Pinless Mode
Selectable dual-depth 1/4” and 3/4” is a unique feature only available in Lignomats
dual-depth meters: Ligno-Scanners SD and SDM, Ligno-DuoTec BW and Ligno-
VersaTec. All dual-depth meters from Lignomat have 2 independent sets of calibrations,
one for 1/4” deep and one for 3/4” deep.
Measuring depth is crucial for all pinless meters.
Most pinless meters are calibrated for a fixed
material thickness of 3/4”. That means, accurate
measurements can only be taken if the material
is at least 3/4” thick and no more than 1.5” thick.
If test samples are thicker than 1.5”, core measurements are only possible with a pin
electrode.
If test samples are thinner than the measuring depth, readings may be inaccurate:
- If not enough test material is underneath the measuring pads, values will be too low.
- If material underneath the test sample is included in the measuring field, values
could be too high.
New ways to use the dual-depth capability of the Ligno-VersaTec:
-- Measuring products less than 3/4” thick:
Many panel and floor products are only
5/8” thick, which does not work well for a 3/4” measuring depth. One example:
When floor planks 5/8” thick are installed and measured with a pinless meter set for a
3/4” measuring depth, you cannot be sure that the subfloor or concrete underneath is
not affecting the readings. With the Ligno-VersaTec on the 1/4” depth setting, you
definitely only measure the floor planks .
-- Measuring engineered products:
You can find the moisture content of the thin top
layer made from hardwood by using the corresponding species setting and 1/4” depth.
Using those results, a setting can be found for the entire floor plank. Page 15.
-- Toggle function:
The measuring depth can be changed with up or down keys with
out moving the meter. This allows you to compare surface and core moisture.
Toggling can also be used to diagnose floor failures or to monitor acclimation.
--
1/4” depth setting
allows for checking dryness of waterbased finishes. Works great
for veneer or for measuring moisture close to the surface.
--
Many
building materials
including drywall are less than 3/4” thick. For those
materials the 1/4” depth works better and gives true measurements.
Dual-Depth 1/4” and 3/4”
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