Modular Extensometer

For measuring axial deformations and displacements in boreholes - the Modular Extensometer is a technical advancement of our proven Uni-Rod Extensometer. Electrical displacement transducers are used for automatic measurement. For manual measurement, a mechanical meter, a digital caliper or a portable electronic sensor with a digital reading device can be used.

The modular extensometer consists of the following elements:

  • Single measuring head for one measuring point, made of stainless steel tube with watertight closing protective cap
  • Centering disc to combine the single extensometers into a multiple extensometer
  • Extensometer rods to connect the touch pin in the measuring head with the anchor. The extensometer rods usually consist of a GRP Ø 7 mm rod in a PE 16 x 2 mm protective tube. Other rod designs (e.g. stainless steel or invar steel) are available on request
  • Extensometer anchor made of a thread bar or GRP with anchor rings

Instrumentation example: Combined installation with inclinometer and extensometer in one borehole. 

Downloads

Munich 2nd main line (S-Bahn), Marienhof construction lot

Bern Postparc railway station Lot 1.2 Measuring system interception bar north and south

Göteborg

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Markus Stolz

Civil Engineer

Member of the extended executive board
Division manager geotechnics /
Geotechnical instrumentation and measurements / hiDCon

T +41 (0) 44 806 29 41
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Médéric Piedevache

Engineering Geologist ENSG

Member of the extended executive board
Branch manager Nancy, France

T +33 (0) 3 83 94 04 50
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Dr. Sebastian Brenne

Geoscientist

Project Manager

T +49 (0) 234 90447 17
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