Some online and other technical references that cite specific gravity (SG) values for different wood species list the SG when the wood is a different MC other than 12%. Though this meter maintains the same accuracy level as other Wagner moisture meters, there is less precision displayed since MC is displayed in whole numbers only. See other common name Red Lauan for verified SG for this same botanical name. Wagner is not responsible for any 3rd-party oversights or errors in their (the 3rd-parties) published SG values. The sources for our database include the United States Department of Agriculture, Forest Products Laboratory. As an example, let’s say we have a published SG value of 0.50 referenced to 0% MC with a shrinkage ratio of 0.1% of volume per percent MC. Wagner has compiled species’ average specific gravity (SG) values (wood volume at 12% moisture content (MC) and oven-dry weight) from industry-accepted 3rd-party sources (USDA Forest … *, To obtain the most accurate moisture content measurements with your Wagner moisture meter, you must set the meter for the correct species settings value for the species you are going to measure. See other common name Douglas Fir for verified SG for this same botanical name. See other common name Spanish Cedar for verified SG for this same botanical name. The published specific gravity values are the average for each species. It responds quickly and I feel that it will eventually … See other common name Box for verified SG for this same botanical name. We want to convert to an SG value referenced to 12% MC. See other common name Black Cherry for verified SG for this same botanical name. Density/Specific Gravity Meter. Page 5: L622 Digital Recording Hand-Held Moisture Meter. See other common name Muninga for verified SG for this same botanical name. Interior North includes the remainder of Oregon and Washington and the States of Idaho, Montana, and Wyoming.” Specific Gravity resources: *. Designed for maximum versatility, it comes with built-in adjustments for … See other common name Eastern Hemlock for verified SG for this same botanical name. Ability to measure moisture content of most common woods, exotics, plywood and OSB from 5% to 30% based on Specific Gravity ranging from 0.20 to 1.00 Compact size (4-9/16" L, 23/4" W, 1-1/16" H Light … See other common name Western Hemlock for verified SG for this same botanical name. Other … We want to convert to an SG value referenced to 12% MC. See other common name Northern white cedar for verified SG for this same botanical name. Where an SG value listed in Wagner Meters’ manuals or website has been verified by Wagner, this is indicated as such, and not indicated as verified if a verification process has not been completed by Wagner for that species. See other common name Green Ash for verified SG for this same botanical name. Interior West includes the State of California and all counties in Oregon and Washington east of but adjacent to the Cascade summit. MMC 220 Extended Range - Wagner Electronics This meter is the same as the MMC210 with the exception of the Extended Range Specify Gravity (SG) allowing settings of.20 - 1.0 to accommodate … … Capable of internal species correction once specific gravity is entered. See other common name Macacauba for verified SG for this same botanical name. Lignomat VersaTec Moisture Meter Review . Wagner chose to calibrate its meters at a nominal 12% MC because this is close to where most wood will be in service and will be measured by our meters. **Goncalo Alves (Brazil and Colombian) (Astronium graveolens)(.80) Calculated from Green MC values by Wagner. A coefficient of variation (COV) of about 10% describes the variability inherent in many common domestic (US) species. See other common name Flowering Dogwood for verified SG for this same botanical name. The single button control can be more challenging to use than the dual buttons found on other meters. If a species is not footnoted with a number (1-18), then the specific gravity for that species has not been verified by Wagner. There can and will be some variability of the specific gravity (density) within any species of wood, but the average specific gravity value (again, from the most valid published sources) will provide the best settings for your Wagner moisture meter. According to USDA Forest Service, Forest Product Laboratory, Wood Handbook page 2-8, Soft maple includes silver maple (Acer saccharinum) (.47)*, red maple (A. rubrum) (.54)*, bigleaf maple (A.macrophyllum) (.48)*, and boxelder (A. negundo) (.45)** Specific Gravity resources: Forest Products Laboratory Techsheets Calculated from Dry (0%) MC values by Wagner applying an acceptable volumetric shrinkage approximation per USDA GTR FPL-GTL-76, WoodWorkersSource Wood Library Calculated from Dry (0%) MC values by Wagner applying an acceptable volumetric shrinkage approximation per USDA GTR FPL-GTL-76, WoodWorkersSource Wood Library Calculated from Green MC values by Wagner applying an acceptable volumetric shrinkage approximation per USDA GTR FPL-GTL-76, WoodWorkersSource Wood Library Calculated from Dry (0%) MC values by Wagner, The Wood Database Calculated from Green MC values by Wagner, The Wood Database Calculated from Green MC values by Wagner applying an acceptable volumetric shrinkage approximation per USDA GTR FPL-GTL-76, Tropicaltimber Calculated from Green MC values by Wagner applying an acceptable volumetric shrinkage approximation per USDA GTR FPL-GTL-76. We correct these published values by applying correction factors based on MC at referenced SG values and shrinkage ratio published values. The shrinkage ratio is defined to be the percent of the volume of the wood that shrinks per decrease in MC value. Since online and other references publish SG values at sometimes 0% MC or “green” MC, you will often see different