Instruction Manual - Davis Instruments
Contents
1. White Pitch i Queensland Kauri Queensland i European Redwood African Australian 8 18 mc 18 28 mc European gt TI 8 MO220 V1 2 4 10 Utile Walnut African American European New Guinea Queensland Wawa Wandoo MO220 V1 2 4 10 Botanical Names of Wood Aetoxicon Agathis Amblygonocarpus Araucaria Bosquiera Calophyllum Castanea sutiva Chamaecyparis spp 18 28 mo 8 18 mo Dalbergia Dipterocarpus oO gt Dryobanalops 10 oO gt MO220 V1 2 4 10 P Erythrophleum Eucalyptus Eucalyptus Eucalyptus pilularis Gonystylus macrophyllum b ferum proerox Liquidamper styraciflua Maesopsis eminii Mimusops heckelii Nesogordonia ambarensis 11 oo MO220 V1 2 4 10 spp tomentosa 8 18 mc 18 28 mo Picaenia Pinus lampertiana Pseudotsuga EN indicus Pterocarpus soyauxii Quercus delegatensis Quercus spp Sco2. may be added to the measured value Automatic Temperature Correction ATC for use with the Temperature Probe 1 2 Switch the instrument on and select the appropriate wood calibration scale as detailed earlier Using a hammer and nail of a nominal 3 mm diameter make a hole in the wood to be tested Remove the nail and push the Temperature Probe into the hole until the tip is at the required depth Connect the Temperature Probe into the instrument via the Temp socket Measure the wood as described earlier to obtain the automatically temperature corrected ATC moisture value To read the current temperature of the wood press the T button the LCD will display the temperature Press the T button again to change the C F unit of measure Press the gt button to display moisture value again Auto Power OFF The meter can automatically turn itself off after several minutes This is to conserve on battery energy The user can select the period of time the meter must remain idle before turning itself off 1 through 9 minutes The user can also elect to disable the automatic power off feature select 00 1 With the meter ON simultaneously press the power and the right arrow buttons The current time period will appear 2 While continuing to hold the power button use the right arrow button to select the desired time period Select 00 to disable this feature 3 Release both buttons when the desired value is on the LCD
3. 4 11 5 11 0 9 8 7 10 8 10 9 9 7 7 9 8 1 12 1 11 6 8 5 10 10 5 11 7 11 5 10 4 8 6 8 8 12 7 12 2 9 4 11 12 2 12 7 12 6 11 3 9 5 9 7 13 4 13 4 10 5 12 13 3 13 6 13 7 12 1 10 5 10 5 14 0 14 3 11 5 13 14 8 14 5 14 5 12 7 11 2 11 2 14 5 15 1 125 14 16 2 15 3 15 5 13 4 11 8 11 8 15 0 16 0 13 5 15 16 6 16 3 16 7 14 1 12 5 12 6 15 6 17 0 14 4 16 17 2 16 9 17 5 14 8 13 0 13 2 16 0 17 7 14 9 17 18 8 17 7 18 8 15 7 14 3 13 9 16 6 18 5 15 3 18 19 6 18 2 19 7 16 3 15 0 14 5 17 0 19 1 16 1 19 20 2 19 0 21 0 16 9 15 9 15 2 17 6 20 0 16 7 20 20 6 20 0 22 6 17 8 16 9 16 1 18 4 21 3 17 2 21 20 9 20 8 23 5 18 5 17 6 16 8 19 1 22 3 18 3 22 21 5 21 5 24 5 29 3 18 3 17 4 19 7 23 2 19 1 23 22 1 22 9 26 4 20 2 19 8 18 6 21 2 24 5 19 9 24 22 7 23 5 27 4 20 8 20 4 19 0 22 0 25 8 20 5 25 23 2 24 2 27 8 21 2 21 0 19 4 22 7 26 3 23 26 23 6 25 3 29 0 22 4 22 3 20 1 23 9 27 3 27 24 0 26 6 30 0 23 3 23 5 20 8 24 9 28 2 28 24 2 27 9 31 2 24 2 24 6 21 6 25 7 29 2 29 24 4 29 3 32 5 25 6 26 0 22 9 26 9 30 2 30 24 6 30 8 33 7 26 8 27 5 24 1 28 2 31 1 32 25 0 37 25 8 39 26 1 40 27 2 46 5 33 0 14 MO220 V1 2 4 10 Warranty EXTECH INSTRUMENTS CORPORATION warrants this instrument to be free of defects in parts and
4. information visit our website www extech com Extech Instruments Corporation 285 Bear Hill Rd Waltham MA 02451 Copyright O 2007 Extech Instruments Corporation All rights reserved including the right of reproduction in whole or in part in any form 15 MO220 V1 2 4 10
5. 4 MO220 V1 2 4 10 Manual Accuracy Check There are two 2 sets of calibration poles located inside the meter s protective cover One set is for the 18 calibration and the other is for the 26 calibration as marked inside the cover When checking the calibration the A scale should be selected and the temperature probe must be disconnected Touch the two measurement pins to the 18 calibration nodes and view the measurement on the meter display Do the same for the 26 calibration When correctly calibrated the instrument will register H20 values in the range of 17 7 to 18 3 18 calibration and in the range of 25 5 to 26 5 26 calibration If the tolerance exceeds 1 the instrument must be recalibrated Care and Maintenance When the instrument is not in use keep it in its pouch together with its accessories Store the kit in a stable dust free environment out of direct sunlight Remove the batteries from the instrument if it is to be stored for periods of more than one month or when the low battery power symbol appears on the display Check the condition of accessories used with the instrument on a regular basis and replace them if they become worn or damaged Battery replacement When the low battery icon appears on the display replace the battery as soon as practical 1 Remove the rear battery compartment screw 2 Remove the battery compartment door 3 Replace the two 2 AAA 1 5V batteries 4 Replace the com
