-time readings over time.
Averaging setpoints are accessed through averaging setup screen. To enter the averaging setup screen,
press the SETUP key while viewing the MAIN AVERAGE screen. Navigation within the setup
menu is similar to that described in the previous setup screens.
Press the SETUP key from the MAIN AVERAGE screen to enter the
AVERAGE setup screen. Use the UP/DOWN arrow keys to adjust
settings to the desired values. Press the ENTER key to save a value and
proceed to next setup screen. Press the SETUP/ESCAPE key to return
to the main average screen without saving the current parameter’s value.
Menu Item Range Definition
Average
Period
0-360
Min
Number of minutes the real-time
reading is averaged to compute the
average reading.
Clear
Average
YES/NO When YES is selected and the enter
key is pressed the averaging is cleared
and the average reading is initialized
to 0.
Press the ENTER key to toggle between the Real-Time display and the Average display.
Main
Screen
Units
Shown
Description
Real-Time
Display
pA Displays the real-time reading. Before display, the real-time
reading is processed through a low-pass input signal filter
which smoothes the reading. See the low-pass “Signal Filter
Frequency” setup in the Menu 3 setup section.
Average
Display
ApA Displays a selectable rolling time average of the real-time
reading. The average period (in minutes) is adjustable
through the average setup screen. The word “AVG” is quickly
shown in place of the readout once every five seconds,
indicating that the displayed and output reading is an
average.