Operating Instructions HYDROMETTEBL
Contents
1. 2 0 Operating Instructions ull GANN HYDROMETTEBL COMPACT RH T RH T flex tebe deae hd epe ah ae eq ed dehet eg GANN MESS U REGELTECHNIK GMBH 70839 GERLINGEN SCHILLERSTRASSE 63 INTERNET http www gann de TELEFON 07156 4907 0 TELEFAX 07156 4907 40 EMAIL verkauf gann de ga nternational TELEFON 49 7156 4907 0 TELEFAX 49 7156 4907 48 EMAIL sales gann de Table of Contents 0 1 Publication Statement 4 0 2 General NOIGS aea a orn tiim 5 0 3 WEEE Directive 2002 96 EC Law on Electrical and Electronic Edulprtmelio cuc ecu qu cs 6 1 IVER OCCU ON tT 7 US nS NE On 7 1 2 Device Layout and Button Assignment 8 159 Display 9 2 FUNCIONS Ae 10 21 Switching on the Device Ready 10 2 2 Display in Measuring 11 2 3 Setting M n S esise nennen 12 2 3 1 Measurement Menu Main Menu 12 2 3 2 Measuring Mode Selection Menu Ring Menu 13 2 3 3 Maximum Value Display 16 2 3 4 Minimum Value 172. Intake Figure 4 1 aspiration psychrometer 27 Hydromette BL Compact RH T Application Instructions 4 1 7 Enthalpy Enthalpy En is a measure of the energy content of air water vapour mixtures in kJ per kg 4 2 Measuring the Temperature Handling The device is only suitable for measuring the air temperature and the rel air humidity not for recording the temperature of solid materials and liquids For particularly precise measurements particularly for temperatures under 10 C or above 40 C or for significant differences between the temperature of the sensor or measuring device and the surrounding atmosphere the device should be exposed to the surrounding atmosphere of the measurement location for approx 10 15 minutes or until the temperature has equalised The measuring range of 40 C to 80 C only applies to the sensor tip of the electrode length of the protective filter cap The measuring device may only be exposed to temperatures above 50 C for short periods False measurements can arise from shielding with body parts e g hand as well as blowing or speaking breathing in the direction of the sensor The setting time of the air temperature sensor in moving air is approx 3 minutes for 90 of the temperature difference The air temperature sensor adapts to the surrounding temperature even when stored not switched on 28 Hydromette BL Compact RH T Application Instructions 4 2 1 Dew Point
3. Press measurement button any length of time gt 2 Press measurement button M Release measurement Ni briefly button 1s 22 Hydromette BL Compact RH T Graphical short operating instructions Measured value See diagram gt measuring mode B selection menu e Legends VA Press or down button or down for menu gt A selection Softwareversion V1 03 Route to simple measurement Switch on device main menu is displayed Hold measurement button pressed as long as wanted to carry out a measurement Release measurement button Measured value is held Hold appears in display Hydromette BL Compact RH T Application Instructions 4 Application Instructions On the following pages you will find information on the various measuring modes of the BL Compact RH T Chapters 4 1 4 2 and 4 3 and on the operation of the Hydromette 4 1 Measuring Air Humidity 411 Absolute Humidity The amountof water vapour in g m in the air is termed absolute humidity The amountof water vapour cannot exceed a fixed Specified amount Ts mass of water g Humidity absolute Brn 4 1 2 Moisture Saturation Moisture saturation is the maximum amount of water that can be contained in a certain volume of air The higher temperature the larger the amount of water that can be held in the air m maximum mass of water
4. Sm Display Up button On off button Measurement button Down button 8 Hydromette BL Compact RH T Introduction 1 3 Display Symbols Main menu symbols P gt Air humidity in Measured value is held Hold zr o C D int Dp in C ew point Dp in 4 f Min Max q Cw 1 Lem MEM p rs NN gt pf 14 Hydromette BL Compact RH T Basic functions 2 2298 NN 2 Basic functions 2 1 Switching on the Device Ready Mode The device is switched on by pressing the button 9 After the startphase the main menu appears in the rh measuring mode see also section 2 3 2 Last value measured in 96 Hold symbol Last measured temp C Calculated dew point Dp in C Figure 2 1 main menu measuring mode In this menu a new measurement can be started by pressing the measurement button M See also Chapter 2 2 10 Hydromette BL Compact RH T Basicfunctions p GANN 2 2 Display in Measuring Mode Measured value in 96 Hold symbol signals readiness to make a measurement Measured temperature in C Calculated dew point Dp in C Figure 2 2 measuring mode A measu
