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Surface Area Screen (Main)
SA [um2/cm3]
H
27.61 74%
SA [um2/cm3]
H
27.61
74%
The surface area screen displays the active surface. A quantity that can be described as „alveolar lung-de-
posited surface area“ (A-LDSA). This quantity is mainly in
fl
uenced by particle concentration and particle
aerodynamic mobility (e.g. size), as well as lung activity of the inhaling subject. As this parameter cannot be
generalized easily, IRCP devoloped a model to estimate an average A-LDSA out of particle size and con-
centration. During calibration, this model is used to calculate a calibration constant correlating this estimated
A-LDSA with the total current signal. The resulting estimation for A-LDSA is given in here.
Advanced Mode Navigation
To access or exit the advanced menu described below, press 3 sec. the “menu” button.
Press on “menu” to jump from one screen to the other.
Charger Screen (advanced)
3244V
9nA H
OFF HIGHVOLT ON
3244V 9nA
H
OFF HIGHVOLT ON
The charger screen informs you about the voltage and the charging current applied on the corona charger
that is used to charge the particles.
By pressing the left or right arrow buttons located below the off and on display, you can turn the charger off
or on. When the charger is turned off, the testo DiSCmini operates as an aerosol electrometer if you add up
the two stage currents.
Flow Screen (advanced)
The
fl
ow screen informs you about the status of pump. The
fl
ow is displayed on the upper left hand side. Note
that o.99L corresponds to the factory-calibrated
fl
ow of 1 liter per minute.
By pressing the left or right arrow buttons located below the off and on display, you can turn the pump off
or on.
0.99L FLOW
H
OFF PUMP ON
0.99L FLOW
H
OFF
PUMP
ON
