Morning Prep:
Cleaned critical orifices and impactor
Looked into ordering new critical orifices from TSI
Cleaned valve on dilution system
Replaced filter on the dilution system
Ran a test. CPC 3775 continues to have flow rate error. Cleaned critical orifice more thoroughly.
Added new sampling intake for CPC 3775.
CPC 3771 initial concentrations of test ∼14,000-16,000 #/cm3
Suspect system is sampling air run back through classifier.
Ratio tests (Start time: 14:37 UTC):
1.7 background to 8,100 to 8,200
1 background to 4,800
1 background to 9,000
1.7 background to 5,290
1.7 background to 10,000
1 background to 5,880
Summary: 1:5,000 to 1:10,000
* Run 14: SMPS_20220316_Run14
Start Time: 15:00 UTC
CPC concentration: ∼5000 #/cm3
APS Pattern: Flat (∼4 #/cm3)
Error caused by Delene at 15:03 UTC. Accidental. High values not coming down. Injested air from garage by accident.
System temps ∼185 F.
* Run 15: SMPS_20220316_Run15 (IPC 2022)
Instrument Start Time: 15:25 UTC
Burning acetone. CPC concentrations at 1000 #/cm3 and falling.
Taking its time decreasing. Fans not on yet.
Turning on one fan while burning acetone caused CPC concentrations to skyrocket.
Sampling Start Time: 16:05 UTC
Valve Opening: 16:08 UTC
CPC Concentration: A curve to 5,500 #/cm3
CPC Concentration after valve switch: 20,000 #/cm3
APS Pattern: Flat. Peaks at 3 #/cm3
System tunnel temp: 190 °F
* Run 16: SMPS_20220316_Run16 (DMI)
Instrument Start Time: 16:32 UTC
Purge Time: 16:39 UTC
CPC 3771: 21, CPC 3775: 70,000. Results in a 1:3,333 ratio.
30s response time for CPC 3771, likely due to thin tubing.
Fans On: 16:48 UTC
Delene changed tubing lines at 16:53 UTC, caused CPC 3771 to spike to 27,000.
One fan off at 17:01 UTC.
Filter turned on at 17:04 UTC.
Filter turned off at 17:05:30 UTC.
Last fan died at 17:06:30 UTC.
* Lunch Run: SMPS_20220316_Lunch (Ambient Air through CPCs)
CPC 3771: 2.5-3.0 #/cm3 (18:14 UTC)
CPC 3775: 20,000 #/cm3 (18:14 UTC)
Dilution ratios wildly inconsistent.
* Run 17: SMPS_20220316_Run17 (Aged IPC 2021)
Insruments On:18:40 UTC
Filter On: 18:41 UTC
Initial CPC peak (3771) at 10,000, stabilizing at 7,000-8,000 #/cm3.
Internal tunnel temps around 190 °F.
* Run 18: SMPS_20220316_Run18 (WMI High Flow Rate)
Instruments On: 18:56 UTC
Adding another pump to regulate the flow rate. Also removing critical orifice that could possibly be plugged/dirty.
At 19:24 UTC, CPC 3771 dilution is at 30 #/cm3. Off diltion, settling at 29,000 - 30,000 #/cm3.
Closed a valve. Down to 20,000 #/cm3 at 19:27 UTC. Reopened valve, back up to 25,000 - 30,000 #/cm3.
At 19:36 UTC, back on dilution. (4-7 #/cm3)
At 19:37 UTC, fans back on.
At 19:38 UTC, filter on.
At 19:40 UTC, flow rate of generator fluctuating.
At 19:42 UTC, CPC 3771 at 7,800 #/cm3.
Turned off generator at 19:47 UTC. APS registered large influx of large particles.
* Run 19: SMPS_20220316_Run19 (WMI High Flow Rate)
* Run 20: SMPS_20220316_Run20 (Bizmuth)
Instrument Start Time: 20:40 UTC
CPC 3771 Initial Concentration: 9000-10,000 #/cm3
Sharper peaks on APS (∼0.6 μm) at 8 #/cm3.
CPC concentration eventually flattens to 7000 #/cm3.
* Run 21: SMPS_20220316_Run21 (Pump Tests)
Fans seperate, not pulling any air into generator/sampler.
Start Time: 21:14 UTC
Pump is low, not pulling nearly enough.
21:20 UTC: Pulling aerosol through generators via fans.
CPC 3771 Diluted. Peaking around 7,000 #/cm3.
Wind kicked generator off at 21:23 UTC.
Generator back online at 21:25 UTC.
Delene cuts run short so he can add another pump to the system. Pull is too low (> 2L/min)
* Run 22: SMPS_20220316_Run21 (WMI High Flow Rate)
Testing two pumps together to increase pull to instruments.
Not looking good. Only 1 L/min.
Instrument Start Time: 21:43 UTC
21:50 UTC: Pumps total pull only 0.999 L/min
21:55 UTC: Generator On
21:56 UTC: Filter On
21:57 UTC: Peak at 13,000 #/cm3
22:00 UTC: Peaks at 60,000 #/cm3
22:07 UTC: Lowering generator flow rate
Averaging between 50,000 and 55,000 #/cm3
One fan died at 22:14 UTC