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1. www.usgs.gov › extensometers-and-compactionExtensometers and Compaction | U.S. Geological Survey - USGS.gov

   www.usgs.gov › extensometers-and-compaction

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   Extensometers measure the compaction and expansion of the aquifer system, providing depth-specific data that can help CAWSC scientists better understand the rate, extent, and at what depths in the system subsidence is occurring.

2. www.geokon.com › ExtensometersExtensometers - GEOKON

   www.geokon.com › Extensometers

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   Geokon, the world leader and manufacturer of Extensometers, also offers a custom design service for your geotechnical monitoring and engineering needs.

3. Videos

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     AutoX750 Automatic Contacting Extensometer

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     Introducing MTS Advantage Optical Extensometer

     Sep 21, 2021

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     Long Travel XL Extensometer

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4. rstinstruments.com › instruments › extensometersExtensometers Effective for Geotechnical Monitoring | RST ...

   rstinstruments.com › instruments › extensometers

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   Precise measurement of changes in distance between one or more anchors generates up-to-the-minute data when using an RST Instruments Extensometer.

5. www.usgs.gov › news › extensometer-hunters-searchingExtensometer Hunters: Searching for Long-Lost Technologies in ...

   www.usgs.gov › news › extensometer-hunters-searching

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   Mar 16, 2017 · CAWSC hydrologists Michelle Sneed and David Dillon went on a chase, driving more than 100 miles a day for four days, to look for old extensometers – tools that measure the compaction and expansion of aquifer systems.

6. www.mts.com › en › productsWater Cooled High Temperature Extensometers - MTS

   www.mts.com › en › products

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   These water-cooled high-temperature extensometers are designed for measuring axial strain in high temperature tension, compression, and through-zero fatigue testing applications up to 1200°C (2200°F).

7. data.cnra.ca.gov › eu › datasetLocation of 24 extensometers used to measure compaction in ...

   data.cnra.ca.gov › eu › dataset

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   This digital dataset describes the location of 21 extensometers used for observations of subsidence in the Central Valley Hydrologic Model (CVHM). The Central Valley encompasses an approximate 50,000 square- kilometer region of California.

8. People also ask

   What does an extensometer measure?

   • Extensometers measure strain, the change in length of a specimen divided by the original length (gauge length) of the specimen. Tinius Olsen offers wide range of extensometers based on your testing needs including video, optical and physical contact with specimen.

   Extensometers - Highly Accurate Measurement of Strain and Deflection

   www.tiniusolsen.com/product-category/extensometers/

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   How do extensometers measure strain?

   • Extensometers measure strain, which is calculated as the change in length of a specimen divided by the original length (gauge length) of the specimen and expressed as a percentage with high temperature or longer gage lengths.

   Extensometers - Highly Accurate Measurement of Strain and Deflection

   www.tiniusolsen.com/product-category/extensometers/

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   What is a vibrating wire inline extensometer?

   • The Vibrating Wire Inline Extensometer is primarily used in below-ground applications such as tunnels, dams, open pit mines, and underground caverns. These extensometers are fully enclosed assemblies consisting of multiple extension sections assembled together in series.

   Extensometers Effective for Geotechnical Monitoring - RST Instruments …

   rstinstruments.com/product-category/instruments/extensometers/

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   What is a borehole extensometer?

   • They are an important tool for ensuring the safety of underground operations such as tunnels, mines, and major excavations. Borehole Extensometers are rugged, easy to install extensometers that consist of a surface-level reference head and one or more anchor points embedded in a borehole and connected to the reference head by rigid rods.

   Extensometers Effective for Geotechnical Monitoring - RST Instruments …

   rstinstruments.com/product-category/instruments/extensometers/

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9. www.tiniusolsen.com › product-category › extensometersExtensometers - Highly Accurate Measurement of Strain and ...

   www.tiniusolsen.com › product-category › extensometers

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   Extensometers measure strain, the change in length of a specimen divided by the original length (gauge length) of the specimen. Tinius Olsen offers wide range of extensometers based on your testing needs including video, optical and physical contact with specimen.