Ligno-Scanner SDM

The dual-depth Ligno-Scanner SDM clearly outperforms most non-invasive moisture meters. The meter has 2 sets of calibrations for measuring 1/4″ and  3/4″ deep. Dual-depth function is available for domestic and tropical wood species, engineered products, drywall, concrete and other building materials. Specific calibrations have been added for different types of Bamboo.

Dual-depth – a new approach to scanning :

  • Measures different board thicknesses: over 3/4″ and less than 3/4″.
  • Floor testing with 1/4″ depth assures, that only the floor planks are measured and not the concrete or subfloor underneath.
  • Measuring the top layer of engineered panels and floor planks accurately with the corresponding hardwood species correction.
  • Compares surface / core moisture to check if boards are dried evenly.
  • Checks surface moisture after water damage or after applying waterborne finishes.

The SDM pinless meter is the first choice for:
Flooring contractors, installers and inspectors, manufacturing, restoration and maintenance. You can always count on accuracy, reliability and consistency – every time – every day.

Item Number: SDM


Product Description

Ligno-Scanner SDM – non-invasive Moisture Meter

Lignomat’s unique non-invasive measuring technology assures calibration accuracy, reliability and dual-depth measuring capability, measuring depth 1/4″ and 3/4″. Includes specialized calibrations for wood, bamboo, sheetrock and even reference scales for laminates and concrete.

The Ligno-Scanner SDM moisture meter provides precise moisture percentages, but the meter can also be used for quick-scanning areas for high and low moisture levels.

Corrections are built-in for

  • domestic and tropical wood species
  • OSB, sub floors, engineered floors
  • bamboo*
  • gypsum (sheetrock wall board).
  • reference scales tailored to the products to be measured: wood composites, laminated panels, vinyl, textile, lightweight building materials and heavy building materials such as concrete (ASTM F2659), tile, stone, etc.

* For the flooring industry: Lignomat developed a set of special calibrations different from calibrations for wood to fit bamboo (horizontal, vertical, strand and engineered).

Another pinless advantage: non-invasive moisture meters from Lignomat measure lower moisture contents than pin moisture meters. A great advantage for the flooring industry in areas with low relative humidity and high-desert climate zones.

The Ligno-Scanner SDM indicates true wood moisture percentages corrected for different wood species. Wood species and corresponding settings are listed on a laminated species card included with each moisture meter. Wood species corrections can also be custom-programmed by entering the specific gravity between 0.3 and 1.0.

Reference Scales: for concrete (ASTM F2659) and other building materials. Reference scales are used in restoration and the building industry to quickly detect different moisture levels. Before performing in-situ probe testing in concrete, pinless measurements can find areas of high moisture levels where in-situ probes should be set. However, it is not the proper method to determine if a concrete slab is dry enough for resilient floor coverings to be installed. For more information go to the NWFA Installation Guidelines. For use of pinless meters see ASTM F2659.

Calibration Stability: The Ligno-Scanner SDM moisture meter has proven to be a trustworthy meter, which produces the same accurate moisture percentages today, tomorrow and in a year due to internal calibration checks. The calibration is checked before each measurement and if necessary, automatically adjusted. These “background checks” before measurements assure calibration consistency for every reading for Lignomat’s pinless moisture meters. Manual re-calibration by the customer is not necessary. Lignomat offers an external calibration check block TS to confirm the accuracy of the moisture meter.

Operation: Pinless moisture meters from Lignomat are easy to use.  The large display indicates wood species settings, measuring depth and moisture percentages with a resolution of 0.1%. Push buttons are clearly marked. A HOLD function is available for measuring in places where the display cannot be seen or when taking photos of the display. All Lignomat moisture meters are covered by a two-year warranty.

When selecting the right Ligno-Scanner for your application consider measuring depth and materials you want to measure.

Measuring Depth:  The measuring depth is crucial for all pinless moisture meters. Most pinless moisture meters are calibrated for a product thickness of 3/4″, which allows measuring products between 3/4″ and 1.5″ thick (if both sides are accessible for measurements). That presents a problem for thinner products. With the dual-depth Ligno-Scanner SDM you can measure all products from veneer up to 1.5″ thick.

If you would measure products thinner than 3/4″ with a measuring depth of 3/4″, the indicated value is wrong. For products thinner than 3/4″, which are laying on a solid surface (concrete, sub floor, work table), measurements could be too high, because the solid surface is included in the measurements. If thinner products are measured with an air space underneath, measurements will be too low, because not enough material is underneath the measuring plates. The 1/4″ depth gives accurate measurements for products 5/8″ or less . Even veneer can be measured.

The meter is sensitive to surface moisture and for that reason it is ideal to check waterborne finishes between coatings or to check dryness of surfaces after industrial cleaning.

Many materials other than wood products can be checked to determine different moisture levels. When measuring wood, the Ligno-Scanner SDM gives accurate moisture readings in percent corrected for different wood species.

Click to check your options:

Calibrated for wood
Ligno-Scanner D     single depth 3/4″
Ligno-Scanner S     single depth 1/4″
Ligno-Scanner SD  dual-depth 1/4″ and 3/4″
Calibrated for wood, bamboo, drywall with 3 ref scales for concrete, laminates, building materials
Ligno-Scanner SDM   dual-depth 1/4″ and 3/4″
Ligno-DuoTec BW       dual-depth 1/4″ and 3/4″  +RH
Ligno-VersaTec           dual-depth 1/4″ and 3/4″  +RH  +Pin

For more information please contact Customer Service at 1-800-227-2105.

Lignomat USA Ltd, 14345 NE Morris Crt., Portland OR 97230, USA,


Included Ligno-Scanner SDM, a carry pouch with belt loop, one 9 V battery, manual and laminated wood species card.
5-60% dependent upon species setting*…
Lower than 5% hardwoods, higher than 5% for softwoods.
Display 0.1% resolution for the entire range.
Measuring Depth Dual depth measuring capabilities at 1/4″ and 3/4″.
71 wood species settings, or specific gravity of the wood between 0.3 and 1.0 (setting 30-100). Bamboo settings for horizontal, vertical and strand.
Drywall Gypsum  0-2% (based on the oven dry method)
Reference Scale 0-99 for non-wood building materials. Reference scale with different sensitivity levels from soft to hard building materials.
Stable calibration not affected by ambient temperature. The calibration is internally checked by the meter before every reading and if needed automatically adjusted. No manual adjustment necessary.
Calibration Check External calibration check block #TS is available to verify the calibration and functions of the meter.
Size Pocket-size 2″ x 5.5″ x 0.5″, measuring pad 1 5/8″ x 2 5/8″.
Weight 8 ounces (200 g), made out of high-impact plastic
Warranty All moisture meters have a 2 year warranty. Battery excluded.