Equipment and Calibration
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Equipment Entry
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Documents
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Report: HMP RH and AirT Comparison 12-2017 - 2017-12-18
Report: HMP155 lab and Oxford test - 2019-10-01
History
| Rec No. | Date | Loc From | Title | Loc To | Notes |
|---|---|---|---|---|---|
| 4612 | 2020-07-09 | Loaned | Disposed | Disposed | Given to Sabina of Hydrofocus. The DWR grant ended at the end of June 2020, and Bryan requested we hand off a tower to Hydrofocus. |
| 4582 | 2020-07-09 | Sherman Barn RH & Temp | Removed | Loaned none | Removed from Sherman Barn with its decommissioning and given to Sabina of Hydrofocus. The DWR grant ended at the end of June 2020, and Bryan requested we hand off a tower to Hydrofocus. |
| 4277 | 2019-12-16 | Lab none | Installed | Sherman Barn RH & Temp | Installed at SB to replace sn sn U3030041, which had been removed and brought back to the lab for testing. |
| 4187 | 2019-10-21 | Lab none | Calibration | Lab none | Air T calibration: y=0.94336x+0.71025, R2=0.99 RH calibration: y=1.0497x+2.8693, R2=0.99 x is the sensor output, y is the calibrated value |
| 4186 | 2019-10-15 | Lab none | Tested | Lab none | Tested at Oxford Tract for a week against reference sensor HMP155 sn R0360206. See RT Report "HMP155 lab and Oxford test": https://nature.berkeley.edu/biometlab/bmetdata/rtreport.php?screen=view&id=28 See linear regression calibration in separate equipment history entry. |
| 3986 | 2019-05-22 | Lab none | Tested | Lab none | I removed the power cord and soldered on an extension cord. Tested in the lab with radiation shields and fans, and compared well with two HMP60s sn L1740398 (Campbell has OK'd this one) and sn G4540023. This sensor is probably ok, but maybe we can test it with a reference AirT/RH sensor from AMP. |
| 3935 | 2019-04-24 | Lab none | Tested | Lab none | Tested overnight in the lab. This sensor has an extension cable soldered on. Didn't see any spikes, and the numbers seem reasonable. However, the control wire seems extraneous--the AirT and RH numbers seem ok even when the control wire is not connected to the datalogger, even though the sensor still has the power control board. More testing needed before we deploy it. |
| 3852 | 2019-01-24 | Sherman Wetland RH & Temp | Removed | Lab none | Brought back to the lab from SW for inspection b/c of data drops/spikes. It was replaced by sn W0730036. |
| 3683 | 2018-08-23 | Lab none | Installed | Sherman Wetland RH & Temp | Installed at SW to replace the other HMP45 with a too short cable. Mounted in the original location. 1% slope in T and 6% slope in RH from TA inter-comparison. |
| 3257 | 2017-12-19 | Twitchell Alfalfa | Removed | Lab none | Removed from the HMP inter-comparison at Twitchell Alfalfa |
| 3272 | 2017-12-18 | Lab none | Installed | Twitchell Alfalfa | Installed at Twitchell Alfalfa for an inter-comparison of HMPs |
| 2816 | 2017-06-01 | Tonzi-Tower | Removed | Lab none | Removed from the higher middle 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. |
| 970 | 2013-04-19 | Lab none | Installed | Tonzi-Tower | Installed on the Tonzi tower at the 2nd from top (6.0m) CO2 profile inlet location. Wired to the AM16/32 multiplexor connected to the tower top CR23X |