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User's manual – Ver. 1.53 July 2015 41/75
5 USER INTERFACE, SETTINGS and OPERATION
5.1 User interface and settings
There are four 1
st
level menu tabs in the touch-screen user interface one can navigate through
(Figure 11):
HOME showing:
o the measured values for Black Carbon (measured at 880 nm, BC) and UV
particulate matter (calculated at 370 nm, UVPM),
o measured flow,
o timebase setting,
o the amount of remaining tape,
o status: green (all OK), yellow (check status), and red (stopped) with a status flag
(see, 5.2 Instrument Status), Deconvolution of instrument status is triggered by
pressing the status color icon on home screen.
o date and time.
Note: The BC and UVPM values will typically be similar, but not exactly the same.
If aromatic compounds are present in the sampled air (such as when sampling
fresh wood-smoke, for example), the UVPM concentration will exceed the BC mass
concentration value significantly, depending upon the amount and type of organic
material present.
OPERATION with four sub-tabs: GENERAL, ADVANCED, LOG and MANUAL.
GENERAL where one can change the settings:
o flow (LPM),
o flow-reporting standard: These are the pressure and temperature which the
instrument uses to report flow. By choosing to report mass flow, (101325 Pa,
21.11 C) are used to convert the measured mass flow to reported volumetric
flow at these conditions (these are values used by the flow meter in the AE33).
These values can be substituted for any other (pressure, Temp) values, should
you want the flow to be reported at 0 C, or 25 C for example. Optionally, you can
chose volumetric flow at ambient conditions and reported volumetric flow will
be constant (ambient flow control). To do that you need an accessory for the
(pressure, Temp) measurement. We offer this separately. This external device is
connected to the COM ports, please see below (chapter: 5.6 External devices).
o timebase (seconds),
o maximum attenuation at which the Aethalometer advances tape – TA ATNmax
or,
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