Species Correction Table

For pin-type moisture meters that do not have wood species corrections built in, manual correction is required. Delmhorst uses Douglas Fir, the USDA standard, as the basis for all wood calibrations. Because the electrical characteristics of different species vary, all species read differently at the same moisture content.

*Meter readings taken with 26-E 2-pin electrode with insulated pins. Do not apply 2-pin correction.

▲ SPF correction is based on USDA/Forintek data and can be used for the following species: Lodgepole Pine, Alpine Fir, Eastern White Spruce, Black Spruce, Jack Pine

Downloadable Version Here.

METER READINGS
C	F	6	7	10	15	20	25	30	35	40	50	60
-20	0	9	11	15	22	31	38	45	53
-10	20	8	10	14	20	28	34	40	47	55
5	40	7	8	12	18	24	30	36	42	48
15	60	6	7	11	16	21	27	32	38	43	54
30	80	6	7	9	14	19	23	28	33	38	47	55
40	100	5	6	8	12	17	21	25	29	34	42	50
50	120	5	5	7	11	15	19	22	26	30	38	44
60	140	4	5	7	10	14	17	20	23	27	34	40
70	160	4	4	6	9	12	15	18	21	24	30	36
80	180	3	4	5	8	11	13	16	19	22	27	33
95	200	3	4	5	7	10	12	14	17	19	24	28
105	220	2	3	4	6	9	11	13	15	17	21	26
Moisture Content values shown in Bold are only qualitative since they are above fiber saturation point (30%MC).

Downloadable Version Available Here

Measurements obtained with pinless (capacitance type) moisture meters such as TechScan are greatly influenced by the specific gravity of the wood. Wood with higher specific gravity produces higher moisture readings than materials with lower specific gravity at the same moisture content. Since TechScan is calibrated for wood at a specific gravity (SG) of 0.46, a correction is required when measuring wood species with SG values other than 0.46. To correct meter readings to actual moisture content, enter the meter reading and the wood’s specific gravity in the Specific Gravity Correction Tool and the corrected %MC will be calculated in the right column. Refer to the owner’s manual for more information on SG corrections, or, refer to these online resources:

NOTE: SG VALUES ARE BASED ON GREEN VOLUME AND OVEN-DRY WEIGHT.

Specific Gravity Reference

SPECIES NAME:	BOTANICAL NAME:	SG
ALDER	Alnus glutinosa	0.37
ASH, WHITE	Fraxinus americana	0.55
ASPEN	Populus tremula	0.36
BASSWOOD	Tilia glabra	0.32
BEECH, AMERICAN	Fagus grandifolia	0.56
BEECH, EURO	Fagus sylvestris	0.53
BIRCH	Betula alba	0.55
BRAZILIAN CHERRY	Hymenea courbaril	0.64
BUBINGA	Guibourtia spp.	0.71
CEDAR, EASTERN RED	Juniper virginiana	0.44
CEDAR, INCENSE	Libocedrus decurrens	0.35
CEDAR, SPANISH	Cedrela spp.	0.41
CEDAR,WESTERN RED	Thuja plicata	0.31
CHERRY, BLACK	Prunus serotina	0.47
COTTONWOOD, BLACK	Populus strichocarpa	0.31
DOUGLAS FIR	Pseudotsuga menziesii	0.45
EBONY, AFRICAN	Diospyros crassiflora	0.78
ELM, AMERICAN	Ulmus spp.	0.46
FIR, RED	Abies magnifica	0.65
FIR, WHITE	Abies concolor	0.37
GUM, BLACK	Nyssa sylvatica	0.64
GUM, RED/SWEETGUM	Liquidambar styraciflua	0.46
HACKBERY	Celtis occidentalis	0.49
HEMLOCK, EASTERN	Tsuga canadensis	0.36
HEMLOCK, WESTERN	Tsuga heterophylla	0.42
HICKORY, SHAGBARK	Carya ovata	0.64
JATOBA	Hymenea courbaril	0.77
SPRUCE, BLACK	Picea mariana	0.38
SPRUCE, ENGLMN	Picea engelmannii	0.33
SPRUCE, SITKA	Picea sitchensis	0.37
SPRUCE, WHITE	Picea glauca	0.33
TAMARACK	Larix larcina	0.48
TEAK	Tectona grandis	0.55
KERUING	Dipterocarpus spp.	0.69
KOA	Acacia koa	0.53
LARCH, EURO	Larix decidua	0.45
LARCH, WESTERN	Larix occidentalis	0.48
MAGNOLIA, SOUTHERN	Magnolia grandiflora	0.46
MAHOGANY- AFRICAN	Khaya spp	0.42
MAHOGANY- HOND	Swietenia spp	0.45
MAHOGANY-TRUE	Shorea spp.	0.46
MAPLE, HARD	Acer saccharum	0.56
MAPLE, RED (SOFT)	Acer rubrum	0.49
MAPLE, SILVER (SOFT)	Acer saccharinum	0.44
MERANTI	Shorea spp.	0.46
MYRTLE, OREGON	Umbellularia californica	0.51
MYRTLE, TASMANIAN	Nothophagus spp	0.50
OAK, RED	Quercus spp.	0.56
OAK, WHITE	Quercus spp.	0.60
PECAN	Carya illinoinensis	0.60
PINE, JACK	Pinea banksiana	0.40
PINE, LONGLEAF	Pinus palustris	0.54
PINE, PONDEROSA	Pinus ponderosa	0.38
PINE, RADIATA	Pinus radiata	0.42
PINE, SHORTLEAF	Pinus echinata	0.47
PINE, SUGAR	Pinus lambertiana	0.34
PINE, WHITE	Pinus strobus	0.36
POPLAR, YELLOW	Liriodendron tulipifera	0.40
PURPLEHEART	Peltogyne spp.	0.67
RAMIN	Gonystylus spp.	0.52
REDWOOD	Sequoia sempirvirous	0.36
ROSEWOOD, BRAZ	Dalbergia nigra	0.80
RUBBERWOOD	Hevea brazilensis	0.49
TUPELO	Nyssa sylvatica	0.64
VIROLA	Virola spp.	0.42
WALNUT, BLACK	Juglans nigra	0.51

Downloadable Version

METER READINGS WITH INSULATED PINS (26-ES ELECTRODE)
7	8	10	12	14	16	18	20	22	24
CORRECTED READINGS (TRUE INDICATED MOISTURE CONTENT)
7.3	8.4	10.6	12.8	14.9	17.0	19.2	21.4	23.7	26.0

Correction Tables

Wood Species Correction Look-up

METER READINGS

METER READINGS WITH INSULATED PINS (26-ES ELECTRODE)

CORRECTED READINGS (TRUE INDICATED MOISTURE CONTENT)

Specific Gravity Correction Tool

Specific Gravity Reference

SPECIES NAME:

BOTANICAL NAME:

SG

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