5. 2 35 Saved 18 2 4 Other FUNCIONS 19 2 4 1 Automatic Switch off esses 19 2 4 2 Battery Monitoring essere 19 3 SODeCIfICallOllS 20 3 echnlieal D ala 20 3 2 Prohibited Environmental Conditions 20 3 3 Measuring RANGES o Cena deci c 21 Hydromette BL Compact RH T 4 Application Instructions 24 4 1 Measuring Air 24 4 1 1 Absolute Humidity 24 4 1 2 Moisture 24 4 1 3 Relative Air 25 4 1 4 Equilibrium Moisture Content 2 22222222 25 4 1 5 Water Activity 25 4 1 6 Wet bulb 26 4 1 7 28 4 2 Measuring the 28 4 2 1 DEW POM enei 29 4 2 2 Dew Point Dependenton the Air Temperature and the Rel Humidity for Condensation Calculation 30 4 3 Handling the Hydromette 31 4 4 S rpton 32 4 4 1 Building and Insulati
6. 4 and the dew point in C are displayed Measuring mode UGL Equilibrium moisture content The relative humidity in 96 the temperature in C and the equilibrium moisture content in 96 are displayed Measuring mode Ah absolute humidity the relative humidity in and the absolute humidity in g m i e grammes of water in 1 m of air Measuring mode En enthalpy the relative humidity in and the enthalpy are displayed 14 Hydromette BL Compact RH T 444 Hold LU LI Basicfunctions Measuring mode to wet bulb thermometer the temperature in andthe wet bulb temperature in displayed Measuring mode Aw water activity the temperature in andthe water activity non dimensional are displayed Measuring mode Wood the wood moisture in the temperature and the selected wood type are displayed For information on the wood types see Chapter 5 1 Measuring mode Building material the material moisture in weight the temperature in the selected building material are displayed For information on the building material types see Chapter 5 1 Information and explanations on the individual measuring modes can be found in Chapter 4 Application instructions 15 Hydromette BL Compact RH T Basic functions 2 3 3 Maximum Value Display In this menu the maximum air humidity val
7. Hold symbol is displayed again If the new measured value is larger than the previous maximum value Max flashes on the display If the value is notto be saved the M button must be pressed briefly If the value is not to be saved a new measurementis started with a ong press on the M button without changing the previous maximum values 12 Hydromette BL Compact RH T Basicfunctions 2 3 2 Measuring Mode Selection Menu Ring Menu In this menu the various modes for the BL Compact RH T can be set The currently active mode is selected with a short press of the M button The mode then begins to blink Now a mode can be selected with the Up and Down buttons and confirmed with a short press on the M button The BL Compact RH Thas 7 different setting modes which are run through in the following increasing sequence N N Building material 11 25 rh n _ Relative humidit xin Da elative humidity n Wood 32 33 Absolute humidit Hh 32 0 i Water activity cn Enthalpy 0 L Lu D Wet bulb thermometer Figure 2 3 measuring mode selection menu 18 Hydromette BL Compact RH T Basic functions The selected mode changes the displayofthe measurement menu Depending on the mode the appropriate physical dimension is displayed 1 Measuring rh relative humidity x the relative humidity in the temperature in C Hold 1323 r 1
8. The dew point is the temperature atwhich the air is saturated with water vapour Condensation occurs below this temperature The dew point generallylies below the air tem perature except with 100 r h where both temperatures are the same The dew point is dependenton the airtemperature and water vapour partial pressure and equal to the temperature whose saturation pressure is equal to the water vapour partial pressure present The water vapour partial pressure is calculated as follows rel humidity x sat water vapour press Wat ater vapore pressure 100 Further information can be found in the Internet 29 Hydromette BL Compact RH T 4 2 2 Point Dependent on the Air Temperature and the Rel Humidity for Condensation Calculation Air temperature Dew point in C at a relative humidity of Moisture saturation amount of water in g m Application Instructions 4 3 Handling the Hydromette The Hydromette BL Compact RH T is mainly used for measuring the relative air humidity in bulk goods and solid materials e g masonry concrete etc To do so hold the Hydromette at the measuring location in the air or insert into the building material commence the measurement For particularly precise measurements particularly for temperatures under interior temperatures 20 25 C or for significant differences between the temperature of the sensor or measuring device and the surrounding atmosphere the devi
