![]() The weather overcast with a light breeze from the NNW. We successfully connected to the data logger and pulled the data. We dried out the bag to the best of our abilities and rewrapped the battery in the trash bag and stored it in a more secure location near the ladder just north of the met station. We inspected the battery, it did not appear to have leaked (we did not check the voltage). The spare battery in the trash bag had tipped over onto its side when the snow melted and slid down the slope confirmed it takes 12-15 months before the battery begins to lose power. For the next visit the team should replace the desipaks, new putty, level the rain gage (bring a level). This was likely due to a piece of the wiring diagram being exposed and wicking water in. There was some condensation inside of the logger box. Wiring diagram used was called 20191011_MMW_CR1000X_WiringDiagram_Modified2.pdf and the program uploaded was called 20200820_1208PM_MMW_Program_Final.CR1X, both are in the 20210521_MMW_Visit notes in the idrive. ![]() JT updated the OS which should resolve the issue with the logger dying when temperatures drop below freezing. JD went up to MMW to swap out the CR10X with a newly updated CR1000X. The new program is called 20210929_MMW_Program_Final.CR1X. The battery was kept at the site as it looked like it was still producing good voltage. The old sensors were IDs 56, 143, and 34. The new sensors installed were ID 60, 32, and 30. The gage was extremel clogged and overflowing when we arrived, the data prior will likely need to be nulled. The rain gage was covered using a garbage bag at around 10:45 and will be closed for the season, we will look into opening it back up once the snow thaws next spring. We had a longer PY but the Qu was installed using an extension cable. The PY and Qu should definitely use the longer cable models. ![]() Station off at 10:21 AM EST and on at 1125 EST. JT and NC went out on to MMW to swap out the pyranometer, quantum and temp/rh probe. As of today the station keeps coming in and out based on how much the battery can charge up. We will make a trip out to replace the battery, however the weather in general has been very cloudy and the area is becoming more dense, making it difficult for sun to get through. This revealed that the battery voltage began dropping below 10 V on at 8:00 AM EST. JT noticed that MMW went offline and reviewed the data. NC found that there was water in the battery case and the voltage was extremely low. NC went up to MMW because as of MMW has been offline. JT and NC went up to MMW to replace the battery. Wind gauge was rotating and propellers were turning. Datalogger turned off at 11:44am, turned on at 11:53am. Determined that cold weather in combination with a covered solar panel is probably the cause of the drained battery. We opened the battery box and battery was dry. Solar panel was covered in snow so we wiped this off an 11:25am. 10.5V is 0% and permanently damages the cells in the battery, which is what seems to have been happening over the years.ĪB and NC visited MMW on in an attempt to determine cause of station being offline. Once it drops below 50% it can damage the internal cells of the battery. It may be good to buy a portable charger we could hike up to top the battery off with in the winter before the battery drops below 50% (12.0v). We cut some smaller trees to the SW that were encroaching and shading the panel, but I think if we are going to make a real difference with the shading we are going to need to cut down 5-6 of the large trees that shade the panel substantially. The old battery was dead at 9v and was replaced by a larger 100AH battery. We also bagged the precip gauge for winter. We successfully uploaded the new program and replaced the battery. Need to hike up with a power bank to charge the battery when it drops below 12v during these months.īP and HM went up to replace a dead battery, upload a new program for the CR1000x and trim some tree branches that were shading the panel. The solar panel does not receive any sun during that time. Checked the solar tracker app (sunseeker) and concluded that the sun does not rise above Mansfield from November-January. ![]() Cleared off solar panel and checked batt voltage.
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