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Summary of Contents for GANN HYDROMETTE BL H 41
- Page 1 Version 1.1 Operation instructions HYDROMETTE BL H 41 Hydromette BL H 41...
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Page 2: Table Of Contents
Maximum value display ........16 2.3.5 Minimum value display ........17 2.3.6 Memory menu ............ 18 Other functions ..............19 2.4.1 Automatic switch-off ........... 19 2.4.2 Battery monitoring ..........19 2.4.3 Changing the electrode pin ......... 19 Hydromette BL H 41... - Page 3 Introduction ............27 4.2.2 Handling ............. 27 Test adapter for wood moisture measurement ....29 Static charge..............29 Table of wood types ............30 Appendix: Accessories ............. 31 Wood moisture measurement.......... 31 Wood fibre insulating materials........32 Hydromette BL H 41...
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Page 4: Publication Statement
Introduction 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- Regeltechnik GmbH. Subject technical 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: Safety Advice
Wood and other materials should not be measured on conductive 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 and handling of the device during operation, even if this requirement for care is not specifically addressed in the operating instructions. -
Page 7: Introduction
Introduction 1 Introduction Description The Hydromette BL H 41 is an electronic wood moisture measuring device for precise measurement of sawn timber (up to 180 mm thick), chipboard and veneers with a high-quality measurement amplifier and 3-line LCD display. The device has a wood type switch to automatically correct measurement values for over 300 types of wood as well as wood temperature compensation. -
Page 8: Device Layout And Button Assignment
Introduction Device layout and button assignment Electrode connection Display Up button On/off button Measurement button Down button Hydromette BL H 41... -
Page 9: Display Symbols
Main menu symbols Wood moisture Measured value is held. Ready for measurement Device temperature in °C Wood type classification number Wood symbol Other symbols Min/Max display Wood moisture Battery symbol Compensation temperature "c" in °C Wood symbol Hydromette BL H 41... -
Page 10: Basic Functions
"Hold" symbol Last measured device temp. in °C Wood symbol classification number Figure 2-1 Main menu In this menu, a new measurement can be started by pressing the measurement button "M". See also section 2.2 "Measuring mode". Hydromette BL H 41... -
Page 11: Display In Measuring Mode
"Down" button is shown. Measurement menu (main menu): Use to carry out the measuring process. Wood type setting: The wood type can be selected here. Temperature menu: The temperature compensation can be set here. Hydromette BL H 41... -
Page 12: Measurement Menu (Main Menu)
"M" button without changing the previous saved maximum or minimum values. If the measurement range is not reached or exceeded a flashing measured value shows a (H 41: < 4.5%, > 45%) warning, which is also alternately marked with "LO" or "HI". Hydromette BL H 41... -
Page 13: Material Setting
The wood types are displayed by a fir tree symbol and the correspondingly selected type number, e.g.: Fir tree 2 = Wood type 2 With wood fibre insulating boards, the method of manufacture for the selected board appears in the upper area in WET and DRY. In Hydromette BL H 41... - Page 14 The selected wood fibre insulating board has a gross density from 180 … kg/m ... to 200 kg/m There are 6 different characteristic curves for wood fibre insulating boards. These can be found in the appendix. Hydromette BL H 41...
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Page 15: Temperature Compensation
"Down" buttons. The change is saved by pressing the "M" button again briefly (< 1 s). You are then back in the measurement mode. Important: At our factory the compensation temperature is always set at 20 °C. Hydromette BL H 41... -
Page 16: Maximum Value Display
"M" button again, the deletion of the value is confirmed and the % symbol disappears. The device now returns to Ready mode. Using the "M" button, a new measurement can then be carried out. Hydromette BL H 41... -
Page 17: Minimum Value Display
"M" button again, the deletion of the value is confirmed and the % symbol disappears. The device now returns to Ready mode. Using the "M" button, a new measurement can then be carried out. Hydromette BL H 41... -
Page 18: Memory Menu
After reaching the 5th memory location, the first one is shown again. The saved values displayed can be identified by the fact that no "Hold" symbol is shown in the display. Hydromette BL H 41... -
Page 19: Other Functions
To change the electrode pin (M 18 / M 20), the hex screw must be screwed out. The pins can then be simply replaced. To prevent measurement errors and breakage of the electrode pins, the hex screws must be well tightened and the area between the pins kept clean. Hydromette BL H 41... -
Page 20: Specifications
Condensation, humidity continuously high (> 85 %) and wetness Permanent presence of dust and combustible gases, fumes or solutions Ambient temperatures continuously high (> +40 °C) Ambient temperatures continuously (< +5 °C) Hydromette BL H 41... -
Page 21: Measuring Ranges
4 Application notes Notes on measuring wood moisture The measurement of wood moisture is carried out with the Hydromette BL H 41 using resistance measurement. This enables the direct display of the moisture in percent by weight. The display range... -
Page 22: Introduction
Application notes 4.1.1 Introduction The Hydromette BL H 41 works by measuring electrical resistance or conductivity, a principle which has been well-known for many years. This process is based on the fact that electrical resistance is highly dependent on the amount of moisture in the wood. The conductivity of oven-dried wood is very low, or the resistance is so high that no current worth mentioning can flow. -
Page 23: M 20 Hammer-In Electrodes
The measurement depth is approx. 3 mm, so multiple sheets of veneer must be laid on top of each other for the measurement. Do not measure on metal When measuring stacks of veneer, to expose the surfaces! Hydromette BL H 41... -
Page 24: Push-In Electrode M 19
Pulling out the needles is also done with the slide hammer with the impact direction upwards. Where possible, the hex nuts should be tightened with a spanner or pliers before beginning a measurement sequence. Loose electrode pins break easily. Hydromette BL H 41... - Page 25 If wood is to be measured with a large difference in the spread of moisture (e.g. accumulations of water), we recommend the use of Teflon-insulated electrode pins, which enable very precise measurement of zones and layers. They are available in packets of Hydromette BL H 41...
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Page 26: Equilibrium Wood Moisture Content
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 Hydromette BL H 41... -
Page 27: Measurements On Wood Fibre Insulating Boards
The measurement electrodes are fastened to the M 20 electrode by means of the electrode nut. (See picture). Figure 4-3 Wood fibre insulating material electrode on M 20 electrode Hydromette BL H 41... - Page 28 Figure 4-4 Wood fibre insulating material electrode For the application of the push-in electrode M 19: Connect the electrode to the measuring cable MK 8 and push it (by using a hammer) into the finished thermal insulation composite systems . Hydromette BL H 41...
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Page 29: Test Adapter For Wood Moisture Measurement
A significant improvement can be achieved by ensuring the operator and the measuring device remain completely still during the measurement process and by earthing (touching conducting metal, water or heating pipes, etc.). Hydromette BL H 41... -
Page 30: Table Of Wood Types
(s. p. 13). The number can be found in the wide species table that was supplied together with the Hydromette BL H 41. 5.2 Wood fibre insulating materials The numbers for wood fibre insulants are listed directly after wood species. -
Page 31: Appendix: Accessories
Electrode pins with insulated shank -45 mm long (order no. 4550) with 25 mm insertion depth -60 mm long (order no. 4500) with 40 mm insertion depth MK8 measuring cable – length: 1 m (order no. 6210) Hydromette BL H 41... -
Page 32: Wood Fibre Insulating Materials
For measuring wood fibre insulating material with special electrodes and insulated electrode nuts Push-in electrode M 19 (order no. 3400) The electrode is used for measuring in finished thermal insulation composite systems. MK8 measuring cable – length: 1 m (order no. 6210) Hydromette BL H 41...
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