Equipment and Calibration
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History
| Rec No. | Date | Loc From | Title | Loc To | Notes |
|---|---|---|---|---|---|
| 5482 | 2021-10-06 | Vaira Precipitation | Calibration | Vaira Precipitation | Tested using our new method with the peristaltic pump and 237ml of water which should result in 50 tips. I got 54 tips. I adjusted the screws two full turns CCW which should decrease the number of tips by 8-12% (4-6 tips). |
| 4123 | 2019-10-24 | Vaira Precipitation | Calibration | Vaira Precipitation | I connected the tipping bucket to a CR23x and dripped 475ml of water through the bucket which should result in 100tips. We got 103 tips. I did not adjust it. |
| 3739 | 2018-10-17 | Vaira Precipitation | Calibration | Vaira Precipitation | Got 78 of 100 tips - adjusted screws 3 turns CW |
| 2309 | 2010-09-10 | Lab none | Installed | Vaira Precipitation | Reinstalled on the Vaira tower after testing in the lab. The testing revealed that the problem was a bug in the data logger program that was recording instantaneous values instead of 30min averages. |
| 205 | 2010-09-09 | Lab none | Calibration | Lab none | During the troubleshooting, I ran 16oz (473.3ml) of water through the tipping bucket. According to the manual, this should have resulted in 100 tips. Instead I got 88 tips. I then ran 23.7ml of water that should have resulted in 5 tips and got about 4.5. I then turned the adjustment screws on the bottom two full turns clockwise and got better than five tips. I backed off the screws counter-clockwise a half turn. Now running 473.3ml of water through the tipping bucket results in 99 tips. |
| 204 | 2010-09-07 | Lab none | Troubleshooting | Lab none | Troubleshooting the bad final storage values led to the discovery of a bug in the Campbell program on the data logger. If the Totalize function is burried in a "If time is" function, it doesn't work. The follow instructions do not work.
58: If time is (P92) 1: 0 Minutes (Seconds --) into a 2: 1 Interval (same units as above) 3: 30 Then Do 59: Do (P86) 1: 10 Set Output Flag High (Flag 0) 60: Totalize (P72)^12888 1: 1 Reps 2: 57 Loc [ Precip_mm ] 61: End (P95) Instead the code should read: 58: If time is (P92) 1: 0 Minutes (Seconds --) into a 2: 1 Interval (same units as above) 3: 10 Then Do 59: Totalize (P72)^12888 1: 1 Reps 2: 57 Loc [ Precip_mm ] |
| 203 | 2010-09-02 | Vaira Precipitation | Removed | Lab none | This tipping bucket was removed from the Vaira tower to troubleshoot a problem that was causing the total number of tips not to be saved in the final storage location. |