20200525 Monthly site visit (refer to notes)

Notes

Sample filters on NO, NOx, NOy, CO and O3 were replaced on today 5/25/2020
Rain gauge cleaned of debri
Anemometer propellor rotating smoothly

NOy converter temperature: 320 deg C 
Work orders were submitted to remove small tree in front of trailer and fix earth ground copper wire that got damaged by lawn mowers

NO, NOx, NOy, O3, O3 and CO instrument diagnostics

NO sample flow: 0.951 l/min
NO ozonator flow: ok 
NO cell pressure: 240.2 mm Hg
NO PMT temperature: -2.4 deg C
NO PMT voltage: -905 V
NO alarms: Converter temperature (NA)

NO chamber temperature: xx deg C

NOx sample flow: 0.929 l/min
NOx ozonator flow: ok 
NOx cell pressure: 94.6 mm Hg
NOx PMT temperature: -2.5 deg C
NOx PMT voltage: -807 V
NOx alarms: Converter temperature (NA); Pressure low; Sample flow high

NOx chamber temperature: xx deg C

NOy sample flow: 1.384 l/min
NOy cell pressure: 268.9 mm Hg
NOy PMT temperature: -1.0 deg C
NOx PMT voltage: -821 V
NOy alarms: Converter temperature (NA); Sample flow high 

NOx chamber temperature: xx deg C

O3 sample flow: cell A - 1.507 l/min (bad sensor - overscale); cell B - 0.704 l/min
O3 pressure: 748.7 mm Hg
O3 intensities: cell A 48,998 Hz; cell B 36,179 Hz
O3 alarms: Flow A high; Intensity B low 38,120Hz (Range 45,000-150,000 Hz)
O3 lamp temp.: xx deg C

CO sample flow: 0.507 l/min
CO pressure: 739.3 mm Hg
CO alarms: none

CO S/R ratio: 1.163866

CO AGC intensity: 198,707 Hz
CO Bias voltage: -110.0 V
CO Chamber temp.: 46.2 deg C

CALIBRATION/SPAN CYLINDER PRESSURES (replaced NO cylinder with MAQL multi-blend cylinder)
NO cylinder pressure: 890 psi     NO cylinder outflow pressure: 30 psi
NO2 cylinder pressure 1650 psi:     NO2 cylinder outflow pressure: 41 psi
CO cylinder pressure: 1750 psi     CO cylinder outflow pressure: 41 psi
CO2 cylinder pressure: 2000 psi     CO cylinder outflow pressure: 22 psi

20200525 Replaced CO IR source

20200514 Changed NOxy slopes (refer to notes)

- slopes for NO, NOx and NOy were changed ; the slopes were changed as follows: NO 0.655, NOx 2.847, NOy 1.795
-MAQL multiblend cylinder was used to perform multipont calibration yesterday
- " " " will be left at site until new the a new [NO] gas cylinder refilled by Praxair
- only multipoint calibrations will be performed with MAQL calibration cylinder to conserva calibration gas

20200513 Installed MAQL cal cylinder and multipoint calibrated NOxy (refer to notes)

- also removed single gas [NO] cylinder and took it to 403; tank was drained for packaging because it will be shipped to get refilled