H60.0.11.6C-16 Resistive material moisture and temperature measuring Instrument as of version 2.1 Operating Manual GMH 3830 GMH 38 Series Materialfeuchte / material moisture keep for future reference WEEE-Reg.-Nr. DE 93889386 GHM Messtechnik GmbH • Standort Greisinger Hans-Sachs-Str. 26 • D-93128 Regenstauf +49 (0) 9402 / 9383-0 +49 (0) 9402 / 9383-33 info@greisinger.
H60.0.11.6C-16 Operating Manual GMH 3830 _____________________________________________________ Page 2 of 18 _____________________________________________________________________________ Index 1 2 GENERAL ADVICE.................................................................................................................................................. 3 INTENDED USE ........................................................................................................................................
H60.0.11.6C-16 Operating Manual GMH 3830 _____________________________________________________ Page 3 of 18 _____________________________________________________________________________ 1 General advice Read through this document attentively and make yourself familiar to the operation of the device before you use it. Keep this document in a ready-to-hand way in order to be able to look up in the case of doubt. 2 Intended use The device is suitable for the measurement of moisture content and temperature.
H60.0.11.6C-16 Operating Manual GMH 3830 _____________________________________________________ Page 4 of 18 _____________________________________________________________________________ 3 Product description 3.1 Scope of delivery GMH 3850 9V battery type IEC 6F22 Operating Manual 3.2 Operating and Maintenance 1. Battery Operation The battery has been used up and needs to be replaced, if “bAt“ is shown in lower display. The device will, however, continue operating correctly for a certain time.
H60.0.11.6C-16 Operating Manual GMH 3830 _____________________________________________________ 3.4 Connections 1. 2. 3. 4. 3.5 Page 5 of 18 _____________________________________________________________________________ Output: Operation as interface: Connect to optically isolated interface adapter (accessory: GRS 3100, GRS3105 or USB3100) Operation as analogue output: Connection via suitable cable. Attention: The output mode has to be configured (p.r.t 2.
H60.0.11.6C-16 Operating Manual GMH 3830 _____________________________________________________ Page 6 of 18 _____________________________________________________________________________ 4 Device Configuration For configuration of the device press "Menu"-key (key 4) for 2 seconds, the first menu will be shown. Choose between the individual values that can be set by pressing the "Menu"-key (key 4) again. The individual values are changed by pressing the keys "" (key 2) or "" (key 5).
H60.0.11.6C-16 Operating Manual GMH 3830 _____________________________________________________ Page 7 of 18 _____________________________________________________________________________ 5 Some basics of precision material moisture measuring 5.1 Moisture Content u and Wet-Basis Moisture Content w Depending on the Application one of the two units is necessary. Carpenters, joiners and the like commonly use the moisture content u (sometimes referred to as MC). When evaluating firewood, wood chips etc.
H60.0.11.6C-16 Operating Manual GMH 3830 _____________________________________________________ 5.5 Page 8 of 18 _____________________________________________________________________________ Measuring In Wood: Measuring With Two Measuring-Needles Normally wood is measured with measuring-needles. Used electrodes: impact-electrode GSE91 or GSG91, reciprocating piston electrode GHE91.
H60.0.11.6C-16 Operating Manual GMH 3830 _____________________________________________________ 5.7 Page 9 of 18 _____________________________________________________________________________ Measuring of materials, having no characteristic curves stored Choose the representative universal material group „h.A“, „h.b“, „h.c“ and „h.d“(for example corresponding to A,B,C and D of the GHH91) if a conversion table exists.
H60.0.11.6C-16 Operating Manual GMH 3830 _____________________________________________________ Page 10 of 18 _____________________________________________________________________________ 7 Output The output can be used as serial interface (for GRS3100 or GRS3105 interface adapters) or as analogue output (0-1V). If none of both is needed, we suggest to switch the output off, battery life then is extended. 7.1 Interface - Base Address ('Adr.
H60.0.11.6C-16 Operating Manual GMH 3830 _____________________________________________________ Page 11 of 18 _____________________________________________________________________________ 9 Fault and System Messages Display Meaning Remedy Blinking curve display: Displayed value is out of specified range (Wood: 8..
H60.0.11.6C-16 Operating Manual GMH 3830 _____________________________________________________ Page 12 of 18 _____________________________________________________________________________ 12 Specification Measuring Principle - - - Channel1 Channel2 Resistive material-moisture-measuring Temperature-measuring thermocouple type K matching DIN EN 13183-2: 2002 or internal temperature-measuring Char.
H60.0.11.6C-16 Operating Manual GMH 3830 _____________________________________________________ Page 13 of 18 _____________________________________________________________________________ 14 Appendix A: Sorts of wood Select kind of wood you want to measure, enter number on the device, e.g. birch = h. 60 Identification Number Comment Group A h. A Wood-group A (equal to GHH91 selector “A”) Group B h. B Wood-group B (equal to GHH91 selector “B”) Group C h.
