Instrument - Cavity attenuated phase shift Spectroscopy
Short name:
CAPS NO2 monitor (near)
Full name:
Cavity attenuated phase shift Spectroscopy
What is being measured:
NO2
Sampling Protocol:
Online
Manufacturer:
Aerodyne Inc.
Model:
N/A
Instrument year
:
None specified
Data recording software:
Data analysis software:
Raw data time resolution:
1s
Analysis data averaging:
Detection limit:
0.1 ppb (10 s)
Sensitivity to temperature (and correction method, if applicable):
:
Sensitivity to relative humidity (and correction method, if applicable):
:
Sampling method:
Direct sampling
Sample preparation method:
Sample residence time (chamber to instrument) (seconds):
Length of tubing (cm):
4663
Instrument flow rate:
900 ccm
Tubing inner diameter:
1/4 inch
Tubing material:
FEP Teflon
Chemical identification method:
Data analysis method:
The software gives the NO2 concentration in ppb
Quantification method:
Calibration method:
Calibration with standard NO2/N2 gas with uncertainty better than %10 (preferably %5)
Calibration drift estimate:
Medium (on the order of days)
Calibration schedule:
As Needed
Uncertainty estimation method:
Standard deviation of the time averaging data
Known interferences:
Baseline drift
Link to supplemental information:
Additional notes:
Measurement uncertainty:
NA
Measurement units:
ppb