9. a part is grounds for a new guarantee or an extension of the original guarantee Batteries and other wearing parts such as cables or filter material are excluded from the guarantee When claiming under the guarantee the device must be sent post free to Gann Mess Regeltechnik GmbH or the supplier with details of the claim and accompanied by proof of purchase The guarantee is void if repairs or other manipulations have been carried out by the owner or a third party Gann Mess u Regeltechnik GmbH accepts no liability for damage or defective functions caused by improper or incorrect handling or storage of the device Gann Mess u Regeltechnik GmbH will on no account accept liability for damage lost profits lost usage or other consequential damage that arise from the use of the product or the inability to use it Subject to technical changes GANN MESS LI REGELTECHNIK GMBH GANN 70839 GERLINGEN SCHILLERSTRASSE 63 TELEFON 07156 4907 0 70826 GERLINGEN POSTFACH 100165 TELEFAX 07156 4907 48 INTERNET http www gann de E MAIL sales gann de
10. Berlin ISBN 3 540 08280 8 Wassertransport durch Diffusion Feststoffen H Klopfer Bauverlag GmbH Wiesbaden ISBN 3 7625 0383 4 Schadensanalysen H Fischer expert Verlag ISBN 3 8169 0928 0 Schall W rme Feuchte G sele Sch le Bauverlag GmbH ISBN 3 7625 2732 6 5 3 General Concluding Remarks The notes and tables in these operating instructions on permitted 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 of the measuring device for the correctness of this information The conclusions to be drawn from the measurement results are related to the individual conditions and the knowledge from professional experience for each user cases of doubt for example concerning the permitted moisture content in coating or screed substrates when laying floor coverings itis recommended to contact the manufacturer of the coating or floor covering and to take account of the recommendations of trade organisations 42 Hydromette BL Compact RH T m Appendix GANN CAN Guarantee conditions Gann Mess Regeltechnik GmbH shall rectify material or manufacturing defects at no cost by repair or replacement of the defective parts at its choice that occur within six months of purchase or one year of dispatch from the factory whichever period ends first Neither the replacement nor the repair of
11. ce should be exposed to the surrounding atmosphere of the measurement location for approx 10 15 minutes or until the temperature has equalised The sensor adapts to the surrounding temperature even when not switched on Condensation occurs on all parts in a room that are cooler than the dew point No adjustment of the sensor is necessary Response time of the air humidity sensor The response time is delayed by the filter material in the metal tube The response time of the air humidity sensor in slightly moving air is approx 5 minutes for 90 96 of the humidity difference with a surrounding temperature of 20 to 25 C and approx 15 minutes for 95 of the humidity difference By moving the device ventilating the sensor the response time can be reduced in stationary air or with very little air movement Hydromette BL Compact RH T 31 Application Instructions 4 4 Sorption Isotherms Sorption isotherms describe the equilibrium state of the sorption of a material on a surface at a constant temperature In this equilibrium state the relationship between water content and equilibrium moisture contentof the surface i e of the material can be described and represented bya curve Each moisture value can be allocated to an appropriate water content of the material using this curve Different materials also have different sorption behaviour depending on the specific properties of the material As these processes are extremely com
12. d Menu In this menu the last 5 measured values are saved The view and the respective units depend on the measuring mode selected The memory location number r1 is displayed for approx 1 second and then the last measured saved value contained there is displayed You can recognize saved values as there is no Hold symbol in the display Figure 2 8 memory location r1 As soon as you select the saved menu the memory location number r1 is displayed for approx 1 second and then the last measured saved value contained there is displayed The last5 measured values are automatically saved and stored in memory locations r1 to r5 The last measured value is in memory location r1 This is a ring memory As soon as the sixth measured value is recorded the first first measured measured value is automatically removed from the memory With a shortpress of the M button the next memory location r2 is selected and the value contained there is displayed After reaching 5th memory location the first is shown again The menu can be exited with the up and down buttons 18 Hydromette BL Compact RH T Basicfunctions 2 4 Other Functions 2 4 1 Automatic Switch off If no button is pressed within approx 40 seconds the device switches itself off automatically The current values are retained and are displayed again after itis switched back on 2 4 2 Battery Monitoring If the battery symbol appears in the
