USER MANUAL
Contents
1. Instruments PCE Americas Inc PCE Instruments UK Ltd 711 Commerce Way Units 12 13 Suite 8 Southpoint Business Park Jupiter Ensign way FL 33458 Hampshire Southampton USA United Kingdom SO31 4RF From outside UK 44 Tel 0 2380 98703 0 Fax 0 2380 98703 9 info pce instruments com From outside US 1 Tel 561 320 9162 Fax 561 320 9176 info pce americas com www pce instruments com english www pce instruments com USER MANUAL Moisture Meter PCE WP21 Contents AON CAN Or hahaa hana E ena ata Technical data banana BN BNN BNN NUN RENA DN NAN Description OF the CO Senen p t Dei D Re P DM Preparing IDE InSIFUTTIeEITS asia ena 0332 aa MER RARE RARE take RARE RARE RARE naan saan QA RR RARE rien san DA OR GRE E BETA M as reMe MS cT Hea e er a Met e e MU I M N Density of selected wood TV DOS ban ae a e Br 9 N DOD 5 AKA WD Calc l ting Wo0d density cR nan en Nana Ne Test Errors 10 Changing the battery sss ele RR ea alas 1 Application Wood Moisture Meter WIP 22D is designed for quick and non damaging measurement of moisture contents in wood The device measures the dielectric constant SIC of the material The wood is penetrated by the electromagnetic field generated by the device The Moisture Meter is equipped with knobs for setting the density and thickness of the wood It can be used to measure wood planks 10 mm to 60 mm thick and of density within the range of 0 3 to 1 1 g cm The measuring2. Mountain Cherry 0 54 Chestnut Sweet 0 55 Douglas Fir Oregon 0 47 Eberesche 0 73 Ebony Macassar 1 Elm 0 64 European Cherry 0 55 Spruce European 0 43 Hickory White heart 0 76 Hornbeam common 0 79 Iroko 0 63 Larch European 0 55 Larch japanese 0 49 Lauan White 0 52 Locust black 0 74 Mahogany Broad 0 55 Mahogany Grand Bassam 0 47 Mansonia 0 6 Maple 0 59 Maple 0 58 Maple sugar 0 63 Maple soft 0 47 Meranti dark red 0 67 Meranti White 0 82 Merbau 0 77 Niangon Wishma 0 6 Oak European 0 65 Oak White 0 74 Okoume Gaboon 0 41 Pear 0 7 Pine insignis 0 4 Pine Weymouth 0 37 Pine Europ Black 0 53 Pine Redwood 0 49 Popular Black Populus nigra 0 41 Ramin 0 56 Rubberwood 0 49 Redoak Northern 0 66 Sapele 0 62 Silver Fir 0 41 SpruceW H Alaska pine 0 44 Teak 0 63 Utile 0 59 Walnut 0 64 8 Calculating wood density Calculating the density of a wood type can be necessary when the wood type is not in the table in chapter 7 or when it is suspected that the local wood has the density considerably different from the average for this type Follow these steps to calculate the density of the wood type a cut a regular cube of the wood and measure it s size with the accuracy of 1 mm e g 46 64 32 mm calculate it s volume in cm V a b h e g 94 2 cm b weight the cube with the accuracy of 1 gram note the result G in grams
3. range is 4 to 60 of moisture contents 2 Technical data Range 4 60 Max depth of penetration 60 mm Display LCD 12 7 mm Resolution 0 1 Settings range density 0 3 1 1 g cm thickness 10 60 mm Minimal settings step density 0 02 g cm thickness 2mm Power battery 6F22 9V Battery life approx 5000 meas Low power indication yes Size device 165 80 33 mm case 270 180 55 mm 3 Description of the controls There are two control knobs on the front panel upper to select the operating function OFF power off DENSITY setting the density with the lower knob THICKNESS setting the thickness with the lower knob SETTINGS CHECK alternately displaying the previously set density and thickness MEASURE automatic calibration approx 4 sec and measurement lower to set the density and thickness of the wood This knob is active when the upper knob is set to DENSITY or THICKNESS 4 Preparing the instrument a Preparing the instrument without the change in settings In this case quickly switch the upper control to SETTINGS CHECK The LCD will display the density and thickness set during the previous measurements e g 0 56 and 42 Hold the device in the air fig 1 switch the upper control knob to MEASURE The device will calibrate automatically the display shows The end of calibration is indicated by the number 4 0 the lower range limit displayed on the LCD The device is ready for mea
