Zur Oberflächen- und Tiefenmessung inSperrholz, Furnieren, Mittellagen, Holz-Faserplatten,Brettern, Bohlen, Kanthölzern,Parkettfriesen, Holzspänen, Sägemehl usw.vorzugsweise mit den ElektrodenNr. 203 a, b, c, d, So, 208, 209, 210, 213Messbereich: 5-28% Holzfeuchte567 89 1012 1416 18 20 22 24%Feuchtigkeit HumedadMoisture UmiditáHumidità28For surface and depth measurement inplywood, veneers, core layers, fibreboards,panels, planks, squared timber,parquet friezes, wood chip, sawdust etc.For use with electrodesNo. 203 a, b, c, d, So, 208, 209, 210, 213Measuring range:5-28% wood moisture contentZur Messung über dem Fasersättigungspunkt,speziell für waldfrische Hölzer undzur Trocknungsauswahl, vorzugsweise mitden Elektroden Nr. 203 a, So(Elektroden quer zur Faserrichtungeinschlagen)Messbereich: 30-120% Holzfeuchte30405060 7080 90 100 110%Feuchtigkeit HumedadMoisture UmiditáHumidità120For measuring above the fibre saturationpoint, especially for newly harvestedtimbers and selecting drying type, useelectrode No. 203 a, So(Insert electrodes across the grain)Measuring range:30-120% wood moisture contentZur Messung vor und nach der Trocknung,sowie zur Kontrolle bei der Weiterverarbeitung,vorzugsweise mit denElektrodenNr. 203 a, b, c, d, So, 208, 209, 210, 213Messbereich 6-60% Holzfeuchte6 8 10 12 14 16 18 20 22 2426 28%Feuchtigkeit HumedadMoisture UmiditáHumidità30 32 34 40 45 50 60For measuring before and after dryingand for monitoring moisture duringprocessing, use electrodesNo. 203 a, b, c, d, So, 208, 209, 210, 213Measuring range:6-60% wood moisture contentZur Messung von Baustoffen wie Gips, Holzzement-und Gipsestrich, Zement- undKalkmörtel, Gasbeton, Steinholz, Parkett,Dielenbretter, Türen- und Fensterrahmenusw., vorzugsweise mit den ElektrodenNr. 203 b, d, 208, 214, 219, 226Messbereich: 5-24% HolzfeuchteUniversal-Skala 100teilig,Skala trocken – grün, normal – weiß,feucht – rot678 910 11 121314 15 16%Feuchtigkeit HumedadMoisture UmiditáHumidità17 18 2022For measuring building materials including:plaster, wood cement and gypsum, cementand lime mortar, aerated concrete,xylolith, parquet, floorboards, doors andwindow frames etc. use electrodesNo. 203 b, d, 208, 214, 219, 226Measuring range:5-24% wood moisture contentUniversal scale 100-pieceScale key: dry – green, normal – white,moist – red4
Consistent control of timber moisturecontent is an essential task for all companiesworking in the timber industry. Thisis particularly the case for manufacturers,but is also important for purchasing,commercial trade and storage. Moisturecontrol is a prerequisite for ensuring ahigh-quality end product.In addition to highly favourable characteristics,timber is also known for one lesspositive quality: it is very hygroscopic. Asa result, timber is constantly striving toachieve a balance between its own moisturecontent and relative humidity. Timberis consequently subject to a consistentlyfluctuating moisture level. The impact of afluctuating moisture level is as follows:as relative humidity rises, timber moisturecontent increases and as relative humidityfalls, timber moisture content decreases.In the case of timber storage or airconditioningafter the drying stage untilfurther processing, these processesshould also be monitored with moisturecontrols to ensure that the desired timbermoisture level remains within thenecessary limits. It is therefore advantageousto conduct an additional review ofthe viability of the storage area. Continuousmonitoring via moisture controls cansimultaneously help identify which areasof a storage room or air-conditionedroom are unsuitable due to draught, oxidationor damp flooring.When selecting timbers for processing,moisture checks are essential to beabsolutely certain that only timbers witha moisture content suitable for the enduse are actually used.When bonding wood, for instance intimber construction, or when gluing orveneering plywood and chipboard, it isextremely important to maintain correctmoisture content in order to achievemaximum adhesion between the gluedparts.After processing, timber should alreadyhave the moisture content for theintended use, namely the level iteventually will take on when used, asdetermined by the ambient humidity.has resulted in the following guidingvalues for timber moisture level:Bonded sheets, plywood and laminatesapprox. 5-7%Room doors and all timbers within closedliving areas with central heatingapprox. 6-9%Room doors and all timbers within closedliving areas with stove heatingapprox. 10-12%Window frames, house doors, constructiontimbers and all timbers which comeinto contact with outside air on one sideapprox. 12 – 15%All timbers used outdoors, for instancefor use on railway carriages, travel cases,heavy goods vehicles etc. as well as thoseused for wooden flooring in air-conditionedrooms – approx. 13-16%Construction timbers – approx. 15 – 20%All timber grades and monitoring conditionsare stated in the DIN standards:4074, 18334, 18355, 18356, 18367, 52351,52360-62, 68360, 68365, 68701, 68705,68763.If moisture readings are not taken,products which have been handcraftedflawlessly quickly become damaged aftercompletion. In this case, undesirable andexpensive customer complaints arealmost unavoidable.In order to take successful and efficientreadings, the use of an electric moisturegauge is recommended.Electronic measuring devices arespecially developed for taking timbermoisture level readings. These deviceshave measuring scales matched to theintended use of the product and areavailable in different types.It is advisable to begin moisture monitoringbefore artificially drying the wood.Timbers which have significantly divergedin terms of moisture content can be separatedduring this test. Drying equipmentcan then be loaded with timbers of a similarstarting moisture level. Consequently,all timbers can be dried evenly.This advice also applies to veneer andparticular dryers, as efficient utilisationcan only be achieved when all timbersuniformly reach the required endmoisture level for further processing,without being over dried.In addition, the timber drying cycle canbe more precisely monitored with theuse of timber moisture readings. Moisturegradient readings can be used to immediatelyidentify the start of the settingprocess.When moisture monitoring does nottake place, the use of excessive cautionfrequently results in timber being sodried out that it is too dry for furtherprocessing. As a result of over drying,the timber again becomes weaker.5