Instrument - Scanning Mobility Particle Sizer
Short name:
SMPS
Full name:
Scanning Mobility Particle Sizer
What is being measured:
Particle Number&Volume Concentration
Sampling Protocol:
Online
Manufacturer:
Home-made
Model:
TSI3081, TSI3771
Instrument year
:
2005
Data recording software:
Labview Program
Data analysis software:
Custom Excel Program
Raw data time resolution:
1s
Analysis data averaging:
60 ~ 120s
Detection limit:
#: 0.108 cm-3; V: 0.001 um3/cm3
Sensitivity to temperature (and correction method, if applicable):
:
N/A
Sensitivity to relative humidity (and correction method, if applicable):
:
N/A
Sampling method:
Direct gas sampling
Sample preparation method:
None
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
Tubing material:
Copper
Chemical identification method:
None
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.
Quantification method:
Signal strength is converted to partial number/size distribution by designed transfer functions.
Calibration method:
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:
No estimate
Calibration schedule:
Annually
Uncertainty estimation method:
Duplication of the same experimental conditions.
Known interferences:
N/A
Link to supplemental information:
N/A
Additional notes:
N/A
Measurement uncertainty:
(a) Local_Time (N/A); (b) Experimental_Time (N/A); (c) PMNUM (+/- 8%); (d) PMVOL (+/- 8%); (e) PMNUMCOR (+/- 8%); (f) PMVOLCOR (+/- 8%)
Measurement units:
(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)