==== March 16 2022 ====

**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
       * 30 background to 14,000. Not close to 1. No consistency in dilution ratios yet.
   * 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. 
         * 18:33 UTC: 3771 back on dilution, around 0.2 #/cm3. No consistency.

* **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)
   * //Instrument, Generator Start Time//: 20:00 UTC
   * Generator turned off at 20:03 UTC.
   * Inconsistent 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