Related Manuals for GANN RH-T 37 BL
Summary of Contents for GANN RH-T 37 BL
- Page 1 Version 2.2 Operating Instructions Active Electrode RH-T 37 BL RH-T 37 BL flex RH-T 37 BL...
-
Page 2: Table Of Contents
Measuring Mode Selection Menu (Ring Menu) .. 12 2.2.3 Maximum Value Display ........15 2.2.4 Minimum Value Display ........16 2.2.5 Memory Menu ............ 17 Specifications..............18 Technical Data ..............18 Prohibited Environmental Conditions ....... 19 Measuring Ranges ............19 Storage conditions ............19 RH-T 37 BL... - Page 3 Rel. Humidity for Condensation Calculation . 26 Handling the Hydromette ..........27 Sorption Isotherms ............27 4.4.1 Building and Insulation Materials ......31 4.4.2 Wood ..............36 Appendix ................38 Material Table ..............38 References ..............39 General Concluding Remarks.......... 39 RH-T 37 BL...
-
Page 4: 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. Regeltechnik GmbH. Subject to technical and documentary changes. All rights reserved. This document was prepared with the required care. -
Page 5: General Notes
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. -
Page 6: Weee Directive 2002/96/Ec Law On Electrical And Electronic Equipment
Measurements must not be carried out on metallic surfaces. Gann Mess- u. Regeltechnik GmbH accepts no liability for damage resulting from non-adherence to the operating instructions 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. -
Page 7: Introduction
The model flex has a flexible sensor tube (6.55mm diameter, swan neck) and is therefore excellent for measurements of points that are difficult to access. The RH-T 37 BL is eminently suited to moisture analyses, damage evaluation, dehumidifying buildings and checking the readiness of floor and wall coatings. -
Page 8: Device Layout
Introduction Device Layout Sensor Hydromette BL UNI 10 Handle RH-T 37 BL... -
Page 9: Display Symbols
Main menu symbols Air humidity in % Measured value is held; ready for measurement Temperature in °C Dew point (Dp) in °C Other symbols Min/Max display Air humidity in % Dead battery Temperature in °C Memory location 1 RH-T 37 BL... -
Page 10: Basic Functions
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. RH-T 37 BL... -
Page 11: Setting Menu
"Max" flashes on the display. If the value is not to be saved, the "M" button must be pressed briefly. If the value is not to be saved, a new measurement is started with a long press on the "M" button without changing the previous maximum values. RH-T 37 BL... -
Page 12: Measuring Mode Selection Menu (Ring Menu)
2.2.2 Measuring Mode Selection Menu In this menu, the various modes for the RH-T 37 BL 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. - Page 13 Measuring mode "Ah" (absolute humidity): the relative humidity (in %) and the absolute humidity (in g/m³ i.e. grammes of water in 1m³ of air) Measuring mode "En" (enthalpy): the relative humidity (in %) and the enthalpy (in kJ/k) are displayed. RH-T 37 BL...
- Page 14 (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 measuring modes can be found in Chapter 4 "Application instructions" RH-T 37 BL...
-
Page 15: Maximum Value Display
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 2-4: deleted max. value RH-T 37 BL... -
Page 16: Minimum Value Display
"M" button, the entry is Figure 2-5: confirmed and the device returns to the min. value Ready mode. With the "M" button, a new measurement can then be carried out immediately. Figure 2-6: deleted min. value RH-T 37 BL... -
Page 17: Memory Menu
With a short press of the "M" button, the next memory location "r2" is selected and the value contained there is displayed. After reaching the 5th memory location, the first is shown again. The menu can be exited with the up and down buttons. RH-T 37 BL... -
Page 18: Specifications
Sensor pipe: 160 x 5,5 mm Active electrode RH-T 37 BL 320 Sensor pipe: 320 x 5,5 mm Active electrode RH-T 37 BL FLEX 250 Sensor pipe: 250 x 6,5 mm Active electrode RH-T 37 BL FLEX 350 ... -
Page 19: Prohibited Environmental Conditions
Fumigation from foam materials that have not been supplied by us may damage the sensor system and lead to falsified measuring values. Therefore it is particularly important that the device is not stored in such a material. RH-T 37 BL... -
Page 20: Application Notes
Application Notes 4 Application Notes On the following pages, you will find information on the various measuring modes of the RH-T 37 BL (Chapters 4.1, 4.2 and 4.3) and on the operation of the device. Measuring Air Humidity 4.1.1 Absolute Humidity The amount of water vapour in g/m³... -
Page 21: Relative Air Humidity
0 and 1 aw. The water activity is a measure of the degree of freedom of the free water (of various types) bound in a material. RH-T 37 BL... - Page 22 The wet-bulb temperature (in the drawing (T2)) is determined with a psychrometric measurement with a thermometer provided with a damp material cover. The wet-bulb temperature is mainly of interest where large amounts of liquids evaporate, such as in wood drying machinery. RH-T 37 BL...
