MAGEE Scientific AE33 - Instrument Status

Aethalometer
Model AE33
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User's manual – Ver. 1.53 July 2015 44/75
5.2 Instrument Status
Status of the instrument is currently a status flag (16bit value) consisting of detector (bit 0,1),
flow (2,3), LED (4,5), tape advance(7,8) flags, and will be latr extended to chamber (6), valve
(9), settings (10) , and other important status notifications.
Status
relates to:
bit
position
status flag
description
binary
decimal
Operation
1 and 0
00
0
Measurement
01
1
Tape advance (tape advance, fast
calibration, warm-up)
10
2
First measurement – obtaining ATN0
11
3
Stopped
Flow
3 and 2
00
Flow OK
01
4
Flow low/high by more than 0.25 LPM or
F1 < 0 or F2/F1 outside 0.2 – 0.75 range
10
8
Check flow status history
11
12
Flow low/high & check flow status
history
LED
5 and 4
00
LEDs OK
01
16
Calibrating LED
10
32
Calibration error (at least one channel
OK)
11
48
LED error (all channels calibration error,
COM error)
Chamber
6
0
Chamber OK
1
Chamber error
Filter tape
8 and 7
00
Filter tape OK