Moisture Meter

Moisture Meter

 

an instrument for measuring the moisture content in gases, liquids, and solids (including free-flowing solids).

The moisture in the air is usually measured with hygrometers and psychrometers. In hygroscopic electrochemical moisture meters the moisture of a gas is determined from the changes in properties of an electrolyte in the meter’s bulb.

The moisture in liquids (that is, the content in a water-liquid mixture where water is not the chief component, such as in petroleum or alcohol) is measured by means of capacity moisture meters that determine the dielectric constant or dielectric loss in the liquid, by conductance moisture meters that measure the liquid’s electrical conductivity, and by hygroscopic electrochemical moisture meters for gases that have built-in evaporators.

The moisture in solids is determined by means of capacity and conductance moisture meters. Use is also made of the resonance absorption of radio waves by the hydrogen nuclei in water molecules. With this type of meter the material being tested is placed within the coil of the oscillatory circuit of a radio-frequency transmitter, whose frequency can be changed continuously. At the frequency corresponding to the nuclear magnetic resonance the energy absorption increases sharply in the oscillatory circuit; the magnitude of the absorbed energy provides a measure of the material’s moisture. Radio isotope moisture meters compare the quantitative characteristics of interactions between the nuclear radiations and atoms of hydrogen and atoms of other elements. Those most commonly used depend on the attenuation of-γ-rays and the slowing down of fast neutrons.

References in periodicals archive ?
Tenders are invited for Supply Of Scientific Equipments (Ten), Water Distillation unit, Vortex mixer (cyclo mixture), Semi-dry blot cell, Water bath shaker, Digital balance, Magnetic stirrer, Micro centrifuge, Moisture meter, Micropipette set, Electrophoresis submerged gel
NASDAQ: FLIR) announced this week the new FLIR MR160 Imaging Moisture Meter for contractors, plumbers, roofers, energy efficiency experts, building inspectors, and moisture remediation professionals.
For additional moisture meter suppliers, visit RedBookOnline.
Send your answers, your name, address, email address and telephone number to: "Daily Post Moisture Meter competition", Woodfuel Wales, Unit 6, Dyfi Eco Park, Machynlleth, SY20 8AX.
A wood moisture meter costs as little as $20 at most home improvement retailers.
A chartered surveyor will undertake the correct investigation with the aid of the appropriate equipment, such as electronic moisture meter, capacitance meter and electronic hygrometer to ensure the correct diagnosis.
The deal was brokered on behalf of the private landlord by Cooke & Arkwright and the move comes as Cutest invests more than PS35,000 in testing equipment including a Canfield Visia Imaging Booth from the USA and a Skicon Moisture Meter from Japan.
Wagner Meters has added an Infrared Thermometer to its Rapid RH Concrete Moisture Meter product line-up.
I also have a moisture meter, one for wood, one for wallboard, and one for concrete.
The reduction in moisture content over time was monitored by a resistance-type moisture meter.
I have a hand-held digital wood moisture meter (see photograph) that I use to measure the moisture content of wood.