H60.0.11.6C-16 Operating Manual GMH 3830 _____________________________________________________ Blackwood Bloodwood, Red Bollywood Bossime Box Grey Box Grey Coast Box, Black Box, Brush (Location Unknown) h.64 h.66 Litsea reticulata h.67 Drypetes spp, h.70 Eucalyptus moluccana h.75 Eucalyptus bosistoana h.76 Eucalyptus lafgiflorens h.
H60.0.11.6C-16 Operating Manual GMH 3830 _____________________________________________________ Hardwood, Johnstone River Hemlock / Hemlock, Western Hemlock, Chinesische Hevea Hickory Hollywood, Yellow Horizontal Incensewood Iroko Ironbark, Ironbark, Ironbark, h.171 h.172 Tsuga chinensis h.173 Hevea Brasiliensis h.174 Carya spp. h.175 Premna lignum-vitae h.176 Bakhousia bancroftii 5..78% Mahogony, Phillipines Tsuga heterophylla 8..
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H60.0.11.6C-16 Operating Manual GMH 3830 _____________________________________________________ Page 18 of 18 _____________________________________________________________________________ 15 Appendix B: Additional materials Select material you want to measure, enter number on the device, e.g. concrete b25 = b. 6 15.
17.03.2006, BR Moisture Conversions Seite 1 Units of moisture measurings and their conversions Established moisture measuring instruments (like GMH3830 before V1.4) are displaying the material moisture relative to the dry weight of a material. In practice other units are used, too, especially the wet basis moisture content. The display of newer instruments (like GMH3830 V1.4 or GMR100) can be switched to both units.
17.03.2006, BR Moisture Conversions Seite 2 rarely used: Dry-Content The unit is % again. dry content[%] = weightdry / weightwet *100 Conversion meter display u -> dry content dry content[%] = 10000 / ( 100 + Moisture content u[%]) Examples: 1kg of wet wood, which contains 500g of water has a moisture content u of 50% 1kg of wet wood, which contains 200g of water has a moisture content u of 80% GREISINGER electronic GmbH Hans-Sachs-Straße 26 D-93128 Regenstauf Tel.
H60.0.71.6C-04 Operating Manual Appendix Moisture measuring set for agricultural applications as of version 2.1 GMH 38-LW1 / -LW2 WEEE-Reg.-Nr. DE 93889386 GMH Messtechnik GmbH • Standort Greisinger Hans-Sachs-Straße 26 • D-93128 Regenstauf +49 (0) 9402 / 9383-0 +49 (0) 9402 / 9383-33 info@greisinger.
H60.0.71.6C-04 Manual Appendix GMH 38-LW1 / -LW2 _____________________________________________________ page 2 of 8 _____________________________________________________________________________ 1 General Note Read this document carefully and get used to the operation of the device before you use it. Keep this document within easy reach near the device for consulting in case of doubt.
H60.0.71.6C-04 Manual Appendix GMH 38-LW1 / -LW2 _____________________________________________________ 4 page 3 of 8 _____________________________________________________________________________ Product Description 4.1 Scope of supply The scope of supply of the GMH 38-LW Sets includes: measuring probe GSF 50 TFK or GSF 50 TF Display instrument of GMH 38 series with 9V battery and operating manual Operating manual appendix GMH 38-LW1/-LW2 4.
H60.0.71.6C-04 Manual Appendix GMH 38-LW1 / -LW2 _____________________________________________________ page 4 of 8 _____________________________________________________________________________ 6 Handling 6.1 Start of operation Switch the device on with the on/off key. After segment test the device is ready for measuring. 6.2 Selection of the characteristic curve Selection of characteristic curve: by pressing the characteristic curve can be selected.
H60.0.71.6C-04 Manual Appendix GMH 38-LW1 / -LW2 _____________________________________________________ page 5 of 8 _____________________________________________________________________________ 9 Measuring of grain For the storability, their quality assessment and purpose, the 38-LW Set is an important support of decision – beside the decision of smell (fusty?) – Consistence (dust…) and appearance (colour, impurities).
H60.0.71.6C-04 Manual Appendix GMH 38-LW1 / -LW2 _____________________________________________________ page 6 of 8 _____________________________________________________________________________ 10.2 Bucket test The probes from suitable places in Your material into a bucket ( (>=10 litre). Compress: Step into the bucket and compress with roughly 10 kg.
H60.0.71.6C-04 Manual Appendix GMH 38-LW1 / -LW2 _____________________________________________________ page 7 of 8 _____________________________________________________________________________ Accuracy Wood pellets Pellet measuring is similar (also h.461), but the specified range ends already at 20 % u. Keep probe clean! Especially when measuring in wet hay, the probe may be soiled very strong, this may produce to low measuring displays.
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