MAGEE Scientific Aethalometer AE33 User Manual page 47

Aethalometer
Model AE33
LED status
TA status
Tape sensor left
Tape sensor
right
TapeAdvance
left
FlowƩ
Flow1
Pump (ref. val.)
Flow sensor Ʃ
Flow sensor 1
Chamber status
Chamber
position
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User's manual – Ver. 1.55
reading Neutral Density Filters (NDF0 to NDF3), status 59
indicates an error has occurred during NDF measurements.
0 – Led driver initialization ERROR; 10 – Led driver OK
0 – Ready; 255 – Busy
Tape sensor Left and Tape sensor right indicate how much
tape is on either spool. These numbers should not be
interpreted as number of Tape Advance left!
This value gives a rough estimate of how many tape advances
are left until the end of tape. It is the same value as it appears
on the Home screen.
FlowƩ is the measured common flow in mlpm, it should be
similar to the selected flow rate value (i.e. when flow rate of 5
LPM is set the FlowƩ should be around 5000 mLPM)
Flow1 is flow measured through spot 1 and should be around
2/3 of the total flow.
The pump's reference value is used to set the pump to
operate at desired flow. The value may vary between
different instruments but should be roughly around 580
when the flow is set to 5 LPM. The value is similar to Flow
sensor Ʃ value, it may change after a flow calibration, and it
may vary slightly during each tape advance period.
Flow sensor Ʃ and Flow sensor 1 indicate performance of the
two installed flowmeters. When flow is set to 0, the value
should be 200 +/- 30.
Chamber status values 10, 11 or 12 indicate if chamber is in
"Chamber home", "Chamber tape" or "Chamber calibrate"
status, respectively. Chamber status 20 means that the
chamber was not calibrated; chamber status 255 indicates
the chamber is being calibrated (busy).
Chamber position values indicate chamber position. Values
between 230 and 310 indicate "Chamber Home", between
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