Measuring humidity is one key factor In quality control of agricultural products, sawdust, organic fertilizers, and wood, it directly affects the durability, mechanical properties, production efficiency, and shelf life of the materials.
Moisture meters for agricultural and forestry products (wood) primarily operate based on physical principles related to the electrical properties of water. The two most common principles are: Principle of resistance measurement and principle of capacitance measurement.
The importance of measuring humidity.
WoodMoisture content determines the quality and lifespan of furniture and construction products. Wood with substandard moisture content is prone to warping, shrinking, cracking, and reduced aesthetic appeal during use.
Testo 606-1 Moisture meter for wood and concrete materials
SawdustIn pellet production, controlling the moisture content of sawdust is essential to ensure consistent product quality, prevent dampness and flammability, and increase compression efficiency.
Organic fertilizerHumidity affects decomposition processes, the growth of beneficial microorganisms, and shelf life. Inadequate humidity can lead to mold growth or reduced nutritional effectiveness.
SATO SK-970A Moisture meter for organic fertilizer and wood sawdust, 23.0 to 80.0 %
Common methods for measuring moisture content: There are two main methods for determining the moisture content of a material:
Drying method (standard method)This method is based on the principle of determining the mass of water lost when drying a material sample to a constant mass.
ProcedureWeigh the initial sample, dry the sample in a drying oven at a suitable temperature (e.g., 103 ± 2°C for wood) until the weight is constant, then weigh the dried sample again.
Advantage: Highly accurate, considered a method of arbitration.
DisadvantagesTime-consuming (it can take several hours to several days) and requires laboratory equipment.
A&D MX-50 Solid moisture analyzer 51g x 0.001g x 0.01%
Use an electronic moisture meter (quick method)This is a common method in production and for rapid on-site testing.
RuleMost moisture meters operate on the principle of measuring the electrical resistance or dielectric constant of a material, then converting it into a percentage of moisture.
DeviceSpecialized moisture meters for wood, sawdust, and organic fertilizer are available on the market, usually with probes or electrodes that plug directly into the material. Semiki is a reliable and authorized distributor of these products.
AdvantageFast, convenient, and provides instant results.
DisadvantagesThe instrument needs to be calibrated periodically, and results may be affected by temperature or material density.
SATO SK-960A Moisture testing equipment for agricultural products (5 types)
SEMIKI Company offers a wide variety of moisture meters from many reputable brands, for example:
SANKO TG-101 Wood and Paper Moisture MeterThis is a DC resistance moisture meter, easy to use, suitable for measuring the moisture content of both hardwoods and softwoods, with a measuring range from 6% to 50%.
SATO SK-970A Organic Fertilizer/Wood Husk Moisture MeterThis device is specifically designed for organic fertilizers and wood chips, with a measuring range from 23.01 TP3T to 80.01 TP3T.
Material moisture meter Testo 616: This device allows for rapid, non-destructive measurement of moisture content in wood and building materials, with 10 characteristic curves for different material types.
KETT Electric Grain Moisture MeterSEMIKI is also a distributor of KETT brand grain moisture meters, suitable for testing the quality of agricultural products.
Contact Semiki directly: You can find Semiki's contact information (via website or phone number) to request a quote and specific advice.
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