In What Range of Moisture Content do Pin-Type Meters Operate?
Resistance-type meters express moisture content as a percentage of the oven-dry weight of the wood. These meters work best from teh range of fiber saturation point (25 to 30 percent) down to around 6 percent. Below 6 percent, it’s tough to make accurate, repeatable readings because of the high electrical resistance in really dry wood. This particulary true at low relative humidity levels, generally below 30 percent. Electrical accuracy of all Delmhorst meters is better than 0.5 percent between 6 and 12 percent moisture content; better than 1 percent between 12 and 20 percent moisture content; and better than 2 percent between 20 and 30 percent, or at fiber saturation point. You can check accuracy either through the internal check or with a Moisture Content Standard.
