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Product Overview
The Diffusion Size Classi
fi
er miniature testo DiSCmini is a handheld instrument for the measurement of nano-
particle number concentration , mean diameter and lung-deposited surface area LDSA with a time resolution
of up to 1 second. The measuring principle is based on electrical charging of the aerosols. The small size of
the Testo DiSCmini makes the instrument particularly suitable for personal carry-on measurement campai-
gns. The device is battery powered with a lifetime of up to 8 hours; data is recorded on a memory card, and
transferred to an external computer via USB cable.
testo DiSCmini is based on the electrical charging of the aerosol. Positive air ions generated in a corona
discharge are mixed with the aerosol. The charged particles are then detected in two stages by electrome-
ters. The
fi
rst detector stage is a pile of steel grids; small particles will preferably deposit on it by diffusion and
detected as an electrical current. The remaining particles end up in a second stage, the
fi
lter stage, and are
also detected as an electrical current. The ratio of these two currents is a measure of the average particle
size determined during the instrument calibration. Because the charge per particle is a function of particle
diameter, once this is known, the particle number concentration can be computed from the total current
detected together with the
fl
ow rate of the instrument.
Unpacking the Instrument
Use the information in the following packing list to check if your delivery is complete:
• Diffusion Size Classifier Miniature
• Battery charger Mascot (enables also long-term measurements)
• Instruction manual
• Quick guide
• SD-Card
• Software (Testo DiSCmini data analysing tool) is delivered on SD-Card
• SD-Card Reader
• carrying bag
• carrying case
• Inlet tube connector
• Impactor (mounted)
• Tube for impactor
• Calibration sheet
• Country specific power cord
If anything is missing or appears to be damaged, contact [email protected]