values online than what we publish. The Wagner MMC220 is a digital meter that registers up to about 3/4" beneath the surface. See other common name White Oak for verified SG for this same botanical name. For example, some SG values listed are the values when the wood is dried all the way down to where the MC is actually zero. According to USDA Forest Service, Forest Product Laboratory, Wood Handbook page 2-8, Soft maple includes silver maple (Acer saccharinum) (.47)*, red maple (A. rubrum) (.54)*, bigleaf maple (A.macrophyllum) (.48)*, and boxelder (A. negundo) (.45)** Specific Gravity resources: Forest Products Laboratory Techsheets Calculated from Dry (0%) MC values by Wagner applying an acceptable volumetric shrinkage approximation per USDA GTR FPL-GTL-76, WoodWorkersSource Wood Library Calculated from Dry (0%) MC values by Wagner applying an acceptable volumetric shrinkage approximation per USDA GTR FPL-GTL-76, WoodWorkersSource Wood Library Calculated from Green MC values by Wagner applying an acceptable volumetric shrinkage approximation per USDA GTR FPL-GTL-76, WoodWorkersSource Wood Library Calculated from Dry (0%) MC values by Wagner, The Wood Database Calculated from Green MC values by Wagner, The Wood Database Calculated from Green MC values by Wagner applying an acceptable volumetric shrinkage approximation per USDA GTR FPL-GTL-76, Tropicaltimber Calculated from Green MC values by Wagner applying an acceptable volumetric shrinkage approximation per USDA GTR FPL-GTL-76. *Goncalo Alves (Honduras and Venezuela) (Astronium graveolens)(.89) Calculated from Green MC values by Wagner. See other common name Eastern Pine for verified SG for this same botanical name. See other common name Green Ash for verified SG for this same botanical name. This is a single-mode meter (pinless), which is typical. We correct these published values by applying correction factors based on MC at referenced SG values and shrinkage ratio published values. According to USDA Forest Service, Forest Product Laboratory. See other common name Yellow birch for verified SG for this same botanical name. For our customers' convenience, we have calibrated our meter's species settings in terms of specific gravity.*. The sources for our database include the United States Department of Agriculture, Forest Products Laboratory. See other common name Black ash for verified SG for this same botanical name. See other common name African Padauk for verified SG for this same botanical name. See other common name True Mahogany for verified SG for this same botanical name. According to USDA Forest Service, Forest Product Laboratory. All Rights Reserved. For example, some SG values listed are the values when the wood is dried all the way down to where the MC is actually zero. Where no published average SG value could be found for a species for the wood volume at 12% MC and oven-dry weight basis, Wagner has derived the proper SG value through a robust algorithm (see detailed explanation below under the heading ‘Specific Gravity (SG) Values of Wood and Their Referenced Moisture Content’). So, in this specific case, the 12 % MC referenced SG value will be slightly less than the published value referenced at 0% MC. See other common name Sweetgum for verified SG for this same botanical name. Since online and other references publish SG values at sometimes 0% MC or “green” MC, you will often see different values online than what we publish. So as the volume of the wood sample shrinks, the density (SG) of the wood increases because the formula for the wood density is the weight of the wood sample divided by the volume of the wood sample, or more simply the ratio of the weight of the wood to its volume. The meter’s extended range for specific gravity enables users to take multiple measurements of most softwoods, hardwoods, tropical species, as well as laminated wood products, in just seconds. See other common name Red Maple for verified SG for this same botanical name. For those instances where you need to measure moisture in a wood species that is not shown in your User’s Manual, Wagner has compiled this extensive database of wood species with their associated specific gravity values. See other common name Kasai for verified SG for this same botanical name. Where no published average SG value could be found for a species for the wood volume at 12% MC and oven-dry weight basis, Wagner has derived the proper SG value through a robust algorithm (see detailed explanation below under the heading ‘Specific Gravity (SG) Values of Wood and Their Referenced Moisture Content’).Â,  Specific Gravity (SG) Values of Wood and Their Referenced Moisture Content. Some online and other technical references that cite specific gravity (SG) values for different wood species list the SG when the wood is a different MC other than 12%. The meter computes the average moisture content for the area scanned, corrects for the specific gravity of the species being tested, and shows the result (from 4% to 32% in 0.1 increments) on the digital display. See other common name Longleaf pinefor verified SG for this same botanical name. It is an extended range meter, meaning that it will register up to about 30% moisture content and will read boards that are as heavy as a.70 … See other common name Bald Cypress for verified SG for this same botanical name. In most cases, with unverified species, these species have the same botanical name as the verified version but just a different common name. Wagner has compiled species’ average specific gravity (SG) values (wood volume at 12% moisture content (MC) and oven-dry weight) from industry-accepted 3rd-party sources (USDA Forest Products … A sample at 12 % MC will be 1.2% larger in volume (swells 12 * 0.1%). For our customers' convenience, we have calibrated our meter's species settings in terms of specific gravity.