| Date | Description |
| June 27, 2001 | Geonor installed at NORM Mesonet site |
| August 30, 2001 | Installed pager system; removed water/bugs from bucket |
| September 18, 2001 | Sensor 17100 wire broke |
| September 19, 2001 | Sensor 17100 removed from gauge, other sensors locked, bucket emptied, purchased mineral oil |
| September 20, 2001 | Geonor, Inc. contacted - will send new sensor and charge to old account, pending warranty evaluation of sensor 1700 upon receipt |
| October 26, 2001 | Antifreeze in bucket, data logger program updated to reflect wire changes -- carried out to more significant digits; battery rewired |
| November 29, 2001 | Removed pieces of grass from bucket; installed chicken wire fence around disdrometer pit |
| January 29, 2002 | Data logger program changed to eliminate spikes in data -- calibration coefficient precision reduced |
| January 30, 2002 | Pumps disconnected to prevent freezing - data corrupted at 1511Z and 1512Z (bumped gauge) |
| February 12, 2002 | Radio transmitter removed, battery wiring rerouted |
| February 13, 2002 | Bucket emptied, Eckerd mineral oil and antifreeze added, battery replaced by larger cell, spikes continue Disdrometer and Geonor time synchronized. |
| February 25, 2002 | Transmissions not sent to OCS from 2215Z to 1500Z February 26. No spikes recorded. |
| February 28, 2002 | Gauge wiring checked for grounding problems - no obvious problems. Transmitting antenna moved roughly twenty feet farther from the gauge. Battery voltage low - AC power rerouted directly to NPIT instrument box; previously traveled from AC unit to south tower to NPIT. Transmitter replaced by lower power transmitter after noticing watchdog error messages from data logger every few minutes at roughly 55 seconds past each minute. Watchdog errors continued with new transmitter in place (~2131Z), presumably causing spikes. Data logger reset and program deleted before downloading program again and restarting data logger. Watchdog errors absent. Data from 0346Z to 1635Z 1 March 2002 show no large spikes, while spikes continue over weekend. |
| March 5, 2002 | NPIT box placed on AC power at 1447Z. No watchdog errors, spikes continue. |
| March 7, 2002 | Assigned CR10XT as slave logger and installed in gauge pit. Rewired Geonor with new wires. Connected slave logger and Geonor to DC line converted directly from AC (no battery). Slave logger and power failure plug connected directly to new CR-10WP master logger installed on south tower. New master logger powered by 12V battery charged by solar panel on south tower. Transmitter and antenna located on south tower. Disdrometer and Geonor time synchronized. |
| March 13, 2002 | Disconnected and reconnected wires in the Geonor and data loggers at ~19Z in
an effort to fix a problem where VW1 occasionally gives a value of -10^17 and there are periods of missing data. Pager bug fixed. Disdrometer and Geonor time synchronized. |
| March 20, 2002 | CR-10WP replaced by CR-10X at 1839Z; missing data possibly caused by bad logger. |
| March 23, 2002 | Removed cover and inspected bucket at 2040Z. |
| March 26, 2002 | Dropout of VW1 continues. Switched VW1 (blue) and VW2 (yellow) wires on gauge at 2359Z to determine if problem is with data logger or with VW1. |
| March 29, 2002 | Connected VW1 and VW2 wires in their proper positions at ~2000Z in anticipation of a rain event. |
| April 5, 2002 | Disdrometer and Geonor time synchronized. |
| April 8, 2002 | PIT FLOODED -- Pump had power but apparently float switch was stuck in mud and did not activate pump. Geonor was submerged and water reached 15 inches above the base of the cover. VIBRATING WIRE #2 BREAKS -- Electrical short circuit burned the tip of vibrating wire #17200. Two minutes later, the transducer assembly fell apart, much like the case on September 18, 2001. GEONOR REMOVED FROM FIELD -- An immediate result of the flood is the short circuit of the electronics. Burn marks were evident on the green junction boxes and the small wiring panel, especially at the battery voltage wire connection. Corrosion was discovered in and around all electronics except the vibrating wire casings. There was no moisture inside the intact transducers, nor was there moisture inside the green junction boxes. The Geonor was disconnected from the data logger and brought in to the office to make repairs and to determine the extent of the damage. |
| April 22, 2002 | Geonor fully repaired with new vibrating wires #37202, #37302 and #37402. Three voltage protection boxes were placed on the rim of the gauge. A new wire junction circuit was constructed and mounted on the rim. To prevent further corrosion inside the signal adapters, new signal adapters were placed inside a waterproof box, along with a recontructed circuit board containing 0.01 microF capacitors. Performed calibration with available weights. |
| April 23, 2002 | Geonor installed at field site with antifreeze and mineral oil in bucket. New waterproof signal adapter box mounted in pit. Valid data collection started at 18:18Z. Geonor and disdrometer time synchronized. |
| May 23, 2002 | Geonor and disdrometer time synchronized. Grass around disdrometer and Geonor mowed. Grass was about 2 feet high and bushes were about 4 feet high. Missed some showers during afternoon because instruments were covered to protect from cut grass. Everything in operation at 2345Z. |