Instrument - Scanning Mobility Particle Sizer
Scanning Mobility Particle Sizer
What is being measured:
Particle Number&Volume Concentration
Data recording software:
Data analysis software:
Custom Excel Program
Raw data time resolution:
Analysis data averaging:
60 ~ 120s
#: 0.108 cm-3; V: 0.001 um3/cm3
Sensitivity to temperature (and correction method, if applicable):
Sensitivity to relative humidity (and correction method, if applicable):
Direct gas sampling
Sample preparation method:
Sample residence time (chamber to instrument) (seconds):
Length of tubing (cm):
Instrument flow rate:
Sheath 2.5 lpm; Main 0.25 lpm
Tubing inner diameter:
1/4'' OD; 0.152'' ID
Chemical identification method:
Data analysis method:
The SMPS data that were recorded in scanning mode are analyzed using a custom Excel script. Particle size distribution, number/volume concentration as a function of time are displayed. Custom wall loss fitting time is available to do wall loss correction as needed.
Signal strength is converted to partial number/size distribution by designed transfer functions.
Standard particles(created by standard PSL solution) with a certain size range are sampled and detected. The calibration factor will be calculated based on the difference.
Calibration drift estimate:
Uncertainty estimation method:
Duplication of the same experimental conditions.
Link to supplemental information:
(a) Local_Time (N/A); (b) Experimental_Time (N/A); (c) PMNUM (+/- 8%); (d) PMVOL (+/- 8%); (e) PMNUMCOR (+/- 8%); (f) PMVOLCOR (+/- 8%)
(a) Local_Time (N/A); (b) Experimental_Time (min); (c) PMNUM (cm-3); (d) PMVOL (um3/cm3); (e) PMNUMCOR (cm-3); (f) PMVOLCOR (um3/cm3)