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Calibration
Everything here is public, so an answer written once helps everyone who hits the same problem.
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Why wait an hour before setting the wet point
Straight after watering, the soil right by the probe can be waterlogged while the rest of the bed is still catching up. Waiting about ...
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When should I calibrate a new monitor
Soon after setting it up, once the probe is in the bed where it will live. You want to calibrate in the actual soil ...
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What counts as the wet point
The wet point is your soil soon after a thorough watering, once the water has soaked in and drained rather than sitting in a ...
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Do I lose calibration if the power goes off
No. Calibration is stored on the monitor itself and survives power cuts, reboots and being unplugged. It even survives a factory reset and a ...
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Should I recalibrate between seasons
You can if you want to be precise, since soil structure changes through the year, but for most people one good calibration holds fine. ...
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Do capacitive and resistive probes calibrate the same way
Yes, the two step dry and wet process is identical. The monitor does not care which type of probe you use, it just learns ...
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After calibrating, readings seem too low
Often the dry point was set when the soil still had some moisture, so the scale is squashed. Let the bed dry to where ...
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After calibrating, readings seem too high
The usual cause is setting the wet point while the soil by the probe was waterlogged. Water, wait a full hour so it drains, ...
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Does probe depth affect calibration
Yes, so keep the probe at the same depth for both calibration points and for normal use. If you push it deeper or pull ...
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Does it matter whether I set dry or wet first
No, the order does not matter, the monitor just needs both points. In practice dry first is convenient, because you set dry, then water, ...
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The page says not calibrated yet, what does that mean
It means the monitor is showing a rough guess based on default values rather than your soil. It still reads, but the percentage is ...
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Do I calibrate each monitor separately
Yes. Each monitor sits in its own soil with its own probe, so each one is calibrated where it lives. Calibration is per monitor, ...
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I moved the monitor to another bed, do I recalibrate
Yes. Different soil means a different scale, so recalibrate in the new bed to keep readings accurate. It is the same two step process ...
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How often should I recalibrate the probe
For a settled bed, not often at all, once done it holds. Recalibrate if you move the monitor to different soil, if you change ...
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What counts as the dry point
The dry point is your soil when the plant would genuinely want watering, not bone dry powder. If you can, set it when the ...
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Should I calibrate differently for pots and containers
The method is the same, but calibrate in the actual pot, because compost in a container dries and wets differently from garden soil. Set ...
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Does calibration handle clay or sandy soil
That is exactly what calibration is for. Clay holds water and reads differently from free draining sandy soil, and calibrating anchors the scale to ...
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I replaced the probe, do I recalibrate
Yes. A new probe reads slightly differently, so set the dry and wet points again with the new probe in place. This is quick ...
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Can I skip calibration and just use it
You can, and it will show a rough reading, but you lose the main thing that makes PlantSense trustworthy. Calibration takes a couple of ...
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I repotted the plant, do I recalibrate
Yes, fresh compost behaves differently from what was there before, so recalibrate after repotting. Settle the plant in, water it, and do the two ...
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