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2. Neutron moisture gauge - Wikipedia

   en.wikipedia.org/wiki/Neutron_moisture_gauge

   A neutron moisture meter is a moisture meter utilizing neutron scattering.The meters are most frequently used to measure the water content in soil or rock. The technique is non-destructive, and is sensitive to moisture in the bulk of the target material, not just at the surface.

3. Moisture meter - Wikipedia

   en.wikipedia.org/wiki/Moisture_meter

   The second type of moisture meter relies on the dielectric properties of wood. The meter incorporates two pads which serve as rubber electrodes that transmit and receive a signal when pressed into the wood substrate. The pad type moisture meter is non-invasive in nature and requires only surface contact with the wood to obtain a reading.

4. Cover meter - Wikipedia

   en.wikipedia.org/wiki/Cover_Meter

   A cover meter is an instrument to locate rebars and ... not influenced by moisture and heterogeneities of ... ACI Concrete Practices Non Destructive testing 228 ...

5. Soil moisture sensor - Wikipedia

   en.wikipedia.org/wiki/Soil_moisture_sensor

   A simple soil moisture sensor for gardeners. Soil moisture sensors measure the volumetric water content in soil. [1] Since the direct gravimetric measurement of free soil moisture requires removing, drying, and weighing of a sample, soil moisture sensors measure the volumetric water content indirectly by using some other property of the soil, such as electrical resistance, dielectric constant ...

6. Nondestructive testing - Wikipedia

   en.wikipedia.org/wiki/Nondestructive_testing

   Non-Destructive Testing (NDT/ NDT testing) Techniques or Methodologies allow the investigator to carry out examinations without invading the integrity of the engineering specimen under observation while providing an elaborate view of the surface and structural discontinuities and obstructions. The personnel carrying out these methodologies ...

7. TDR moisture sensor - Wikipedia

   en.wikipedia.org/wiki/TDR_moisture_sensor

   A TDR waveguide with exposed wires. In the waveform analysis a sensor (usually a probe) is placed in the material to be tested. The sensor contains a waveguide consisting of two, three, or more parallel wires which is connected via a coaxial cable to a voltage pulse generator which sends precisely defined voltage pulses into the sensor.