Equipment and Calibration
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Equipment Entry
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Documents
Calibration: cal_Vaisala_HMP45_snU3030046_20031009.pdfCalibration: cal_Vaisala_HMP45AC_snU3030046_19990830.pdf
Report: HMP RH and AirT Comparison 12-2017 - 2017-12-18
History
| Rec No. | Date | Loc From | Title | Loc To | Notes |
|---|---|---|---|---|---|
| 3953 | 2019-04-29 | Lab none | Tested | Lab none | Continued testing in lab and RH is consistently bad. Do not use. |
| 3934 | 2019-04-24 | Lab none | Tested | Lab none | Tested overnight in the lab. This sensor has an extension cable soldered on. The RH was consistently 5-7% lower than the other 3 sensors (L1740398, T2130005, G4540023). I removed the extension cable, and the numbers were still low. I removed the humidity chip, and it read 150%. When I replaced the humidity chip, the RH was within 2-4% of the other 3 sensors. I added the same extension cable back on, and the numbers became low. This sensor doesn't look consistent and needs more testing before it can be deployed. |
| 3865 | 2019-01-31 | East End RH & Temp | Removed | Lab none | Removed from EE b/c RH was not working (ranged only b/t 10 and 13%). It was replaced by HMP60 sn L1740420. |
| 3850 | 2019-01-24 | Lab none | Installed | East End RH & Temp | Installed at EE to replace G4540023, which was brought back to the lab for inspection. |
| 3845 | 2019-01-23 | Lab none | Maintenance | Lab none | Spliced on a longer cable so total length is ~24'. New wiring colors are: Orange-Temperature, Blue-RH, White-SignalReference, Green-Control, Red-12V, Black-G, Bare/Shield-AG |
| 3358 | 2018-03-12 | Lab none | Tested | Lab none | Tested in the lab and numbers seems reasonable. |
| 3340 | 2018-03-05 | Lab none | Maintenance | Lab none | All three o-rings were replaced. Should be good to go. |
| 3310 | 2018-01-30 | Lab none | Notes | Lab none | This HMP45 needs 3 o-rings replaced before field deployment. |
| 3261 | 2017-12-19 | Twitchell Alfalfa | Removed | Lab none | Removed from the HMP inter-comparison at Twitchell Alfalfa |
| 3274 | 2017-12-18 | Lab none | Installed | Twitchell Alfalfa | Installed at Twitchell Alfalfa for an inter-comparison of HMPs |
| 3087 | 2017-09-26 | East End-Temp2 RH & Temp | Removed | Lab none | Brought back to the lab with the decommissioning of the East End closed canopy temporary tower 2 |
| 2868 | 2017-06-14 | Lab none | Installed | East End-Temp2 RH & Temp | Installed on the East End Temporary Tower #2 Closed Canopy location with the initial tower set up. |
| 2690 | 2017-04-04 | Twitchell Rice RH & Temp | Removed | Lab none | Removed with the decommissioning of the Twitchell Rice site. |
| 1316 | 2013-08-28 | Lab none | Installed | Twitchell Rice RH & Temp | Installed on the Twitchell tower to replace sn U3030032 that was removed for bad RH readings. |
| 593 | 2012-05-02 | Factory | Repair | Lab none | The RH sensor and probe were replaced. A new handle was ordered. The unit was calibrated. |
| 576 | 2012-03-28 | Lab none | Shipped | Factory | Sent to Vaisala for repair. Unreasonable analog readings, some corrosion on circuit board. |
| 266 | 2011-01-18 | Twitchell Rice RH & Temp | Removed | Lab none | This sensor was removed from the Twitchell tower because it was giving bad readings. |
| 267 | 2009-04-03 | Lab none | Installed | Twitchell Rice RH & Temp | This sensor was installed with the new eddy tower at Twitchell Rice. |
| 4815 | 2002-06-06 | Vaira RH & Temp | Removed | Lab none | Removed from Vaira for calibration. Replaced by sn W0730037. |