Introduction
LOADBOX Vibrating String Surface Strain Gauge is suitable for long-term deployment on the surface of concrete structures or structures of other materials to measure the strain on the structures and to measure the temperature at the deployment point simultaneously.
Specification
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Dimensional Parameters
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Measuring distance
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100mm
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Effective diameter
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22mm
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End diameter
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44mm
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Strain range
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Stretching
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1000με
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Compression
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1500με
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Temperature measurement range
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-25℃～+60℃
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Temperature measurement accuracy
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±0.5℃
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Temperature correction factor
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≈13.5 10-6／℃
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Modulus of elasticity
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300～500MPa
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Insulation resistance
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≥50MΩ
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Working principle
When the soil stress in the measured structure changes, the sensing plate of the earth pressure gauge will feel the change of stress synchronously, and the sensing plate will be deformed, and the deformation will be transferred to the vibrating wire to change the stress of the vibrating wire, thereby changing the vibration frequency of the vibrating wire . The electromagnetic coil excites the vibrating wire and measures its vibration frequency. The frequency signal is transmitted to the reading device through the cable, and the compressive stress value of the measured structure can be measured. At the same time, the temperature value of the buried point can be measured simultaneously.
Application
