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4.2.2

Dew 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/m³

°C

30%

40%

50%

60%

70%

80%

90%

°C

°C

°C

°C

°C

°C

°C

30

10.5

14.9

18.5

21.2

24.2

26.4

28.5

30.4

30.4

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Содержание HYDROMETTE BL

Страница 1: ...1 Hydromette BL Compact RH T Operating Instructions Version 2 0 EN HYDROMETTE BL COMPACT RH T RH T flex ...

Страница 2: ... Basic Functions 10 2 1 Switching on the Device Ready Mode 10 2 2 Display in Measuring Mode 11 2 3 Setting Menus 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 Display 17 2 3 5 Saved Menu 18 2 4 Other Functions 19 2 4 1 Automatic Switch off 19 2 4 2 Battery Monitoring 19 3 Specifications 20 3 1 Technical Da...

Страница 3: ...bulb Temperature 26 4 1 7 Enthalpy 28 4 2 Measuring the Temperature 28 4 2 1 Dew Point 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 Sorption Isotherms 32 4 4 1 Building and Insulation Materials 35 4 4 2 Wood 39 5 Appendix 41 5 1 Material Table 41 5 2 References 42 5 3 General Concluding Remarks 42 Graphic...

Страница 4: ...d duplicated or disseminated using electronic systems without the written permission of Gann Mess u Regeltechnik GmbH Subject to technical and documentary changes All rights reserved This document was prepared with the required care Gann Mess u Regeltechnik GmbH accepts no liability for errors or omissions GANN Mess u Regeltechnik GmbH Gerlingen Germany 07 11 2014 ...

Страница 5: ... 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 The notes and tables 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 manu...

Страница 6: ... 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 manufact...

Страница 7: ...and softwoods Due to the thin sensor tube 5 5 mm diameter it is 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 Comp...

Страница 8: ...Introduction 8 Hydromette BL Compact RH T 1 2 Device Layout and Button Assignment Sensor Display Up button Measurement button On off button Down button ...

Страница 9: ...ct RH T 1 3 Display Symbols Main menu symbols Other symbols Temperature in C Dew point Dp in C Air humidity in Air humidity in Min Max display Dead battery Temperature in C Memory location 1 Measured value is held ready for measurement ...

Страница 10: ...ns 2 1 Switching on the Device ReadyMode The device is switched on by pressing the on button After the startphase the main menu appears in the rh measuring mode see also section 2 3 2 Last value mease 8 s TJ 3 58 272 67 Tm1 0 0 1 20 Lare ue55 t9 29Tfn Tft1 7855t ...

Страница 11: ... the symbol blinks and the values adapt to the surrounding conditions After releasing the M button the 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 o...

Страница 12: ...enu 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 Hold symbol is displayed again If the new me...

Страница 13: ...f 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 CompactRH Thas 7 different setting modes which are run through in the following increasing sequence Figure 2 3 measuring mode selection menu Building material 11 25 Relative humidity EMC Absolute humidity Enthalpy Wet bulb thermometer Water ac...

Страница 14: ...ity in the temperature in C and the dew point in C are displayed Measuring mode UGL Equilibrium moisture content The relative humidity in the temperature in C and the equilibrium moisture content in are displayed Measuring mode Ah absolute humidity the relative humidity in and the absolute humidity in g m i e grammes ofwater in 1m of air Measuring mode En enthalpy the relative humidity in and the ...

Страница 15: ...easuring mode Wood the wood moisture in the temperature in C 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 C and the selected building material are displayed For information on the building material types see Chapter 5 1 Information and explanations on the individual mea...

Страница 16: ...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 Afterwards only the Max symbol and the 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 Fig...

Страница 17: ...eleted 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 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 Figur...

Страница 18: ...1 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 ...

Страница 19: ...0 seconds the device switches itself off automatically The current values are retained and are displayed again after it is switched back on 2 4 2 Battery Monitoring If the battery symbol appears in the 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 ...

Страница 20: ...0 C 10 to 60 C short term Power supply 9 V block battery Approved types type 6LR61 or type 6F22 Dimensions 180 x 50 x 30 L x W x H mm Weight approx 320 g 3 2 Prohibited Environmental Conditions Condensation air humidity continuously too high 85 and damp Permanentpresence ofdustand combustible gases fumes and solutions Environmental temperatures continuously too high 50 C Environmental temperatures...

