iButtons ready for caving!

We bought five iButton thermochrons (high capacity model, 8k data points) from www.m.nu. Last week I had them programmed (many thanks Hanna and Martin!), so they will start log temperatures every second hour starting from around January 10. The plan is to leave them in Swaziland for about a year, and then have someone collect them and post them back to Sweden. Five iButtons mean that we can place one in the river inlet, one in the cave stream further in the cave, one in the dry cave, one in the “thermal seep”, and one outside near the cave. Hanna also let us use two more, older and possible defunct iButtons; I will place them somewhere in the cave, just in case they do work it can be interesting comparing different parts of the cave.

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