Strain Gage

Strain Gages are a vital geotechnical sensor that measures strain in underground cavities, tunnels, buildings, concrete, masonry dams, bridges, embedment in soil/concrete, etc. It is a resistance that varies with applied force, as it converts force, pressure, tension, weight, etc., into a change in measurable electrical resistance. Stress is determined as the object's internal resisting forces, and strain is defined as the displacement and deformation that occur.

Any basic strain gage sensor consists of an insulating flexible metallic foil backing. To measure the stress, the strain gage is attached to the object using an adhesive. The deformation in the object causes the foil to get distorted, changing its electrical resistivity.

Encardio Rite is the world’s leading manufacturer and supplier of reliable, high-quality, and low-cost Strain Gages.

1. Model EDS-11V Heavy-Duty Strain Gage:

It provides the remote digital readout of compressive and tensile strain in dams, bridges, underground cavities, tunnels, mines, steel structures, and other areas of application where strain measurement is required. It provides significant quantitative data on the magnitude and distribution of compressive and tensile strain and its variations with time.

2. Model EDS-12V Sister Bar Strain Gage:

It is designed for embedment and measurement of strain in concrete structures like piles, diaphragm/slurry walls, bridge abutments, tunnel lining, dams, foundations, etc. It contains a hollow bar with a vibrating wire strain gage which is coaxially mounted inside it.

3. Model EDS-20V-AW Arc Weldable Strain Gage:

It is made of stainless steel and has waterproofing to prevent water from entering. It is designed primarily for long-term strain measurement. It is suitable for surface mounting by welding on steel structures such as bridges, piles, wye sections, pressure shafts, tunnel linings, supports, etc.

4. Model EDS-20V-E Low-Range Embedment Strain Gage:

It is used to indirectly determine the stress and its variation with time, quantitatively. This type of strain gage is suitable for embedment in soil or concrete. The sensor is made of stainless steel and has waterproofing to prevent any ingress of water.

5. Model EDS-20V SW Spot Weldable Strain Gage:

It can be spot welded or epoxy bonded on steel structures and struts. It can also be epoxy bonded on concrete structures. A sensor coil housing mounted directly over the strain gage, completely encloses the sensor, forming a watertight enclosure.

6. Model EDS-21V SW High Range Arc Weldable Strain Gage:

It is designed to measure strain in steel or on the concrete surface of the composite structure. It is suitable for surface mounting by welding on steel structures such as bridges, piles, wye sections, pressure shafts, tunnel linings support, etc.

Applications of Strain Gages:

Measure and monitor strain in concrete, rock, and steel constructions
Study stress distribution in the supporting ribs of underground cavities and tunnels
Determine and measure stress in concrete and masonry dams
Test Wire sections
Monitor stress in pressure shafts
Measure strain in reinforced concrete structures, diaphragm slurry walls, concrete piles, etc.

Advantages of Encardio Rite’s Strain Gage

They are accurate, robust, and low-cost.
They provide long-term stability and reliability.
The vibrating Wire Strain Gage is hermetically sealed under a vacuum of 0.001 Torr, making it waterproof.
They are made of stainless steel, which makes them enduring and versatile.
The strain gages are ideal to be paired up with several other accessories
They are fully encapsulated to protect against handling and installation damages.