Equipment and Calibration
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Equipment Entry
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Documents
Calibration: cal_Vaisala_HMP45AC_snU3030041_19990827.pdfCalibration: cal_Vaisala_HMP45AC_snU3030041_20010626.pdf
Calibration: cal_Vaisala_HMP45AC_snU3030041_20030304.pdf
Calibration: cal_Vaisala_HMP45AC_snU3030041_20091201.pdf
Report: HMP RH and AirT Comparison 12-2017 - 2017-12-18
Report: HMP intercomparison - BA 11/2021 - 2021-11-04
History
| Rec No. | Date | Loc From | Title | Loc To | Notes |
|---|---|---|---|---|---|
| 6411 | 2023-09-18 | Lab none | Loaned | Loaned none | Loaned to Gracie Pearsall at UCSC for a informational display at Elkhorn Reserve |
| 5630 | 2021-12-13 | Lab none | Tested | Lab none | Tested this sensor against an HMP155 on the lab bench. Both sensors were aspirated. Temperature data is inconsistent, sometimes matching the HMP155 and sometimes not. Do not use this sensor. |
| 5616 | 2021-12-01 | Bouldin Alfalfa none | Removed | Lab none | Removed from the BA HMP intercomparison from wiring position DE1/2 because it was giving bad data. It was brought back to the lab for testing. |
| 5586 | 2021-11-18 | Lab none | Installed | Bouldin Alfalfa none | Installed on BA tower for an HMP45 intercomparison with the tower HMP155. |
| 5450 | 2021-09-03 | Bouldin Alfalfa | Removed | Lab none | Removed from BA bouncer tower, where it was the lower T/RH sensor. It was replaced by sn T2820183. |
| 5447 | 2021-08-04 | Lab none | Installed | Bouldin Alfalfa none | Installed on the BA bouncer tower next to the lower sonic for the advection experiment. It was wired to U11/U12. |
| 5423 | 2021-08-02 | Lab none | Tested | Lab none | Ran for a few hours in the lab in the afternoon next to another HMP45, sn T1250012. There is an offset in RH and AirT, but they track ok. |
| 4159 | 2019-11-19 | Sherman Barn RH & Temp | Removed | Lab none | Removed from SB and brought back to the lab for further testing. This sensor had some spikes in late September and starting mid-Nov hovered around 2degC. |
| 3587 | 2018-07-11 | Lab none | Installed | Sherman Barn RH & Temp | Installed at Sherman Barn on the scaffolding frame in the southwest corner of the cow fence. This is the initial set up of the site. |
| 3254 | 2017-12-19 | Twitchell Alfalfa | Removed | Lab RH & Temp | Removed from the HMP inter-comparison at Twitchell Alfalfa |
| 3271 | 2017-12-18 | Lab none | Installed | Twitchell Alfalfa | Installed at Twitchell Alfalfa for an inter-comparison of HMPs |
| 3225 | 2017-12-08 | Lab none | Repair | Lab none | The circuit board was corroded and the red wire was broken at the board connection. Joe repaired it. This sensor needs a new o-ring before going outdoors. |
| 2814 | 2017-06-01 | Tonzi-Tower | Removed | Lab none | Removed from the lowest position of CO2 profile system on the Tonzi Tower. At least one has not been working and all need to be compared against each other for drift. |
| 1680 | 2015-01-21 | Lab none | Installed | Tonzi-Tower | Installed in the lowest position in the Tonzi Tower profile to replace sn T0720012 for testing/repair. |
| 455 | 2011-11-22 | Mayberry Tower | Removed | Lab none | Removed from the Mayberry tower because the cable was not long enough for the new higher mounting of the eddy sensors. Replaced by HMP45 sn U2120013. |
| 235 | 2010-10-14 | Lab none | Installed | Mayberry Tower | Installed as part of the tower at the new Mayberry wet land site. |
| 218 | 2010-09-29 | Moffett Field | Removed | Lab none | Removed with protable tower at end of zero flux study at Moffett Field. |
| 217 | 2010-09-23 | Lab none | Installed | Moffett Field | Installed on a portable tower at Moffett Field for a zero flux study |
| 28 | 2009-12-21 | Lab none | Tested | Lab none | I tested the HMP45AC on a CR1000 against HMP45C sn U2120013. No problems found. See file HMP45A_CalCheck.xls. |
| 4 | 2009-12-01 | Factory | Calibration | Lab none | Vaisala factory calibration - certificate on file.
Problem: The probe was out of tolerance. The modified probe cable was not working. Intermittent readings. Action: Probe was calibrate. 0...100% = 0...1V, -40...+60C = 0...1V |