Teledyne 633 user manual User INTERFACE, Settings and Operation, User interface and settings

Teledyne Advanced Pollution Instrumentation Model 633 Aethalometer® Black Carbon Monitor User Manual

4 USER INTERFACE, SETTINGS and OPERATION

4.1 User interface and settings

There are four 1st level menu tabs in the touch‐screen user interface: HOME, OPERATION, DATA, and ABOUT (Figure 12), described as follows:

HOME with the following parameters:

oBC ‐ the measured values for Black Carbon (measured at 880 nm) o UVPM ‐ UV particulate matter (calculated at 370 nm)

o REPORTED FLOW ‐ measured flow (in LPM) o TIMEBASE ‐ timebase setting (in seconds)

o TAPE ADV. LEFT ‐ the amount of remaining tape (in )

o STATUS – instrument status: green (all OK), yellow (check status), and red (stopped) with a Status Condition (see, 4.2 Instrument Status),

o Bottom of HOME screen shows 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 wood­smoke, 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) (see Note below on flow­reporting standard) o TimeBase (seconds)

o select one of three radio buttons:

TA ATNmax ‐ maximum attenuation at which the Aethalometer advances tape

TA INT ‐ the time interval at which the Aethalometer advances tape (hours)

TA Time ‐ the time at which the Aethalometer advances tape

oStart, Stop, Stability, Clean air, and Change Tape buttons

ADVANCED with all parameters which can be set in the Aethalometer.

LOG with the last operational reports of status, parameter changes, data download. MANUAL with basic commands, to operate hardware (solenoids, pump, chamber, TA)

Note: flow­reporting standard: These are the pressure and temperature which the instrument uses to report flow and sample volume. 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 Model 633). These values can be substituted for any other (pressure, Temp) values,

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