Sealed Weldable Strain Gages Vishay Micro-Measurements Special Purpose Strain Gages - Sealed Weldable Strain Gages Vishay Micro-Measurements Sealed Weldable Strain Gages are specially designed for spot welding to structures and components. They are ideally used for applications where test or environmental conditions preclude clamping and curing an adhesively bonded gage installation. These gages are equally advantageous when strain measurements must be made at elevated temperatures, but the nature of the test object does not permit the use of an elevated-temperaturecuring adhesive. Additionally, all Vishay MicroMeasurements Sealed Weldable Strain Gages come with a preinstalled protective coating providing both protection in moist environments and savings in the time and effort required for making the complete gage installation. All sensors are fabricated with EA-Series strain gages, laboratory-prebonded with a high-performance adhesive to a thin [0.005 in (0.127 mm)] stainless steel carrier, and fully encapsulated for protection against moisture. They have a 5000 microinch/in strain range, and a normal operating temperature range of +32F (0C) to +180F (+83C). These gages can be used on surfaces with a radius of curvature of 3.0 in (76 mm) or greater. The three leadwire-series of Vishay Micro-Measurements Sealed Weldable Strain Gages have physical constructions designed for various environmental exposures and installation constraints. R-LEADWIRE-SERIES These gages are designed for long-term out-of-doors use. Primarily used in applications such as railroad and civil structures, they can be exposed to oil and water splash and short-term submersion in water of shallow [24 in (60 cm)] depth. The metal carrier is processed to give good first cycle data, excellent fatigue resistance and a high strain range. DESIGNATION LEA-06-W125E-350/3R Exposure of the vinyl-insulated cable to strong solvents especially MEK - should be avoided to prevent damage. Long-term exposure to sub-freezing temperatures requires careful handling to avoid cracking of the vinyl insulation. NOMINAL RESISTANCE (Ohms) NOMINAL GAGE FACTOR GRID GEOMETRY GAGE LENGTH (in) LEADWIRE SHIM LENGTH (in) SHIM WIDTH (in) 350 2.0 Axial 0.125 Vinyl 0.8 0.4 1.0 0.5 0.30" Black White Red 0.20" EA-06-125BZ-350 Configuration Bridge Circuit LEA-06-W125F-350/3R 350 2.0 Shear 0.125 Black Vinyl 0.35" EA-06-125TK-350 White 0.25" Red Bridge Circuit Document Number: 11533 Revision 21-May-03 micro-measurements@vishay.com Configuration www.vishaymg.com 1 Sealed Weldable Strain Gages Vishay Micro-Measurements Special Purpose Strain Gages - Sealed Weldable Strain Gages T-LEADWIRE-SERIES This series is designed to withstand exposure to water pressures of up to 500 psi. They can also withstand shortterm (up to 14 days) immersion in crude oil. A flexible stainless steel tube, providing wire routing from the strain gage to a cable transition, enables fine positioning of the DESIGNATION LEA-06-W125E-350/10T sensor as well as providing strain relief. These sensors are typically used on larger civil structures, including bridges, dams, and buildings, or for exposures of up to a year in seawater. NOMINAL RESISTANCE (Ohms) NOMINAL GAGE FACTOR GRID GEOMETRY GAGE LENGTH (in) LEADWIRE SHIM LENGTH (in) SHIM WIDTH (in) 350 2.0 Axial 0.125 Shielded Vinyl 0.8 0.4 Black 0.30" WELDABLE ANCHOR SHIM S.S. TUBE 1.5" TRANSISTION White 0.20" Red EA-06-125BZ-350 Bridge Circuit LEA-06-W125F-350/10T 350 2.0 Configuration Axial 0.125 Shielded Vinyl Black 1.0 0.5 EA-06-125TK-350 0.35" 0.25" White Red Configuration Bridge Circuit L-LEADWIRE-SERIES The L-Leadwire-Series sensors are designed to have a performance similar to the T-Leadwire-Series but without a cable transition. They can be used in similar applications when the sensor will be exposed to smaller strains, and care DESIGNATION LEA-06-W125E-350/10L can be taken during installation to anchor the leadwire to provide for strain relief. The L-Leadwire-Series gages are particularly useful where space constraints preclude the use of the cable transition of T-Leadwire-Series gages. NOMINAL RESISTANCE (Ohms) NOMINAL GAGE FACTOR GRID GEOMETRY GAGE LENGTH (in) LEADWIRE SHIM LENGTH (in) SHIM WIDTH (in) 350 2.0 Axial 0.125 Shielded Vinyl 1.5 0.6 1.5 0.6 Black 0.35" 0.30" White Red EA-06-125BZ-350 Bridge Circuit LEA-06-W125F-350/10L 350 2.0 Configuration Shear 0.125 Shielded Vinyl Black 0.35" White 0.30" Red Bridge Circuit www.vishaymg.com 2 micro-measurements@vishay.com Configuration Document Number: 11533 Revision 21-May-03