4. best if the timber is supported only by its ends or placed on a layer of Styrofoam several centimetres thick The instrument is equipped with an automatic power off which activates 5 minutes after the last change in upper control knob setting It can be switched off instantly by setting the upper control knob to OFF 6 Remarks The size of the timber should not be less than 80 x 40 mm Measuring moisture contents of smaller pieces leads to results lower than the real moisture contents The electrodes are made of special silicon bronze and during normal operation should not get deformed If due to excess force or accidental fall the electrodes get deformed they should be bend to their original shape Deformed or misplaced electrodes are the source of errors and in extreme cases can prevent proper calibration of the device Avoid measurements when the timber or the operator of the device are loaded with high electrostatic charges Such charges sparks make measurements difficult and can damage the instrument 7 Density of selected wood types Wood type brand name acme Abacji 0 35 Abura 0 53 Afara white 0 52 Afrormosia 0 65 Alder Blackalder 0 51 Alerce 0 34 Ash common 0 65 Ash japanese 0 61 Ash white 0 64 Aspen Poplar 0 45 Balsa 0 08 Basswood Lime 0 49 Beech 0 68 Birch common 0 61 Californian Redwood 0 39
5. e g 62g C measure the approximate moisture contents with Wood Moisture Meter WIP 22D setting thickness according to h density based on your expertise or tables Note the result W e g 17 2 d calculate the density with the following formula G 100 g x V 100 W where G weight of the sample g V volume of the sample cm W moisture contents 96 g density g cm For the example values given in a b and c the result is 62 100 g x 0 56 94 2 100 17 2 e now you can use the calculated density e g 0 56 for any future measurements of this type of timber 9 Errors If the instrument can not calibrate properly it indicates the following error Alr generator voltage too low Alr generator voltage too high In such case power off the device check the geometry of the electrodes clean the electrodes make sure the device is dry and then start the calibration again see chapter 4 If the instrument still reports error contact the producer 10 Changing the battery The device is equipped with a power level control circuit When the power drops below acceptable level a sign LO BAT appears on the left side of the LCD This indicates that the battery has expired and should be replaced with a new one To replace the battery unscrew the screw on the back of the instrument and carefully remove the back panel Store the device in a dry place NOTE Thi
6. s instrument doesn t have ATEX protection so it should not be used in potentially explosive atmospheres powder flammable gases
7. surements Fig 1 b Preparing the instrument and changing the settings Follow these steps set the upper control knob to DENSITY and then set the required density using the lower control knob set the upper control knob to THICKNESS and set the required thickness with the lower control knob set the upper control knob to SETTINGS CHECK The LCD will display the density and thickness alternately hold the instrument in the air fig 1 and set the upper control knob to MEASURE The device will calibrate automatically the display shows The end of calibration is indicated by the number 4 0 the lower range limit displayed on the LCD The device is ready for measurements A table with the density values for the most popular wood types is on the back of the moisture meter Density values for other also exotic wood types are in chapter 7 of the users manual 5 Measurements The measurements should be conducted in at least several places These places should be as flat smooth and clean as possible The actual result of the measurements is the arithmetic average of all the measurements A line drawn between the electrodes should be perpendicular to the fibres If the timber is too thin place the electrodes parallel to the fibres Hold the device as shown on fig 2 Press the electrodes hard against the wood Read the result There should not be any metal elements wet wood or concrete etc under the timber Its
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