Short name:
SMPS

Full name:
TSI Scanning Mobility Particle Sizer

What is being measured:
Particle size distributions

Sampling Protocol:
Online

Manufacturer:
TSI

Model:
3080 (Electrostatic Classifier), 3010 (CPC), 3081 (DMA)

Instrument year :
2012

Data recording software:
AIM

Data analysis software:
Igor (custom procedure)

Raw data time resolution:
2.5 min

Analysis data averaging:

Detection limit:
1 particle/cc (mass, volume, surface area is size-distribution dependent)

Sensitivity to temperature (and correction method, if applicable): :

Sensitivity to relative humidity (and correction method, if applicable): :

Sampling method:
1.87 LPM (0.3 lpm to instrument, 1.57 lpm bypass)

Sample preparation method:

Sample residence time (chamber to instrument) (seconds):

Length of tubing (cm):
2500

Instrument flow rate:
0.3 lpm

Tubing inner diameter:
0.16 in

Tubing material:
Stainless Steel

Chemical identification method:

Data analysis method:
SMPS data exported from TSI AIM software to text file as dN/dLogDp (particles per cm^3). Text file loaded by custom Igor loader/plotter. Integrated number, surface area, volume, concentration time series calculated. Condensational sink rate coefficient calculated using size distribution and Fuchs Sutergin correction applied.

Quantification method:
AIM software

Calibration method:
Sizing checked/ calibrated with PSL calibration spheres (3 sizes: 100 – 500 nm) biannually, CPCs cross-compared biannually (factory calibration as needed, ~3 yrs)

Calibration drift estimate:
Low (on the order of weeks)

Calibration schedule:
2x/year

Uncertainty estimation method:
Standard for SMPSs (discussed in literature)

Known interferences:
none

Link to supplemental information:
This SMPS is the same as the Jimenez lab one (https://icarus.ucdavis.edu/instrument/376?organization=545).

Additional notes:
Typically particle scans are ~10-600 nm.

Measurement uncertainty:
NA

Measurement units:
(a) time (local) (b)integrated number concentration (cm-3) (c) integrated volume concentration (um3/cm3) (d) integrated surface area concentration (um2/cm3)