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Application Notes

30

Hydromette BL A plus

5.1.5

Growth ranges of fungi

Dry rot 18 - 22 °C, 20 - 28% wood moisture

Wet rot 22 - 26 °C, > 55% wood moisture

White rot 25 - 28 °C, 40 - 50% wood moisture

Spruce gill polypore 35 - 45% wood moisture

Scaly lentinus 40 - 60% wood moisture

Blue stain fungi > 25% wood moisture

5.1.6

Swelling and shrinkage of the wood

Wood  shrinks  if  it  transfers  moisture  to  the  surrounding  air  below
the fibre saturation level. On the other hand, wood swells if it takes
up  moisture  from  the  surrounding  air  below  the  fibre  saturation
level.  This  is  a  very  complex  process.  If  you  are  interested,  we
recommend  finding  the  relevant  information  on  the  World  Wide
Web.

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Содержание Hydromette BL A plus

Страница 1: ...1 Hydromette BL A plus HYDROMETTE BL A plus Operating Instructions Version 1 0 EN...

Страница 2: ...ment 9 1 3 Display symbols for the resistance based measurement 10 1 4 Display symbols for the capacitive measurement 10 2 Basic Functions 11 2 1 Switch on device 11 2 2 Display in measuring mode 11 3...

Страница 3: ...hnical data 22 4 2 Prohibited Environmental Conditions 22 4 3 Measuring ranges of the resistance measurement 23 4 4 Measuring ranges of the capacitive measurement 23 4 5 Transport Storage Conditions 2...

Страница 4: ...ood moisture measurement 29 5 1 4 Wood equilibrium moisture content 29 5 1 5 Growth ranges of fungi 30 5 1 6 Swelling and shrinkage of the wood 30 6 Wood types table for the capacitive measurement 31...

Страница 5: ...d documentation are held by the manufacturer To ensure trouble free operation of the measuring device and operational reliability the user must carefully read the operating instructions The measuring...

Страница 6: ...ted or normal humidity conditions in practice and the general definitions of terms have been taken from the specialist literature No responsibility can therefore be taken by the manufacturer for the c...

Страница 7: ...requirements at a recycling centre The device was manufactured after 01 10 2009 0 4 Safety advice WARNING There is a risk of injury from the measuring pins of the electrodes for resistance based mois...

Страница 8: ...hipboard and veneers For the resistance based measurement the electrical resistance of the wood between two electrodes is measured and thus the moisture in sawn timber chipboard veneers and wood fibre...

Страница 9: ...uction 9 Hydromette BL A plus 1 2 Device layout and button assignment LED for alarm signal Electrode connector Capacitive sensor rear side OLED display Up button On off button Measurement button Down...

Страница 10: ...nce based measurement 1 4 Display symbols for the capacitive measurement Wood type classification number 91 93 Battery symbol Wood moisture in Compensation temperature in C Wood type classification nu...

Страница 11: ...s open during the last operation or the measuring mode is displayed In the measuring mode the last measured value in the last operation is displayed 2 2 Display in measuring mode Figure 2 1 Display of...

Страница 12: ...dated After releasing the measurement button the Hold symbol is displayed again and the last measured values remain unchanged The device is now in Standby mode Press the measurement button again to st...

Страница 13: ...e Down button to navigate through the menu A menu item is selected by pressing the measurement button The three dots at the top and bottom of the screen indicate that further selection items are avail...

Страница 14: ...asurement with a standard smooth material surface The material selection is performed in the submenu Wood Type Adjuster using the table in chapter 6 Wood types table for the capacitive measurement If...

Страница 15: ...volves a seven stage wood type correction the selection of which is made via a wood type table with over 300 different wood types The optimum electrodes for the respective measuring task can be connec...

Страница 16: ...material thicknesses The menu can be reached as follows Main menu Settings Type 3 1 4 Temperature Compensation resistance based measurement This menu is only available if a resistance based measureme...

Страница 17: ...0 1 steps materials can be found in the Wood types table for the capacitive measurement chapter 6 The menu can be reached as follows Main menu Settings Wood Type Adjuster 3 1 6 Languages Setting The...

Страница 18: ...ally for each type in the Alarm menu The type is selected using the Up and Down buttons The selection is confirmed by pressing the measurement button Any upper limit value within the selected measurin...

Страница 19: ...display The minimum and maximum measured wood moisture values of a measurement series are displayed in this menu The minimum value and maximum value can be deleted using the Delete menu item Main men...

Страница 20: ...ing the determined setting of the wood type adjuster further measurements can be carried out non destructively for the same wood type It should be noted for this mode that moisture close to the surfac...

Страница 21: ...tes the device switches off automatically The current values are retained and are displayed again after the device is switched on again 3 4 2 Battery Monitoring If the battery symbol appears in the di...

Страница 22: ...60 C short term 85 RH non condensing Power supply 9V block battery Approved types type 6LR61 and 6F22 Dimensions 185 x 50 x 30 L x W x H mm Weight approx 200 g 4 2 Prohibited Environmental Conditions...

Страница 23: ...endent 4 5 Transport Storage Conditions The Hydromette BL A plus may only be stored in the packaging that is provided by us or available from us as accessory We shall not accept any liability or warra...

Страница 24: ...r resistance measurement the Hydromette BL A plus works according to the method of electrical resistance or conductivity measurement which has been known for years This process is based on the fact th...

Страница 25: ...c When removing light lever movements can be used at right angles to the grain to loosen the needles To determine the core moisture content the electrode tips must reach to between 1 4 and 1 3 of the...

Страница 26: ...s When measuring stacks of veneer to expose the measuring point ensure that the veneer is lifted and not pulled over the remaining stack avoid friction electrostatic charge Wood particles adhering to...

Страница 27: ...gon nuts should be tightened with a spanner or pliers before beginning a series of measurements Loose electrode tips break easily Attention Do not completely drive in the electrode tips There should b...

Страница 28: ...t be selected in the menu In the second case there must be air or e g Styrodur underneath the measuring point The measurement is based on the principle of the capacitive electric field The active meas...

Страница 29: ...21 at the top right in the first line A difference of 0 5 is permitted 5 1 4 Wood equilibrium moisture content If wood is stored in a particular climate for a long period it takes up the moisture matc...

Страница 30: ...tinus 40 60 wood moisture Blue stain fungi 25 wood moisture 5 1 6 Swelling and shrinkage of the wood Wood shrinks if it transfers moisture to the surrounding air below the fibre saturation level On th...

Страница 31: ...Wood types table for the capacitive measurement 31 Hydromette BL A plus 6 Wood types table for the capacitive measurement...

Страница 32: ...etration depth 23 mm long order no 4620 with 17 mm penetration depth Ram electrode M 18 order no 3500 For depth measurements in thick wood up to 180 mm thick available for this Electrode tips without...

Страница 33: ...surement Wood moisture test adapter order no 6070 Test adapter for wood moisture for check of wood moisture measuring instruments with accessories Surface measuring caps M 20 OF 15 order no 4315 For m...

Страница 34: ...anty or an extension of the original warranty period Batteries or other wear parts such as cables or filter fabric are excluded from the warranty When making any warranty claim the device must be sent...

Страница 35: ...Appendix 35 Hydromette BL A plus...

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