Страница 21: ...Specifications 21 Hydromette BL Compact RH T 3 3 Measuring Ranges Measuring ranges Air Humidity 0 to 100 RH 10 to 90 r H 2 RH Temperature 20 to 80 C 0 to 50 C 0 3 C ...

Страница 22: ... inactivity M 1 s M 2 s Hold measurement button pressed longer than 2 seconds Press measurement button briefly Graphical short operating instructions Legends 1 2 Main menu Min value reset menu Saved menu M M M 1 s M 1 s M 2 s 1 s M 1 s Max value blinks Max value blinks Measurement Memory 1 Saved value 1 M 2 s Measuring mode selection menu M 1 s Max value reset menu ...

Страница 23: ... 1 s Saved value 2 Memory 5 Value deleted Main menu M 1 s Value deleted Main menu M 1 s etc 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 1 2 3 3 Measured value See diagram measuring mode selection menu ...

Страница 24: ...operation of the Hydromette 4 1 Measuring Air Humidity 4 1 1 Absolute Humidity The amountof water vapour in g m in the air is termed absolute humidity The amountof water vapour cannotexceed a fixed specified amount 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 ...

Страница 25: ...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 constanthumidityand constanttemperature long enough 4 1 5 Water Activity AW Water activity is defined as the relative humidity that has to prevail in the surroun...

Страница 26: ...e 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 drier the surrounding air is Usin...

Страница 27: ...Application Instructions 27 Hydromette BL Compact RH T Figure 4 1 aspiration psychrometer ...

Страница 28: ...he 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 measurement...

Страница 29: ... point generallylies below the air temperature except with 100 r h where both temperatures are the same The dew point is dependenton the air temperature 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 Further information can be found in the Inter...

Страница 30: ...erature 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 C 30 40 50 60 70 80 90 C C C C C C C 30 10 5 14 9 18 5 21 2 24 2 26 4 28 5 30 4 30 4 ...

Страница 31: ... 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 del...

Страница 32: ...t 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 CompactRH T devices with tube lengths of 160 and 3...

Страница 33: ...e 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 byvarious mechanical and environmental influences These include in particular direct contact of the sensor with the fingers direct contact ...

Страница 34: ...ng with bodyparts e g hand as well as blowing or speaking breathing in the direction of the sensor Warning The sensor is notdesigned for continuous measurements atabove 80 r h longer than approx 36 hours at once without regeneration at30 40 r h in the same period ...

Страница 35: ...nvironmental 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 ...

Страница 36: ...values With organic building materials the water content is generallygiven 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...

Страница 37: ...2 0 2 4 2 6 3 8 Cement mortar 1 3 1 5 1 7 1 8 3 2 Lime mortar 1 3 1 6 1 8 1 9 3 4 Gypsum plaster plasterboard 0 5 0 6 0 7 1 0 Gypsum screed 0 6 0 8 0 9 1 3 Magnesite screed 7 0 8 3 8 7 13 0 Xylolite in accordance w ith DIN 11 0 13 5 14 5 16 7 Gas concrete Hebel 8 5 11 0 12 0 18 0 Elastizell screed 1 6 1 8 2 2 2 8 Anhydrite screed 0 5 0 6 0 7 0 9 Concrete 200 kg cement m3 sand 1 4 1 6 1 7 3 0 Concr...

Страница 38: ...idity Material Moisture 10 100 0 20 30 40 50 60 70 80 90 Relative humidity Fungus attack Outside moisture range Normal room moisture Central heated room moisture 6 8 10 12 14 16 18 20 25 30 1 5 2 2 5 3 3 5 2 1 0 5 0 3 Wood moisture content Mixed plaster Gypsum plaster Moist Normal Dry softwood ...

Страница 39: ...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 wood is stored in a particular climate for a long period it takes up the moisture matching this climate which is termed equilibrium moisture contentor equilibrium wood moisture content On reaching the e...

Страница 40: ...t Air temperature in C 10 C 15 C 20 C 25 C 30 C Relative air humidity Wood moisture content 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 ...

Страница 41: ...terial 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 22 Insulation wood fibre insulating board 23 Mineral wool insulation 25 Brick 32 Hardwood beech 33 Softwood pine ...

Страница 42: ...Appendix 42 Hydromette BL Compact RH T 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 ...

Страница 43: ...aterial are excluded from the guarantee When claiming under the guarantee the device must be sent post free to Gann Mess u 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 defecti...

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