GMH 3831, Precision Material and Building Moisture Meter, without Accessories
For the measurement of moisture in wood, building materials, insulating materials, straw, hay, paper, textiles and more...
The GMH3831 offers important advantages in handling, user-friendliness, functional range and accuracy for your metrological work. The absolute moisture content of 494 materials is displayed directly. The cumbersome usage of calculation tables now is history. Additionally you get a evaluation of your material state (wet/dry) of nearly all materials instantly.
- 466 wood characteristic curves
- 28 building material characteristic curves
- moisture evaluation
- display of moisture content -"u" or wet-basis moisture content "w"
- external temperature probes connectable
- serial interface or analog output 0-1V, freely adjustable
- Future-proof via updates
General applications: Precision measurements in cut wood, chip board, veneer, sawdust, wood chips, wood wool, flax, straw, hay, concrete, gas concrete, bricks, wash floor, cast, limestone mortar, cement mortar, paper, carton, textiles etc.
Users:Architects, experts, inspectors, building contractors, painters, carpenters, parquet joiners, floor tilers,
wood works, timber desiccation plants, building repair companies, textile industries etc.
The instrument is supplied without external probes. It has a BNC socket for the moisture probes and a thermovoltage-free socket for external thermocouples of the type K.
Suitable sensor can be ordered additionally according to the following presentation.
There is also the possibility to order complete accessory Sets for wood moisture or for wood and building moisture.
For the measurement of hard materials, there are optional accessories available.
Technical data:
Measuring principle:
moisture: resistive material-moisture-measuring, matching DIN EN 13183-2:2002
temperature external: thermocouple, NiCr-Ni (type K)
temperature internal: NTC
Characteristic curves: 494
Measuring ranges:
moisture: 0,0 to 100,0 % moisture content (depending on characteristic curve)
temperature: -40,0...+200,0°C (-40,0...+392,0°F)
Evaluation: in 9 steps (dry ... wet)
Resolution: 0,1% resp. 0,1°C (0,1°F)
Accuracy device at nominal temperature:
wood: ±0,2 % moisture content (deviation from characteristic curve at range 6...30%)
building material: ±0,2 % moisture content (deviation from characteristic curve)
temperature (external): ±0,5% v. MW ±0,3°C
Temperature compensation: automatically or manual
Sensor connection:
moisture: BNC
temperature: flat pin plug (free of thermo-voltage)
Perm. working temperature: -25 to 50 °C
Display: two 4 digit LCDs (12.4mm or 7mm high), as well as additional arrows.
Pushbuttons: 6 membrane keys
Output: 3-pin jack connector Ø3.5mm, choice between serial interface or analog output
- serial interface: direct connection to RS232 or USB interface of a PC via electrically isolated
interface adapter GRS3100 or GRS3105 resp. USB3100 (p.r.t. accessories).
- analog output: 0...1V, freely adjustable Power supply: 9V-battery, additional d.c. connector for external 10.5-12V direct voltage supply (suitable power supply: GNG10/3000).
Power consumption: approx. 2.5 mA
Dimensions / Weight: 142 x 71 x 26 mm, 155 g
Housing: Impact-resistant ABS plastic housing, membrane keyboard, transparent panel. Front side IP65, integrated pop-up clip
Functions:
Hold, Auto-Hold (automatic freezing of a constant value), Low battery warning, Auto Power Off
Accessories:
The GMH 3831 is supplied without any accessories.
For different application purposes there are also 3 optional accessory kits available:
SET 38 HF (wood moisture kit)
SET 38BF (wood and building moisture kit)
SET 38 MPS (MPA wood moisture kit)
Other optional accessories can be ordered separately.
