A. Introduction. This is a wood moisture tester of DC resist- ance(probe type), with 4 gears wood and 3 gears construction material selection.
Wood Moisture Meter WT660 - Shenzhen Wintact Electronics Co., Ltd.
MODEL: WT660 Wood moisture tester Instruction manual M SET A. Introduction This is a wood moisture tester of DC resistance(probe type), with 4 gears wood and 3 gears construction material selection functions, which can be widely applied in the fields of testing the moisture content in the woods,bamboo ware,paper articles and traditional Chinese medicinal material, these of wood fibre construction. B. Function 1.4 gears wood and 3 gears construction material selection 2. Data lock 3. Low battery indication 4. Automatic/manual shutdown 5. Backlight display C. Name of parts 1. Built-in cap 2. Built-in fork 3. LCD 4. Gear selection 5. Power/Data lock button 6. Temperature unit/Backlight button Moisture Meter Version: WT660-EN-00 -1- 2 3 4 M SET 6 1 5 Moisture Meter -2- D. LCD 1. Moisture content reading 5 2. Temperature 1 reading 3. Data lock icon 4. Gear 2 4 5. Low battery icon 3 E. Comparison table of material grade Wood Wood grade Wood Rhodes west teak 1 African whitewood Ormosia hosiei 1 Rose wood Brazil walnut tree Walnut tree Apitong 1 Elm tree 2 Gmelina chinensis benth 2 Hemlock White poplar 2 Dipterocarpus Teak 2 Oak Banya pine 3 Chinese red pine Douglas fir / D-fir 3 Coquito Lauan 3 Abies holophylla maxim Manchurian ash 3 Larch European silver 3 Apitong Maple 3 Birch White ash 3 Basswood Construction material 5 Cement mortar 6 Lime mortar 7 Brick grade 3 3 3 3 3 3 3 4 4 4 4 4 4 4 -3- F. Operation 1. Power on/off Install the battery, short press the " " button to turn on, it will be powered off automatically if there is no further operation on the key within 10 minutes.Long press the " " button for 2 seconds to turn off. 2. Gear selection After power on, short press the " M " button to switch the gear. Refer to the "Comparison table of material grade"to select the gear, if the specie to be measured is not in the comparison table, Gear 2 is usually recommended to be used for measurement, but the measurement error caused by this is needed to be paid attention to. When measuring, the two probes should be inserted into the test object at the same time. 3. Data Lock After power on, short press the " " button to lock the Moisture content reading, and the LCD displays [ ] at the same time, and then short press the " " button again to cancel the lock function . 4. Temperature unit setting After power on, long press the " SET " button to switch between °C/°F. 5. Backlight After power on, short press the " SET " button to turn on/off the backlight. -4- G. Determining the Gear If the moisture of the measured woods is not given, please select the level as follow: Firstly measure the even moisture woods sample with the 4 gears respectively and record the readings.Then put the sample into the oven to measure the moisture, then compare the results with the above said 4 readings and fix the level for future measurement which is closest to the output measured with oven.If you can not measure in a way said above, it is recommended to measure at gear 2, but the error may arise must be considered. H. Methods for measuring the moisture content in woods Methods for measuring the moisture content in woods are drying-up method, electrical method, carbonization method, titration method and humidity method.In production, drying-up method and electrical method are generally adopted. With dry-up method, the woods weight difference between the original sample weight and dry-up weight after taking out from the oven will be calculated and be referred to as the moisture content index. This method features high precision but time-taking, just applicable to the laboratory practice. Electrical method adopts the working principal of woods electrical performance concerning with the moisture content in woods, can be widely applied in mass production. I. Notice 1. This unit calibrate itself automatically after powering on,and the probe can not touch any subject while powering on. 2. The probe is very sharp, do not point it to the people or leave it to children as their toy. 3. Avoid the corrosive liquid contact with the unit and the probe from any possible damage. -5- 4. Do not let the probe contact the object with electricity to avoid damage arisen from that. 5. When the " " appears, that indicates the low battery which may effect the precision of the unit. Please replace the battery immediately. 6. Take out the battery if the unit is expected not in operation for a long time. J. Technical parameters grade 1 2 Wood 3 4 5 Construction material 6 7 Range 7.2%~40% 8.7%~50% 10.6%~60% 12.2%~70% 0.7%~7.9% 0.5%~8.5% 0%~15.2% Resolution 0.10% Precision ±2% gear 1 Operating temperature 0~40 Operating humidity 20%RH~90%RH Automatic power off time About 10 minute Length of probe 9.8mm Battery 2*1.5V AAA Battery Size 93.5*43*24.4mm Weight 44.8g Specific Declarations a. Our company shall not be liable for any derivative results of the product. b. We reserve the right to make changes to the product design and the content of the instruction manual without notice. c. Old battery dealing must be complied with the local law and regulations. -6-Corel PDF Engine Version 14.0.0.701 CorelDRAW