13. d moisture content On reaching the equilibrium moisture content the wood no longer loses moisture ifthe surrounding conditions remain the same and also does nottake up any moisture Hydromette BL Compact RH T 39 Below some equilibrium moisture content values that are reached with wood the conditions given Equilibrium wood moisture content Air temperature 10 C 15 C 20 C Wood moisture content Relative air humidity 20 4 70 4 70 4 60 4 40 4 30 30 6 30 6 20 6 10 6 00 5 90 40 7 90 7 80 7 70 7 50 7 50 50 9 40 9 30 9 20 9 00 9 00 60 11 10 11 00 10 80 10 60 10 50 70 13 30 13 20 13 00 12 80 12 60 80 16 20 16 30 16 00 15 80 15 60 90 21 20 21 20 20 60 20 30 20 10 amm Appendix GANN 5 5 1 Material table Material identifier Description Code 11 Cement screed 12 Anhydrite screed 13 Concrete 14 Cement mortar 17 Gypsum plaster 19 Lime sand brick 20 Lime cement mortar Insulation wood fibre insulating 22 board 23 Mineral wool insulation 25 Brick 32 Hardwood beech 33 ooftwood pine Hydromette BL Compact RH T 41 Appendix 5 2 References We would like to specifically draw your attention to the fact that the literature mentioned is only an extract and is not complete The individual titles must also be viewed with regard to the respective usage case Trocknungstechnik Erster Band Springer Verlag
14. display the battery is dead and must be renewed A list of battery types that can be used can be found in the Technical data chapter 19 Hydromette BL Compact RH T Specifications 2 2298 CN 3 Specifications 3 1 Technical Data Display 3 line display Display resolution 0 1 96 Response time 2s Storage conditions 5 to 40 C 10 to 60 C short term Operating conditions 0 to 50 C 10 to 60 C short term Power supply 9 V block battery Approved types tyoe 6LR61 or type 6F22 Dimensions 180 x 50 x 30 Lx Wx H mm Weight approx 320 g 3 2 Prohibited Environmental Conditions Condensation air humidity continuously too high 85 and damp Permanentpresence of dustand combustible gases fumes and solutions E Environmental temperatures continuously too high 450 C e Environmental temperatures continuously too low lt 0 20 Hydromette BL Compact RH T Specifications 3 9 Measuring Ranges Measuring ranges Air Humidity 0 to 100 6 RH 10 to 90 r H 2 RH Temperature 20 to 80 0 to 50 C 0 3 C 21 Hydromette BL Compact RH T Graphical short operating instructions Main menu Cr AV Measuring mode selection VA Max value reset menu Min value reset menu On Off button Device deactivates itself after 40 inactivity Hold measurement button pressed longer than 2 seconds
15. ed 8 3 8 7 13 0 Xylolite in accordance w ith DIN 13 5 14 5 Gas concrete Hebel 11 0 12 0 Hastizell screed 1 1 8 2 2 Anhydrite screed 0 6 0 7 Concrete 200 kg cement m3 sand 1 4 1 6 1 7 3 0 Concrete 350 cement m3 sand 1 8 2 0 3 4 Concrete 500 kg cement m3 sand 2 0 2 2 Hydromette BL Compact RH T 37 Application Instructions Comparison Graphic of Air Humidity Material Moisture 4 4 1 3 9JhnjSIOUJ 2 9Jhn SIOUJ WOO JEWJON eDuei ainisioW episino pna yoene snDunJ 95 Jojse d uinsd c 60 5 0 95 Jo1se d gg B 2 G ie 001 06 08 04 09 09 OV 06 0 OL 0 Hydromette BL Compact RH T 38 Application Instructions Notes on graphic in section 4 4 1 3 The areas shown in the graphic mean Ambient climate r F 10 90 100 Material condition Light area dry Equilibrium moisture content reached Shaded area adjustment area Caution Coatings or adhesives withoutdiffusion properties should not yet be processed Contact the respective manufacturer Dark area damp Handling and processing at very high risk 4 4 2 Wood Equilibrium wood moisture content equilibrium moisture content If woodis stored in a particular climate for a long period it takes up the moisture matching this climate which is termed equilibrium moisture content or equilibrium woo
16. ent Household Humidity The equilibrium values generally mentioned refer to a temperature of 20 C and 65 relative humidity These values are often referred to as household humidity or as air dry However these should not be confused with the values at which the material can be handled and processed Flooring and coatings mustbe viewed and evaluated in conjunction with the respective permeability of the material used For example when laying a PVC covering the later average equilibrium moisture content is taken as the basis Please note here the recommendations provided by trade associations and covering manufacturers When evaluating wall surfaces the respective long term environmental conditions mustalso be considered The lime mortar plaster in an old vaulted cellar can easily have a moisture content of 2 6 percent by weight whereas the gypsum plaster in a centrally heated room would have to be considered as too damp with a moisture content of 1 percent by weight When evaluating the moisture in building material the surrounding climate is the primary consideration All materials are subject to continuously changing temperatures and air humidity The influence of the material moisture depends significantly on the heat conductibility the thermal capacity the resistance to water vapour diffusion and the hygroscopic properties of the material The expected moisture content of a material is the moisture level that corresponds
