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Weldable gauges (LS31HT)

The LS31HT strain gauge is best suited for applications with elevated temperatures on weldable components, such as mechanical load analysis on buildings and infrastructure.

Code Type/technology Application Geometry Measuring grid length [mm] Measuring grid length [in] Carrier length [mm] Carrier length [in] Carrier width [mm] Carrier width [in] Temperature range Nominal resistance Gauge factor (measuring grid material) Temperature response Maximum elongation Fatigue life Connection configuration Mounting Grid protection Measuring grid width [in] Measuring grid width [mm]
1-LS31HT-6/350VE Foil strain gauge Stress Analysis / structural testing Linear 6 mm 0.236 in 40 mm 1.575 in 10 mm 0.394 in High (up to 350°C) 350 Ohms Cr-Ni alloy (ca. 2.2) Molybdenum (5.4 ppm/K; 3.0 ppm/°F) Standard Standard Fluoropolymer-insulated connection wires Bondable Covered - -

LS31HT: Weldable Strain Gauge for Rough Environments and High Temperatures

The LS31HT is a weldable strain gauge to be spot welded to steel structures and materials. It is ideal to be used "on site", when the cleanliness required for gluing cannot be guaranteed, for example on construction sites or in production plants, withstanding hazardous conditions. Such conditions would likely damage the adhesive bond of conventional strain gauges. The LS31 strain gauge is mounted by a simple spot welding process that requires little practice. It is fitted with 0.5-m stranded connection wires. 

Typical applications for LS31HT include the mechanical load analysis on bridges, piles, tunnels, buildings, pipelines, wind power plants, and tanks. 

Robust

  • Comes on a carrier plate covered with red silicone rubber to be spot welded

Withstands harsher operating conditions

Simple to install

  • Easily mounted by simple spot welding method that requires hardly any preparation

Long service life with a permanent attachment to the structure

Reliable

  • Withstands elevated temperatures from -50°C up to +250°C (short time 300°C). 
  • 4-wire configuration

Accurate results under harsh conditions or environments