- Page 23 Application Notes Figure 4-1: aspiration psychrometer RH-T 37 BL...
-
Page 24: Enthalpy
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). RH-T 37 BL... -
Page 25: Dew Point Temperature
The water vapour partial pressure is calculated as follows: ������. ℎ�������������� �� ������. ���������� ������������ ����������. ���������� ������������ ���������������� = Further information can be found in the Internet. RH-T 37 BL... -
Page 26: Dew Point Dependent On The Air Temperature And The Rel. Humidity For Condensation Calculation
4.2.2 Dew Point Dependent on the Air Temperature and the Rel. Humidity for Condensation Calculation Dew point in °C at a relative humidity of: temperature Moisture saturation= °C amount of water in g/m³ °C °C °C °C °C °C °C 10,5 14,9 18,5... -
Page 27: Handling The Hydromette
Application Notes Handling the Hydromette The active electrode RH-T 37 BL 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, and commence the measurement. -
Page 28: Sorption Isotherms
Application Notes 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 content of the surface (i.e. of the material) can be described and represented by a curve. - Page 29 Application Notes reliability where there is insufficient information on the composition of the screed. Handling For the measurement, a hole with a diameter of 7 mm or 8 mm (flex) mm and a depth of at least 40 mm is drilled. The drilling depth depends on the required measurement depth or screed thickness.
- Page 30 Application Notes Measurement errors Measurements under 20 % r.h. and above 80 % r.h. should not be carried out over a long period where possible (continuous measurements). Other 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.
-
Page 31: Building And Insulation Materials
Application Notes 4.4.1 Building and insulation materials 4.4.1.1 Equilibrium moisture content/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. - Page 32 In percent by volume, with double the density the display will be twice as high. For materials not included in the RH-T 37 BL, there are currently no sorption isotherms confirmed or checked by us Hydromette BL Compact RH-T...
- Page 33 Application Notes 4.4.1.2 Equilibrium Moisture Values in Percent by Weight Building materials at 20 °C, at 20 °C, at 20 °C, approx. 50 approx. 65 approx. 90 % RH % RH % RH Cement screed (sealed), applied rel. dry) 1,7 - 1,8 Cement screed (unsealed, applied rel.
- Page 34 Application Notes 4.4.1.3 Comparison graphic of air humidity - material moisture Hydromette BL Compact RH-T...
- Page 35 Application Notes Notes on graphic in section 4.4.1.3: The areas shown in the graphic mean: Ambient climate % r.F. Material condition Equilibrium zone Moist Light area: dry Equilibrium moisture content reached. Shaded area: adjustment area Caution! Coatings or adhesives without diffusion properties should not yet be processed.
-
Page 36: Wood
Application Notes 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 content or equilibrium wood moisture content. On reaching the equilibrium moisture content, the wood no longer loses moisture if the surrounding conditions remain the same and also does not take up any moisture. - Page 37 4,40% 4,30% 6,30% 6,20% 6,10% 6,00% 5,90% 7,90% 7,80% 7,70% 7,50% 7,50% 9,40% 9,30% 9,20% 9,00% 9,00% 11,10% 11,00% 10,80% 10,60% 10,50% 13,30% 13,20% 13,00% 12,80% 12,60% 16,20% 16,30% 16,00% 15,80% 15,60% 21,20% 21,20% 20,60% 20,30% 20,10% RH-T 37 BL...
-
Page 38: Appendix
Appendix 5 Appendix Material Table Material identifier Description Code Cement screed Anhydrite screed Concrete Cement mortar Gypsum plaster Lime sand brick Lime cement mortar Insulation wood fibre insulating board Mineral wool insulation Brick Hardwood/beech Softwood/pine RH-T 37 BL... -
Page 39: References
RH-T 37 BL... - Page 40 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.