17. g Humidity saturation volume of air 24 Hydromette BL Compact RH T Application Instructions 4 1 3 Relative Air Humidity The relative air humidityis the relationship between the actual water vapour content absolute humidity and the moisture saturation The relative humidityis heavily dependenton the temperature humidity absolute x 100 96 Humidity relative humidity saturation 4 1 4 Equilibrium Moisture Content The device is able to displayrelative humidity air temperature and the equilibrium moisture content of wood simultaneously This makes it easier for parquetrecliners and interior designers to evaluate whether timber components can be exposed to the existing climate or whether damage such as cracking shrinkage or swelling is to be feared The equilibrium moisture contentis the moisture contentthatwood will finally reach when it is exposed to a constantclimate i e constanthumidity and constanttem perature long enough 4 1 5 Water Activity AW Water activity is defined as the relative humidity that has to prevail in the surrounding medium to prevent an exchange of water between air and material In practice it corresponds roughly to the equilibrium moisture content of a material but is not given as a percentage value but as a value between 0 and 1 aw The water activity is a measure ofthe degree of freedom of the free water of various types bound in a material 25 Hydr
18. ions or by not taking proper care during transport storage or operation of the device even if this requirement for care is not specifically addressed in the operating instructions 0 3 WEEE Directive 2002 96 EC Law on Electrical and Electronic Equipment Disposal of packaging the battery and the device must be undertaken in accordance with the legal requirements ata recycling centre The device was manufactured after November 7 2014 6 Hydromette BL Compact RH T Introduction 1 Introduction 1 1 Description The Hydromette BL Compact RH T is a precise thermo hygrometer for quick measurement of relative air humidity and air temperature Using programmed sorption isotherms the weight and mass percentages can be determined for various building and insulation materials as well as hardwoods and softwoods Due to the thin sensor tube 5 5 mm diameter itis eminently suited to moisture analyses damage evaluation dehumidifying buildings and checking the readiness of floor and wall coatings Additional features include single handed operation integrated measurement probe and a 3 line LCD screen for the simultaneous display of air humidity air temperature and dew point The Hydromette BL Compact RH T flex T model has a flexible sensor tube 6 5 mm diameter swan neck and is therefore excellent for measurements of points that are difficult to access Hydromette BL Compact RH T Introduction 1 2 Device Layout and Button Assignment
19. itions specified These conditions can be found in Chapter 3 1 Technical data This measuring device may likewise only be used under the conditions and for the purposes it was designed for Operational reliability and functionality are no longer ensured if the device is modified or adapted Gann Mess u Regeltechnik GmbH is not liable for any damage arising from such modifications or adaptations The risk is borne by the user alone e notes andtables in these instructions on permitted 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 correctness of this information The conclusions to be drawn from the measurement results are related to the individual conditions and the knowledge drawn from professional experience for each user The measuring device maybe operated in residential and commercial areas as the stricter class B for emitted interference EMC has been adhered to e The device may not be operated in the immediate area of medical equipment heart pacemakers etc e The measuring device may only be properly used as described in these instructions Hydromette BL Compact RH T Introduction e Keep the device and accessories out ofthe reach of children Gann Mess u Regeltechnik GmbH accepts no liability for damage resulting from non adherence to the operating instruct
