teledyne api 640x field comparison with the thermo 1405df ...€¦ · 21/05/2019 · troost 640x...
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Teledyne API 640x Field
Comparison with the Thermo
1405DF, 1405F and R&P 2025 FRM
Dustin KueblerEnvironmental Service Program
Air Quality Monitoring Section
May 21, 2019
St. Louis, MO
1
Theory of Operation• Achieves a linear (non ambiguous) signal
• Provides both high resolution and wide particle size range
• PM Mass is calculated using a sophisticated mass conversion algorithm based upon years
of proven ambient comparability assessments with Reference sampler data
• Only made possible with fundamentally accurate and high resolution particle size
measurements
Polychromatic Light
– T640
Monochromatic
(660nm laser) Light –
conventional
scattering
Based on Lorenz-Mie theory of scattered light analysis
Scattering vs Particle Size Uncertainty
2
3
640x Flow Path
API 640X
4
Maintenance schedule for 640x
5
BiweeklyFlow checks, pressure, temperature (cannot calibrate temperature
because the engineers say they are never wrong)
MonthlyLeak check (or as needed)
Spandust check (or as needed)
6 monthsChamber cleaning-we do it every 5 or 6 spandust checks (or as needed)
AnnuallyChange DFU filter and the bypass flow inline filter (or when pump PWM
approaches 80%)
640x Installation dates
6
Blair St. (St. Louis)Blair Primary December 19, 2017
Blair Collocated February 21, 2018
Troost (Kansas City)Data collection started on February 26, 2019
Problems/Issues with 640x
7
Flow decrease due to clogged inline filters
Clean the optics chamber due to Spandust
contamination approximately every 6 Spandust
checks-this has been more lately
Streamline Pro decreases flow of instrument during
checks so use Alicat, BGI or Streamline flow devices
If the instruments start drifting apart, clean the optics
chamber
No pump problems yet
Instrument locked up but was fixed with a firmware
update
8
0
5
10
15
20
25
30
Blair St. PM2.5 DF vs. 2025FRM Daily Averages
PM25FEM DF
PM2.5 FRM2025
%CV=11.51
0
5
10
15
20
25
30
35
Blair St. 640x vs. 2025FRM Daily Averages
PM25FEM T640x
PM2.5 FRM 2025
%CV=10.16
9
0.0
5.0
10.0
15.0
20.0
25.0
30.0
35.0
Blair St. 640x vs. DF PM2.5FEM Daily Averages
640pm25
PM25FEMDF
%CV=3.69 640x vs. DF
100
5
10
15
20
25
30
35
1/2/2018 2/2/2018 3/2/2018 4/2/2018 5/2/2018 6/2/2018 7/2/2018 8/2/2018 9/2/2018 10/2/2018 11/2/2018 12/2/2018
Blair St. PM2.5 DF, FRM, 640x Pri., and 640x Coll.
PM25FEM DF
PM2.5 FRM 2025
PM25FEM T640
PM25FEM WW-T640
11
-7
-6
-5
-4
-3
-2
-1
0
1
2
3
4
12/26/2018 1/5/2019 1/15/2019 1/25/2019 2/4/2019 2/14/2019 2/24/2019 3/6/2019 3/16/2019 3/26/2019 4/5/2019
Blair St. T640x minus WWT640x, 1-hour Average Concentrations
Difference
1/25/19 Check, PMT check and PMT cleaning
2/6/19 Check
2/20/19 Check and PMT check
3/5/19 Check
3/19/19 Check, PMT check and PMT cleaning
12
Troost
13
-10
0
10
20
30
40
50
60
2/14/2019 2/24/2019 3/6/2019 3/16/2019 3/26/2019 4/5/2019 4/15/2019 4/25/2019 5/5/2019 5/15/2019 5/25/2019
Troost 640x vs. 1405F 1hr. PM2.5 Feb. 26, 2019 to May 13, 2019
640X PM2.5
1405F PM2.5
14
0
5
10
15
20
25
14-Feb 24-Feb 6-Mar 16-Mar 26-Mar 5-Apr 15-Apr 25-Apr 5-May 15-May 25-May
Troost 640x vs. 1405F PM2.5 24hr. data Feb. 26, 2019 to May 13, 2019
640x PM2.5
1405F PM2.5
%CV=13.4640 vs. 1405F
(Blair 640x to DF was 3.69%)
150
10
20
30
3/24/2019 3/25/2019 3/25/2019 3/25/2019 3/25/2019 3/25/2019 3/26/2019
Ug/
m3
Troost 1 hr. data 640x vs. 1405F 3/25/19
Troost 640_PM2.5 001h
Troost PM25FEM 001h
0
2
4
6
8
10
3/3/2019 3/4/2019 3/4/2019 3/4/2019 3/4/2019 3/4/2019 3/5/2019
ug/
m3
Troost 1 hr. data 640x vs. 1405F 3/4/19 (lower values)
Troost 640_PM2.5 001h
Troost PM25FEM 001h
0
10
20
30
3/7/2019 3/8/2019 3/8/2019 3/8/2019 3/8/2019 3/8/2019 3/9/2019
Ug/
m3
Troost 1 hr. data 640x vs. 1405F 3/8/19 (higher values)
Troost 640_PM2.5 001h
Troost PM25FEM 001h
References:
1) Teledyne Advanced Pollution
Instrumentation Model T640 PM Mass
Monitor Instruction Manual. 2018
16
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