6. User Guide EXTECH INSTRUMENTS Moisture Meter Model MO220 Introduction Congratulations on your purchase of the Extech MO220 Moisture Meter This instrument is a conductivity moisture meter specifically designed for the wood industry The instrument has eight calibration scales enabling the user to take accurate moisture measurements in 170 wood species Moisture measurements can be taken using the integral pin electrodes or using the heavy duty moisture probe When used with the temperature probe the moisture measurements are automatically corrected with respect to temperature This meter is shipped fully tested and calibrated and with proper use will provide years of reliable service 2 MO220 V1 2 4 10 Specifications Display Measurement principle Range Electrode length Electrode pins Auto Power OFF Power supply Meter housing Operating Temperature Operating Humidity Dual measurement scale LCD with bargraph metering Electrical resistance Wood 6 to 44 0 3 8mm Integrated replaceable After approx 15 minutes Two 2 AAA 1 5V batteries Impact proof plastic 32 to 104 F 0 to 40 C 85 Relative Humidity maximum Dimensions 5 1 x 1 6 x 1 0 130 x 40 x 25mm Weight 3 5 oz 100g Description Meter Description 1 Measurement pins Low battery icon Units of measure 5 2 0 N o 0 PO N Note that the battery compartment is located on the rear of the instrume
7. nt LCD measurement reading Wood group designators External moisture sensor input Remote temperature probe jack Temperature units button Wood group letter selector button 0 Power ON OFF button 3 MO220 V1 2 4 10 Operation CAUTION The electrode measurement pins are extremely sharp Use care when handling this instrument Cover the pins with the protective cap when the instrument is not in use Basic Measurement Instructions 1 5 Remove the cap to expose the needle electrodes OR connect the heavy duty moisture probe socket on the right hand side of this instrument Switch the meter ON by pressing the button Select the appropriate wood calibration scale A B C E F G H or J see the Wood Calibration Tables later in this guide using the P button Push the needle pins or the heavy duty moisture probe pins into the wood and observe the reading Press and hold the power button to shut the meter off Manual Temperature Correction for use without the Temperature Probe T 6 he instrument is calibrated for wood at 68 F 20 C In general wood that is warmer than 8 F 20 C will give higher readings and wood colder than 68 F 20 C will give lower readings An approximate manual correction of 0 5 moisture content per 9 F 5 C may be subtracted from wood that is above 68 F 20 C For wood that is below 68 F 20 C a manual correction of 0 5 moisture content per 9 F 5 C
8. partment door and secure the screw before using the meter 5 MO220 V1 2 4 10 Calibration Tables for Wood Wood Species Group Tables Common names of wood BS 888 amp 589 1973 Brazilian Basswood Beech European European Bitterwood Boxwood African Indian Red Light Cypress E African 8 18 mc 18 28 mc Japanese Grey Bark English E J LF B A J as MO220 V1 2 4 10 Black _ White i American Red Saligna Southern Spotted Zealand Larch European Larch Japanese _ Western E African B West i Indian Pacific Queensland Rock Sugar Meranti dark light Missanda Muninga Musine Red White _ Japanese Tasmanian Turkey mo 7 MO220 V1 2 4 10 Wood Species African American American long leaf pitch Pitch Black Zealand
9. ttellia coriacea Shorea spp no 12 MO220 V1 2 4 10 Wood Type superba plicata Tilia anericana heterophylia amercana mm NOTES The calibration data in this table are based on standard tests by oven drying of commercial samples of the various wood species between 7 and fibre saturation Above the fibre saturation point 25 30 readings are approximate and generally apply to wood that has been dried and re wetted The instrument is calibrated for wood at 68 F 20 C If the temperature of wood varies by more than 5 C the meter reading can be corrected approximately by adding 1 2 for every 9F 5 C below 68 F 20 C or subtracting 1 2 for every 9F 5 C above 68 F 20 C Readings higher by 196 296 may be obtained where wood has been impregnated with a water borne preservative High readings obtained with some ply woods of peculiar composition must be treated with caution 13 MO220 V1 2 4 10 Building material measurements Select the A scale to measure building materials Refer to the following conversion table to obtain the building material moisture value Std Bldg Chip Scale Mat Species Group board A B C E F G TH H20 6 7 4 8 9 2 9 4 8 6 6 8 6 7 11 0 10 1 8 7 0 10 0 10 3 93 7 4 7
10. workmanship for one year from date of shipment a six month limited warranty applies to sensors and cables If it should become necessary to return the instrument for service during or beyond the warranty period contact the Customer Service Department at 781 890 7440 ext 210 for authorization or visit our website www extech com for contact information A Return Authorization RA number must be issued before any product is returned to Extech The sender is responsible for shipping charges freight insurance and proper packaging to prevent damage in transit This warranty does not apply to defects resulting from action of the user such as misuse improper wiring operation outside of specification improper maintenance or repair or unauthorized modification Extech specifically disclaims any implied warranties or merchantability or fitness for a specific purpose and will not be liable for any direct indirect incidental or consequential damages Extech s total liability is limited to repair or replacement of the product The warranty set forth above is inclusive and no other warranty whether written or oral is expressed or implied a Support line 781 890 7440 Technical support Extension 200 E mail support amp extech com Repair amp Returns Extension 210 E mail repair O extech com Product specifications subject to change without notice For the latest version of this User s Guide Software updates and other up to the minute product
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