20. omette BL Compact RH T Application Instructions The aw value is an important measure concerning the shelf life of foodstuffs and influences the incidence of microorganisms that have differing requirements for freely available water With a lack of free water growth processes are slowed or prevented whereas others are accelerated Therefore the aw value is an important measure in the chemical and food industries 4 1 6 Wet bulb Temperature The wet bulb temperature is the lowest temperature that can be achieved with evaporative cooling The release of water from the damp surface is in balance with the ability of the surrounding atmosphere to absorb water and thus saturates the surrounding air with water vapour Because of the evaporative chill the wet bulb temperature is dependent on the relative air humidity and lies under the air temperature The temperature difference is the larger the drierthe surrounding airis Using the temperature difference the relative humidity can thus be determined The wet bulb temperature in the drawing 2 is determined with a psychrometric measurement with a thermometer provided with a damp material cover The wet bulb temperature is mainlyofinterestwhere large amounts of liquids evaporate such as in wood drying machinery 26 Hydromette BL Compact RH T Application Instructions Fan Dry temperature __ Moist temperature Temperature difference Airstream Damp material
21. on Materials 35 4 4 2 vasa tnnc idees ie dU e 39 5 qo 41 5 1 Material 41 9 2 42 5 3 General Concluding Remarks eese 42 Graphical short operating instructions in the centre p 22 23 Hydromette BL Compact RH T Introduction 0 1 Publication Statement This publication replaces all previous versions It may not be reproduced in any form or processed duplicated or disseminated using electronic systems without the written permission of Gann Mess u Hegeltechnik GmbH Subject to technical and documentary changes Al rights reserved This document was prepared with the required care Gann Mess Regeltechnik GmbH accepts no liability for errors or omissions GANN Mess Regeltechnik GmbH Gerlingen Germany 07 11 2014 4 Hydromette BL Compact RH T Introduction 0 2 General Notes This measuring device fulfils the requirements of the applicable European and national directives 2004 108 EC and standards EN61010 Appropriate declarations and documentation are held by the manufacturer To ensure trouble free operation of the measuring device and operational reliability the user mustcarefully read the operating instructions The measuring device may only be operated under the climatic cond
22. plex the sorption curves obtained empirically i e they relate to practical data and experience For each material its own characteristic curve must be obtained experimentally Measuring the relative air humidity water activity in building materials This method is mainly used for measurements at depth in old building structures where measurements using the resistance measuring method sandstone quarry stone damp walls with blooming etc do not provide reproducible results For this the Blue Line Compact RH T devices with tube lengths of 160 and 350 mm are available For measurements over a long period at multiple points or at different depths drilled holes should be secured and closed The method for measuring the relative air humidity equilibrium moisture contentin screeds has been used for a long time in Great Britain and the Scandinavian countries Compared to the non destructive measurement or the resistance measurement it is however more time consuming and requires suitable drilled holes However it provides very reliable results when an equilibrium moisture content is sought This method also increases the 32 Hydromette BL Compact RH T Application Instructions reliability where there is insufficientinformation on the composition ofthe screed Handling For the measurement a hole with a diameter of 7 mm or 8 mm flex mm and a depth of at least40 mm is drilled The drilling depth depends on the required meas
23. rement is started by pressing the M button During the measurement process the symbol blinks and the values adapt to the surrounding conditions After releasing the M button the Jo symbol is displayed steadily and the Hold symbol also appears The device is now in Ready mode Press the M button again to start a new measurement Approx 40 seconds after releasing the measurement button the device switches itself off automatically to save battery power If the device is switched on again the last value measured is shown on the display 11 Hydromette BL Compact RH T Basic functions 2 3 Setting Menus If the up or down buttons are pressed in Heady mode the various setting menus are shown in sequence 1 Measurement menu Heady mode The measuring process can be carried out here 2 Measuring mode selection Here you can specify the measuring mode section 2 3 2 3 Maximum value display The largest value measured is shown here section 2 3 3 4 Minimum value display The smallestvalue measuredis shown here section 2 3 4 5 Saved menu The last 5 values measured can be called here section 2 3 5 2 3 1 Measurement Menu Main Menu The last measurement with the note Hold is shown here In this menu a new measurement can be started by pressing the M button During the measuring process the Hold symbol disappears from the display After releasing the M button the measured value is saved The
