Category Archives: Developing a Temp.Chain

My efforts to create an underwater temperature sensor string using one-wire DS18B20s

Field Report 2016-03-27: Progress on the DS18B20 Temp. Strings

Happy to report the successful deployment of three more temperature strings:   and I think it’s fair to say the first two protoypes have almost run their course: Logger/Sensors Time/Max.Depth Comment #45  (19 x 25cm) [1st build] 201503-08 (14m) Full data from Temp chain, Qsil … Continue reading

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DS18B20 Calibration: Finally nailed it!

The high residuals I was seeing up at 40°C, and the dubious waterproofing on those cheap DS18b20‘s convinced me that I needed a dry well for the calibrations. Since lead has a thermal conductivity 100x better than water, my first though … Continue reading

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Triaging Cheap DS18B20 Temperature Sensors

As I dive into another batch of cheap DS18B20’s for a new set of temperature strings, I thought I should post a note about the pre-filtering I do with these guys before investing effort to properly calibrate and epoxy them. After attaching … Continue reading

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Field Report 2015-12-15: New DS18B20 Sensor Chains Installed

The August deployment produced both success and failure from our 1st-generation temperature strings. We still managed to get both of those older units back on their feet with fresh batteries, and we add two beta units to the set.  I really had to scramble to get … Continue reading

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Field Report 2015-08-12: Success with DS18B20 Temperature Strings!

We were already happy with the flow & drip sensor data from this trip because, despite the TMP102 problems, most of the units had performed brilliantly.  But for me, the real prize of the season was going to come from the underwater temperature strings … Continue reading

Posted in Developing a Temp.Chain, Expedition Reports & Updates | 6 Comments

Calibrating DS18B20 one-wire sensors with Ice & Steam point measurement

I’m probably not the first person to note that sensor calibration is one of the big differences between the mountains of data coming from the citizen science movement and that produced by research professionals. (…mea culpa…) After opening this can of worms, … Continue reading

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Using multiple DS18B20’s as a DIY thermistor string: The Build

Temperature is a fundamental physical parameter which can be used to track how water moves and interacts with the rest of the environment. Most waterways in the world are multi use, and temperature sensors are a simple way to monitor rivers and streams, to see how they are being … Continue reading

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