20181221 LT Instruments were turned off

20181211-12 Quarterly Calibration

Installed vacuum pump on NOy instrument because new one that was installed ceased. (Sergio)

Performed Quarterly Calibration for O3, and CO on 12/11/18 and NOx, NOy on 12/12/18.

Launch Trailer Slopes

O₃                    0.98                 (prev. 1.026)

CO                   0.85                 (prev. 0.85)

NO                   0.447               (prev. 0.41)

NOx                 0.95                 (prev. 0.98)

NOy                 1.090               (prev. 1.097)

NOx CE           72.276             (prev. 73.122)
                         Slope 0.75       (prev. 0.75)

NOy CE           90.73               (prev. 97.93)
                         Slope 0.91       (Prev. 0.98)

Anemometer needs to be rebuild (Sergio)

20181206 LT NOy turned off because pump failed yesterday

20181026 LT Instrument sample filters replaced

2018 LT NOy pump replaced

20180917 LT quarterly calibratio

CO,O3,NOx, NOy quarterly calibration
replaced Teflon filters
CO, 1800
NO: 500
NO2: 1700

20180911 LT Ozone instrument turned on. (additional notes within)

- Ozone instrument stopped streaming data on Sunday, 9/9/2018 because it turned "itself" off. On Monday morning the power was cycled on and off, and it turned on.

20180806 LT Replaced sample pump diaphragm

20180806 LT CO sample flow very low

Sample flow decreased substantially on Saturday afternoon about 6 PM CST, so the instrument was set to "maintenance mode."

20180730 LT Performed unscheduled multipoint calibration

Note: NOxy instruments were multipoint calibrated because the NO instrument spans decreased. The slopes will calculated and compared to the latest calibration and adjustment will be made accordingly.

20180719 LT site visit

Alarms:
42C (top) NO-NO2-NOx alarm:
1. Converter temp low, 0 C/300 C minimum
42i-TL NO-NO2-NOx alarms:
1. Low pressure: 147 mmHg/200 mmHg minimum
2. Low flow: 0.702 L/min / 0.750 L/min minimum
42C (bottom) NO-NO2-NOx alarms:
1. Converter temp low, 0 C/300 C minimum
2. Sample flow low: 0.156 LPM/ 0.200 LMP minimum

Cylinder pressures:
CO2: 2.076%, 2000 psig
NO: 4.95 ppm, 500 psig
CO: 25.90 ppm, 1750 psig
NO2: 4.91ppm, 1740 psig

-Changed particle sample filers
-Cleaned cooling fan filters
-Checked the compressor drain
-Checked anemometer for bad bearings
-Checked vacuum pumps for chafing tubing
-Checked that molybdenum NOy converter temp is holding at 320 C
-Replaced IR sensor in CO instrument
-Replaced O3 flow sensor

20180711 Ozone instrument was turned back on about noon because instrument power was off.

Ozone data stopped logging about 4 am cst

20180530 Quarterly calibration

Quarterly calibrations were performed
Teflon filters were replaced
Rain gauge calibration performed

20180420 Site Check

- changed sample particle filters on NO, NOx, NOy, CO, and Ozone instruments
- instrument alarms:
  NO instrument - converter temperature - NA
  NOx instrument - flow low alarm - 0.459/0.805 LPM
                                pressure low alarm - 190/148 mm Hg
  NOy instrument - converter temperature high -NA
                             -sample flow mow - 0 LPM (sensor needs to be replaced)
  Calibrator 146C - No alarms
  O3 instrument -  flow B high - 1.5 LPM (sensor will be replaced)
  CO instrument - no alarms

- Cylinder pressures - NO2 cylinder CC99506 1750 psig
                                   NO cylinder CB08891 600 psig
                                   CO cylinder CA08706 (?) psig
                         
                               

2018 Performed a manual NO cal gas multipoint

201803 NOxy span cal gas did not stop flowing and NOxy inlet calibration valve was NC when morning daily checks were done

20180402 Rebooted computer because Daqfactory stopped logging yesterday afternoon

20180330 Connected zero air from Aadco zero air system to ozone instrument zero air port

- Two Google Earth cars with NO, NO2, CO, Blach carbon and PM 2.5 parked next to site for intercomparison

20180312 Anemometer was replaced with Model 05305-AQ

- new data logger program was uploaded with appropriate propellor coefficient

20180302 NO and NOx vacuum pumps wall breaker tripped and was reset