24. to the average of the equilibrium moisture content under changing climatic conditions that itis continuously exposed to The air humidity values in living areas in central Europe in the summer are approx 45 65 rel humidity and in winter approx Hydromette BL Compact RH T 35 Application Instructions 30 45 rel humidity Increased damage occurs in centrally heated rooms in winter as a result of these variations It is not possible to lay down generally applicable values Much more it always requires the technical and expert experience to correctly evaluate the measured values With organic building materials the water content is generally given in percent by weight as the hygroscopic water content of the respective material is to a large extent proportional to the density i e for all densities ofa building material when giving the moisture content in percent by weight the same value is displayed In percentby volume with double the density the display will be twice as high For materials not included in the BL Compact RH T there are currently no sorption isotherms confirmed or checked by us 36 Hydromette BL Compact RH T Application Instructions 4 4 1 2 Equilibrium Moisture Values in Percent by Weight Building materials at 20 at 20 at 20 approx 50 approx 65 approx 90 9o RH RH RH Cement screed sealed Cement screed unsealed ement mortar ypsum screeo 0 8 0 9 1 3 Magnesite scre
25. ue measured in a measurement sequence is displayed This function is only available in the rh measuring mode If a maxmum value is to be deleted the displayed value must be selected with a short press on the M button The value blinks and can now be deleted with a long press ofthe M button Figure 2 4 maximum value 1 Afterwards only the Max symbol and the 96 symbol are still blinking With a further short press of the M button the entry is confirmed and the device returns to the Ready mode With the M button a new measurement can then be carried out immediately Figure 2 5 deleted max value Hydromette BL Compact RH T Basicfunctions 2 3 4 Minimum Value Display In this menu the minimum air humidity value measured in a measurement sequence is displayed This function is only available in the rh measuring mode Figure 2 6 minimum value menu Figure 2 7 deleted min value If a minimum value is to be deleted the displayed value mustbe selected with a short press on the M button The value blinks and can now be deleted with a long press ofthe M button Afterwards only the Min symbol and the 96 symbol are still blinking With a further short press of the M button the entry is confirmed and the device returns to the Ready mode With the M button a new measurement can then be carried out immediately 17 Hydromette BL Compact RH T Basic functions 2 3 5 Save
26. urement depth or screed thickness Before making the measurement the hole it should be carefully cleaned of drilling dustand blown out There must be no free water in the hole To prevent an exchange of air in the hole it should be sealed The equilibrium moisture content in the hole is indicated after approx 30 minutes given temperature equilibrium same temperature in material being measured and the sensor tube Sensor Damage to the sensor The sensor can be made irreparable by various mechanical and environmental influences These include in particular direct contact of the sensor with the fingers direct contact with solid or sticky materials or objects measurementin atmospheres holding solutions oil vapours or other high levels of contaminants Measurementerrors Measurements under 20 96 r h and above 80 96 r h should notbe carried out over a long period where possible continuous measurements Other false measurements can arise from Hydromette BL Compact RH T 33 Application Instructions shielding with bodyparts e g hand as well as blowing or speaking breathing in the direction of the sensor Warning The sensoris notdesigned for continuous measurements at above 80 96 r h longerthan approx 36 hours at once without regeneration at 30 40 96 r h in the same period 34 Hydromette BL Compact RH T Application Instructions 4 4 1 Building and Insulation Materials 4 4 1 1 Equilibrium Moisture Cont
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