| DISSOLVED OXYGEN SENSOR MAINTENANCE RECORDS | |||||
| Service Date | Sensor S/N | Instrument S/N | Location of instrument | Work performed | Comments |
| 8/13/2004 | 54228 | 24999 | PAR mezzanine (APS-PW) | Reconditioned sensor (Sec. 3 sensor manual) (no NH3/HNO3 used) | |
| 8/13/2004 | 29140 | 22978 | PAR mezzanine (APS-PW) | Reconditioned sensor (Sec. 3 sensor manual) (no NH3/HNO3 used) | erratic reading |
| 8/13/2004 | 41319 | 25003 | Bldg 450 (PW-A) | Reconditioned sensor (Sec. 3 sensor manual) (no NH3/HNO3 used) | |
| 8/13/2004 | 37957 | 23335 | Bldg 450 (PW-B) | Reconditioned sensor (Sec. 3 sensor manual) (no NH3/HNO3 used) | |
| 8/13/2004 | 41320 | 25008 | User water station (mez. col. 71.5) | Reconditioned sensor (Sec. 3 sensor manual) (no NH3/HNO3 used) | |
| 8/13/2004 | 41324 | 22902 | Bldg 450 (Degassifier outlet) | Reconditioned sensor (Sec. 3 sensor manual) (no NH3/HNO3 used) | |
| 8/19/2004 | 41325 | 25005 | PAR mezzanine (PW-A) | Reconditioned sensor and replaced instrument | Instrument 22978 found to have unstable; sensor 54228 still OK |
| 8/19/2004 | 29140 | 24999 | PAR mezzanine (PW-B) | Sensor connected to different instrument only | |
| Gray field indicates a more recent entry for sensor/instrument exists | |||||