TSI Instruments 3082, Руководство по эксплуатации и обслуживанию

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Unpacking and Setting Up 2-15
Installing an Impactor
The Electrostatic Classifier is shipped with an inlet adapter in place,
protected by a vinyl cap.
Note : You can run the instrument without using the inlet adapter. If you
want to connect the classifier to tubing, the adapter must be
in place.
To remove particles larger than the size range of interest and/or to
measure aerosol inlet flow to the classifier, the inlet adapter should be
removed and an impactor should be installed. The impactors are provided
in the 3082 Accessory Kit (shipped with the instrument). The impactor
nozzle size and aerosol flow rate determine the largest particle size that
can be sampled within each SMPS spectrometer measuring size range.
The impactors and inlet adapter have a similar appearance but the
impactors differ from the inlet adapter in the following ways:

Each impactor nozzle incorporates an orifice that determines its
cut size.

Each impactor nozzle is engraved with a serial number and orifice size.

Each impactor has a memory chip (EEPROM) on the side (containing
calibration information) which is read by the classifier when installed.
The inlet adapter does not have a memory chip.
The impactors use a removable impaction plate. The impaction plate can
be used with any of the three provided impactor bodies.
Do not insert the
impactor body without the plate; if you do, the classifier does not measure
aerosol flow rate accurately and you see a
“Low aerosol flow” warning.
Refer to Table 2-
10
to select the correct impactor body size. The size
and serial numbers are inscribed on the tubes.
Table 2 - 10
Flow Ranges for Impactor Bodies
Aerosol Inlet Flow Range (L/min) Nozzle Size (cm)
0.2 to 0.8 0.0457
0.3 to 1.0 0.0508
0.6 to 2.1 0.071