| DQR ID | Subject | Data Streams Affected |
|---|---|---|
| D000801.3 | SGP/AOS/C1 - Nephelometer failure | sgpaosC1.a0, sgpaosauxC1.a0 |
| D000801.4 | SGP/AOS/C1 - Nephelometer failure | sgpaosC1.a0, sgpaosauxC1.a0 |
| D000801.5 | SGP/AOS/C1 - Nephelometer failure | sgpaosC1.a0, sgpaosauxC1.a0 |
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 06/02/2000 | 1842 | 06/16/2000 | 2234 |
| Subject: | SGP/AOS/C1 - Nephelometer failure |
| DataStreams: | sgpaosC1.a0, sgpaosauxC1.a0 |
| Description: | An inexperienced AOS technician inadvertently closed off the flow to the dual-nephelometer humidograph system during a Friday Preventative Maintenance. This resulted in liquid water getting into the humidified nephelometer. Flow was restored to the system on Monday, but the nephelometers were producing strange data. A number of tests were performed over the next few days to remotely troubleshoot the situation, to no avail. Eventually, the decision was made to pull both nephelometers and return them to Boulder for repair. This DQR refers only to the reference nephelometer, which was out of service for 2 periods due to 2 separate problems. This DQR is for the first period, from 000602 (1842 GMT) to 000616 (2234 GMT). Light absorption are invalid whenever the reference nephelometer is not operational, because those data are required for correction of the absorption data. |
| Measurements: | sgpaosauxC1.a0:
sgpaosC1.a0:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 06/20/2000 | 1340 | 07/03/2000 | 1833 |
| Subject: | SGP/AOS/C1 - Nephelometer failure |
| DataStreams: | sgpaosC1.a0, sgpaosauxC1.a0 |
| Description: | An inexperienced AOS technician inadvertently closed off the flow to the dual-nephelometer humidograph system during a Friday Preventative Maintenance. This resulted in liquid water getting into the humidified nephelometer. Flow was restored to the system on Monday, but the nephelometers were producing strange data. A number of tests were performed over the next few days to remotely troubleshoot the situation, to no avail. Eventually, the decision was made to pull both nephelometers and return them to Boulder for repair. This DQR refers only to the reference nephelometer, which was out of service for 2 periods due to 2 separate problems. This DQR is for the second period, from 000620 (1340 GMT) to 000703 (1833 GMT). Light absorption measurements are invalid whenever the reference nephelometer is not operational, because those data are required for correction of the absorption data. |
| Measurements: | sgpaosauxC1.a0:
sgpaosC1.a0:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 06/02/2000 | 1842 | 07/03/2000 | 1833 |
| Subject: | SGP/AOS/C1 - Nephelometer failure |
| DataStreams: | sgpaosC1.a0, sgpaosauxC1.a0 |
| Description: | An inexperienced AOS technician inadvertently closed off the flow to the dual-nephelometer humidograph system during a Friday Preventative Maintenance. This resulted in liquid water getting into the humidified nephelometer. Flow was restored to the system on Monday, but the nephelometers were producing strange data. A number of tests were performed over the next few days to remotely troubleshoot the situation, to no avail. Eventually, the decision was made to pull both nephelometers and return them to Boulder for repair. This DQR refers only to the humidified nephelometer, which was out of service for the entire period from 000602 through 000703. |
| Measurements: | sgpaosauxC1.a0:
sgpaosC1.a0:
|