*. So as the volume of the wood sample shrinks, the density (SG) of the wood increases because the formula for the wood density is the weight of the wood sample divided by the volume of the wood sample, or more simply the ratio of the weight of the wood to its volume. See other common name Obeche for verified SG for this same botanical name. Copyright © 2021 Wagner Meters. Many species (botanical name) in the world have many different common names. The footnote descriptions are shown at the bottom of the page. Since 0.50 equals the weight of the sample divided by volume, we now know the volume will actually be 1.2% larger, so the SG should be adjusted by a factor of 1 divided by (1 + 1.2%) or 1 divided by (1.012) = 0.50/1.012 = 0.49). See other common name Pacific Silver Fir for verified SG for this same botanical name. For instance, one might see a 2% shrinkage ratio which means that for every 1% drop in MC the wood will shrink by 2% of its volume. See other common name Parana Pine for verified SG for this same botanical name. 3 Be sure to press down firmly on the center of the meter … See other common name Limba for verified SG for this same botanical name. See other common name Western red cedar for verified SG for this same botanical name. See other common name Eastern Cottonwood for verified SG for this same botanical name. Moisture Content: 5% – 32% Digital Display: In .1% increments Scanning Area: 1 1/2″ x 2 1/2″ Specific Gravity: Selectable wood species setting .30-.70 Calibration: Verifiable with Calibration Block. Wagner Meters’ moisture meters’ species settings are calibrated to wood samples that are at a nominal 12% moisture content (MC). See other common name Narra for verified SG for this same botanical name. Interior North includes the remainder of Oregon and Washington and the States of Idaho, Montana, and Wyoming.” Specific Gravity resources: *. See other common name Common Persimmon for verified SG for this same botanical name. It should be noted that a wood sample will not begin shrinking significantly until the MC drops below fiber saturation point, which is generally between 28% and 32%, so we use 30% as the average fiber saturation point. Wagner chose to calibrate its meters at a nominal 12% MC because this is close to where most wood will be in service and will be measured by our meters. See other common name Brazilian Cherry for verified SG for this same botanical name. This meter won't go above .70 in specific gravity, so with IPE, for instance, set it to .50 and divide the result by 2 since IPE is incredibly dense at 1.0. See other common name Black Walnut for verified SG for this same botanical name. See other common name Northern Red Oak for verified SG for this same botanical name. Wagner moisture meters read IN the wood, not just on the wood. ... Edit: Looking closer at the wood database, it appears that the value for the specific gravity … Therefore we publish SG values for wood species to be used by our meters that correlate to a 12% MC value. Specific Gravity (SG) Values of Wood and Their Referenced Moisture Content. ", "See other common name Black locust for verified SG for this same botanical name. See other common name Red Pine for verified SG for this same botanical name. See other common name Eucalyptus for verified SG for this same botanical name. All Rights Reserved. While pin-type meters are sensitive to a wood’s chemical makeup, pinless wood moisture meters are sensitive to variations in wood’s specific gravity … See other common name Sweet Chestnut for verified SG for this same botanical name. So, in this specific case, the 12 % MC referenced SG value will be slightly less than the published value referenced at 0% MC. To obtain the most accurate readings, the Orion 950 moisture meter can essentially be “zeroed” to compensate for the typical specific gravity (ratio of density compared to water) of the wood species under test. See other common name Scots Pine for verified SG for this same botanical name. See other common name Goncalo Alves for verified SG for this same botanical name. To ensure accuracy, the included calibrator lets you easily calibrate the meter … We included Douglas-fir(Pseudotsuga menziesii) Coast (.48)*, Interior West (.50)*, Interior North (.48)*, Interior South (.46)* to come up with an average SG of (.48)* *“Coast type Douglas-fir is defined as Douglas-fir growing in the States of Oregon and Washington west of the summit of the Cascade Mountains. Wagner has compiled species’ average specific gravity (SG) values (wood volume at 12% moisture content (MC) and oven-dry weight) from industry-accepted 3rd-party sources (USDA Forest Products Laboratory as an example) and provides this list for free with no implied warranty. “We are using the Wagner L622 moisture meters, which allow me to change to different species because we also run some hardwoods, so it’s radiata, it’s ponderosa, Hem-Fir, white fir, Doug-fir, it’s all kinds of species,” Burson added. See other common name Black Willow for verified SG for this same botanical name. See other common name African Mahogany for verified SG for this same botanical name. ... meter’s specific gravity (species) setting is the right one for your species of wood as listed in the Species Setting Tables. If a species is not footnoted with a number (1-18), then the specific gravity for that species has not been verified by Wagner. Buy Wagner Instruments FDK-2 Push/Pull Force Gauge 2 X .020 Lbs Capacity and more from our comprehensive selection of Wagner Force Dials According to Forest Products Laboratory Techsheets Goncalo Alves grown in *Honduras and Venezuela has a higher specific gravity then for **Brazil and Colombia material. See other common name Ipe for verified SG for this same botanical name.
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