Category Archives: Developing a Drip Sensor

The Cave Pearl model “D” is developed, for research in dry caves.

Field Report 2015-12-14: Re-install the Drip Monitoring Network

I brought six new units to cover attrition of the older drip sensors, but with only one failure in the last round, the scheduled replacements left us with several ‘old but still working’ loggers in hand.  With so many good stalagmite-forming records in the bag, we … Continue reading

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Field Report 2015-12-08: The Logging Rain Gauges Work!

We managed to squeeze in a short  fieldwork trip before the end of the year, and the growing number of loggers at Rio Secreto put that cave at the top of our list to give me enough time to service all the units.  It was also important that … Continue reading

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Field Report 2015-08-14: Install New Sensors at RioSecreto

Sensor failures & battery leaks meant that I had to rebuild some of the drip loggers retrieved last week, in addition to loading all the units with the latest code tweaks for sensitivity, buffering, etc.  Because the latest loggers have improved so much, Trish keeps telling … Continue reading

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Field Report 2015-08-06: Retrieve Drip Sensors from RioSecreto

Fieldwork typically starts with retrieving the loggers deployed on the last visit. Over the last year Rio Secreto has grown to become our biggest single installation, so it is usually the first place on our visit list. It helps that they have … Continue reading

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Field Report: 2015-03-17 Drip Logger Service Visit

In March my wife led a Northwestern University earth sciences trip to the Yucatan Peninsula. While she was busy with all the necessary preparations for the students who would be arriving shortly, I slipped away for a couple of hours to retrieve … Continue reading

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Field Report 2014-12-20: Our 2nd Drip Sensor Deployment at Rio Secreto

Now that we had all the flow sensors under water, the last big item on the to-do list was the installation at Rio Secreto. New memory cards brought all the 1st generation units down to a more reasonable 0.33 mA sleep current.  The new builds were even … Continue reading

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Field Report: 2014-12-11 Our First Real-World Drip Sensor Data!

Trish retrieved the first generation of drip sensors from Rio Secreto yesterday, but we did not have time to open them up until this morning. So breakfast consisted of me concatenating the separate csv files, while she brought some substantial spreadsheet whammy to bear analyzing … Continue reading

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