Geotechnical

   
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Embankment Extensometers
Sisgeo Embankment Extensometers

Product Features
 
  • Sisgeo Embankment Extensometers to measure soil strains in large earth structures.
  • Embankment extensometers are usually incorporated in the filling material, chained together by means of extension rod.
  • Consists of several measuring units connected by extension rod to the anchor plates.
  • Measuring unit is a telescopic section equipped with displacement transducer. Vibrating wire displacement transducers are available in different ranges.






DBS Measuring Anchors
Sisgeo DBS Measuring Anchors

Product Features
 
  • Sisgeo DBS Measuring Anchors designed as an instrumented rockbolt; they are composed by four iron rods anchored every 1/4 of the grouted instrument length, a 38mm OD tube and a measuring head.
  • Replacement of typical working anchors with measuring anchors on a cross section will enable the computation of stress diagrams around the tunnel.
  • Readings are taken manually by a dial gauge or could be also automated by using vibrating wire displacement transducers.






Embedment Jointmeters
Sisgeo Embedment Jointmeters

Product Features
 
  • Sisgeo Embedment Jointmeters to detect the movements between two anchors.
  • It is suitable to be merged in concrete grouting, placing it across expansion joints, as usually occur in concrete dam.
  • A thermistor allows temperature measurement for temperature compensation, if needed.
  • It consists in two anchors, a vibrating wire displacement tranducer (DTE) and an external PVC casing.
  • Instrument’s measuring range is pre-set to measure the traction/compression of 50% full scale.
  • Any settings different from the standard can be requested to SISGEO in the purchase order.






Wire Deformometers
Sisgeo Wire Deformometers

Product Features
 
  • Sisgeo Wire Deformometers to monitor the changes in the distance between two anchor points.
  • Typical applications include measurements of small cracks, convergence monitoring in tunnel and structural deformations.
  • The USB wire deformometer consist of an aluminium logger and transducer box with a tensioned steel wire having 80mm stroke.
  • Electrical deformometer, available with both potentiometer or vibrating wire transducer, is composed by a stainless steel body mounted on fixing plate.
  • A kevlar rope realizes the connection between the transducer and the target.






Wire Crackmeters
Sisgeo Wire Crackmeters

Product Features
 
  • Sisgeo Wire Crackmeters to monitor the changes in the distance between two anchor points located up to 30 m apart.
  • Typical applications include measurements of large displacement associated with landslides, monitoring of rock-masses, mansonry cracks and surveying of earth faults.
  • The wire crackmeter consists of a stainless steel transducer box which includes the rotary electronic sensor with a wire tensioning device having 2 meter stroke.
  • Transducer box is supplied with a galvanised steel fixing plate.
  • The target is an eyebolt expansion anchor.






Deformometer And Mechanical Jointmeters
Sisgeo Deformometer And Mechanical Jointmeters

Product Features
 
  • Sisgeo Deformometer And Mechanical Jointmeters a large range of mechanical crackmeters (jointmeters) are produced to suit all the client requests.
  • The removable deformeter allows to measure relative movements between two reference pins positioned across the joint (fissure).
  • Supplied with carrying case it has a precise sliding rail with adjustable base length.
  • Uniaxial and 3-D (triaxial) mechanical jointmeters are available to monitor joints and cracks.
  • The movements between the two anchors are obtained with mechanical dial gauge.
  • Simple and cheap, the TT-1 tell-tale crack-monitor installed across a fissure allows the crack survey in two directions.






Crackmeters & Jointmeters
Sisgeo Crackmeters & Jointmeters

Product Features
 
  • Sisgeo Crackmeters & Jointmeters to monitor movement across surface cracks and joints in concrete structures or rock.
  • The instrument assembly includes sensor housing and target, both parts are equipped with screw anchors.
  • Typically the anchors are bolted on the opposite sides of the joint (crack).
  • The displacement transducer housed in the sensor body is positioned across the joint/crack enabling to measure the changes in the distance between the anchors.
  • CRID is an integrated automatic system for fissure monitoring of building and monuments reducing the visual impact.






Vibrating Wire And Spot-Weldable Strain Gauges
Sisgeo Vibrating Wire And Spot-Weldable Strain Gauges

Product Features
 
  • Sisgeo Vibrating Wire And Spot-Weldable Strain Gauges to monitor strain in steel or in reinforced concrete and massive concrete structures.
  • Arc-weldable VW strain-gauges are designed for arc welding to steel structure such as tunnel linings, piles and bridges.
  • Directly embedded in concrete for strain measurements of piles, foundations, dams, tunnel, etc.
  • Designed for easy installation on steel structures by means of capacitive spot welder.
  • Resistive strain-gauges are available for dynamic measurements in concrete or steel structure.






Thermometers And Temperature Strings
Sisgeo Thermometers And Temperature Strings

Product Features
 
  • Sisgeo Thermometers And Temperature Strings is a very important parameter to control for evaluating the influence of the thermal effects on the measurements and on the structure which is monitored.
  • Thermometers are available with platinum RTD (Resistance Thermal Detector) thermistor or vibrating wire probes.
  • All models are housed in a shock resistant stainless steel body to be embedded in concrete.
  • Temperature string probe is available for multiple thermal measurements in boreholes, treches or to be embedded into concrete.






OMNIAlog Datalogger
Sisgeo OMNIAlog Datalogger

Product Features
 
  • A versatile, cost effective and low powered datalogger supporting vibrating wire and all major geotechnical sensors.
  • Has a Web & FTP server on board, 8 analog channels, expandable to 392 channels and 2 digital opto-isolated input ports. 
  • Sisgeo OMNIAlog Datalogger can be managed by any Internet browser and also includes a 2GB USB pen drive support.
  • No software required
  • LAN Ethernet, USB and RS232 Comm ports
  • High performances (resolution, accuracy, environment -30°C +70°C)
  • Stand alone or part of network
  • Vibrating wire built-in interface
  • Digital sensors support
  • Compatible with all major geotechnical sensors