Rob Morley wrote:
On 17 Mar 2019 15:28:44 GMT
Tim+ wrote:

Can you estimate this with an ordinary multimeter? If so, what sort of
figures would indicate a moisture level below 20%?

"Proper" moisture meters are just guessing, sometimes wildly.
Take a representative bit of your firewood, weigh it accurately and
stick it in an oven on low heat for a few days then weigh it again
(after it has cooled). The difference is how much moisture it's lost (it
probably won't be completely dry, but it will be mostly, probably).

You could try measuring resistance before and after drying to give
some indication, but it probably won't be very repeatable - apart from
anything else you're only measuring the surface, unless you want to
chop it into 10mm cubes and measure the whole lot in each three
directions ...

There are probably tables to be found somehere that tell one the
relationship between density of wood and its moisture content. It
would be different for different species of course.

--
Chris Green
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