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Press the "next" soft button until you are on the field you want to modify,
then use the "up" and "down" soft buttons to change the field's value.
Statistics screen
The statistics screen allows you to view events detected in the past. By
pressing + and – you can change the shown time axis from minute to hour
and day.
TEM probe sampling
Particles are charged electrically, measured contactlessly by induction,
and finally deposited on the TEM grid by an electrostatic field. Because
the particle concentration is measured online, the sampler automatically
determines how long it must sample for an optimal coverage of the TEM
grid (~1% of the area covered with particles). If/when you find a hotspot
where you want to take a TEM sample, insert a fresh sample, and press
the right button below the text "deposit"
Figure 5: main screen before and during TEM probe sampling
During deposition, the TEM sampler will display the percentage of the
deposition time on its main screen. If you do nothing, it will sample until
the value reaches 100%, then it will stop the deposition, and instead of the
percent-display the sampler will display done. You can also stop the
deposition manually by pressing the right button below the text "stop".
Color coding of LDSA values
The LDSA display is color-coded to provide a quick assessment of air
quality. LDSA values below 50 m
2
3
/cm
are displayed in green, values
above 250 m
2
3
/cm
in red, and values in between in yellow.
Figure 6: color coding of LDSA values
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