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Geosense VW Jointmeter

Geosense jointmeter med svingende streng(vw)-teknologi brukes til å overvåke bevegelser langs skjøter i betongkonstruksjoner. Svingende streng-utgangen tillater å enkelt lese av data ved hjelp av en håndavleser eller automatiserte målesystemer som eksempelvis en Cautus Logger for kontinuerlig overvåking.

  • Ideell for overvåking av betongskjøter bruer, dammer, støttemurer og betongdekker
  • Gir stabile målinger i krevende miljø
  • Håndterer skjærbevegelser og lange kabelstrekk


The Vibrating Wire Jointmeter is used to monitor joints of mass concrete structures.

The instrument consists of two parts, a socket and the main body with a waterproof vibrating wire sensing gauge. During construction of the structure, the socket is secured to the form and embedded into a lift of the block to be constructed. After removal of the form and prior to concreting of the adjacent block, the gauge is screwed into the socket, set at the desired range and then embedded.

Opening and closing of the joint is then measured by the gauge, which is firmly anchored in both blocks. The instrument body includes universal joints on which the sensing element is mounted, accommodating a small degree of shear movement that might occur.

The vibrating wire jointmeter is a robust and accurate instrument with excellent long-term stability. It can be measured by vibrating wire portable readout units or a data logger if remote continuous monitoring of the joints is required. All measurements are compared to an initial datum reading, providing a history of magnitude and rate of movement at the joint.

  • Ranges: 15, 25, 50 mm (other ranges available)
  • Over range: 1.25 x range
  • Resolution: 0.025% FS
  • Accuracy: 0.2% FS (0.1% optional)
  • Operating temperature range: -20 to +80°C
  • Cable: Two twisted pairs with polyurethane jacket
  • Diameter: 51 mm
  • Lengths: 15 and 25 mm range: 340 mm; 50 mm range : 430 mm

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