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