MAGEE Scientific Aethalometer AE33 User Manual page 105

Aethalometer
Model AE33
Data field description:
- Date (yyyy/MM/dd): date.
- Time (hh:mm:ss): time.
- Timebase: timebase – units in seconds.
- Ref1, Sen1Ch1, Sen2Ch1...: are the raw signal Reference (Ref), Sensing Spot 1 (Sen1) and
Sensing Spot 2 (Sen2) values from which the BC concentrations are calculated for channel 1
(Ch1), wavelength 370 nm. BC11 is the uncompensated BC calculated from the spot 1 for
channel 1. BC1 is the final result for the BC calculated from measurements for channel 1 (370
nm). This is repeated for channels 2 through 7 (wavelengths 470 ~ 950 nm).
- Flow1; Flow2; FlowC: Measured flow in ml/min. Flow is flow through the spot 1, FlowC is
common (total flow) through the optical chamber, Flow2 is the difference between these two.
- Pressure (Pa); Temperature (°C): These are the pressure and temperature which the
instrument uses to report flow. By choosing to report mass flow, the values of (101325 Pa,
21.11 C) are used to convert the measured mass flow to reported volumetric flow at these
conditions, since these are values used by the flow sensors in the AE33. These values can be
exchanged for any other (Pressure, Temperature) values, if data reporting to other standards
is required. Optionally, you can choose the data to be reported as volumetric flow at ambient
conditions. In such a case, accessory measurements of the ambient (Pressure, Temperature)
are required. We offer the 'AMES' meteorological sensor to provide this data automatically
when connected to a COM port.
- BB (%): the percentage of BC created by biomass burning, determined by the Sandradewi
model.
- ContTemp; SupplyTemp: control and power supply board temperatures
- Status; ContStatus; DetectStatus; LedStatus; ValveStatus; LedTemp: internal status codes for
the instrument.
- BC11; BC12; BC1; BC21; BC22; BC2; BC31; BC32; BC3; BC41; BC42; BC4; BC51; BC52; BC5;
BC61; BC62; BC6; BC71; BC72; BC7: BCn1 is the uncompensated BC calculated from the spot
1 for channel n; BCn2 is the uncompensated BC calculated from the spot 2 for channel n. BCn is
the final result for the compensated BC calculated from measurements for channel n.
____________________________________________________________________________________________________________
User's manual – Ver. 1.55 July 2017 105/146