|Forum topic by ondablade||posted 08-24-2009 08:12 PM||761 views||1 time favorited||1 reply|
08-24-2009 08:12 PM
Just to share the results of some digging i’ve been doing as i need to buy one….
As best i can tell from researching the topic on the web it’s one of those deals where you pays your money and takes your pick.
Woodweb www.woodweb.com was recommended to me as the best source on the why’s and wherefores of meters. Here’s two excellent articles on the technicalities: http://www.woodweb.com/knowledge_base/MeasuringMonitoring_Moisture_Levels.html http://www.woodweb.com/knowledge_base/Wood_and_Water.html
At the most basic level it looks like the big advantages of non contact meters are that they allow large areas to be quickly scammed, and don’t spike the wood as do the pin type.
Both types by most makers seem to be capable of giving accurate readings. Both likewise can be thrown by specific conditions. (lots on Woodweb about this – water, temperature, fungal infection, mineral inclusions, species and so on – it seems to pay to develop an understanding of the technicalities, and not to blindly rely on the meter) Choices seem to me to be more to do with precise application requirements, reliability, stability of calibration, robustness of build, and especially expandability with additional stuff like hammer in electrodes and of course price and so on.
It seems that if you are really serious and have the need (e.g. are drying and making) that eventually it might pay to have one of both meter types.
One big factor is the moisture range measured – if you are only concerned about verifying kiln drying and acclimitisation then up to say 20% is probably fine, but if you see the possibility of getting involved in drying then up to 60% is really needed – which seems to drive the cost up.
Linomat, Delmhorst and Wagner seem to be respected brands. Electrophysics too, although the build looks a bit basic. GE do a nice unit under the brand of Protimeter Timbermaster here in Ireland/UK, but it doesn’t seem to have much profile in the US.
Subject to a final review of specs and/or more information i think i’m probably going for the Lignomat MiniLigno DX/C (which reads to about 60%), or the Protimeter Timbermaster. Both are pin types, and offer add on kit….
-- Late awakener....