Rugged vibrating wire meter specifically designed for embedding in mass concrete to monitor construction joints.
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Rugged vibrating wire meter specifically designed for embedding in mass concrete to monitor construction joints.
The Geolook Vibrating Wire Joint Meter is a robust instrument engineered to monitor the opening and closing of construction joints in mass concrete structures. Unlike surface-mounted crack meters, this sensor is designed to be embedded directly within the concrete block, making it integral to the structure itself. It is particularly suited for monitoring the interface between concrete lifts in arch dams, abutments, and other massive civil engineering works. The sensor body is constructed from high-strength stainless steel to withstand the pressures of concrete placement and curing while providing stable, long-term data on joint behavior.
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A Vibrating Wire (VW) Joint Meter is a specialized displacement sensor designed to measure the relative movement between two adjacent concrete blocks. Unlike a crack meter which bridges an existing surface fissure, a joint meter is typically installed across a planned construction joint before or during the concrete pouring process.
Its primary function is to monitor the 'opening' (expansion) or 'closing' (contraction) of the joint. This data is critical for verifying that the structure is behaving as designed, particularly during the initial curing phase and subsequent thermal cycles.
The VW Joint Meter consists of two main parts: a socket (anchored in the first concrete block) and the sensor body (anchored in the second, adjacent block). As the joint opens or closes, a sliding shaft within the sensor moves, changing the tension of an internal steel wire.
An electromagnetic coil plucks this wire, causing it to vibrate at a frequency proportional to the tension. This frequency is measured by a readout unit and converted into millimeters of displacement. The design typically includes a bellows or protective housing to allow the sensor to accommodate some shearing motion (movement perpendicular to the sensor axis) without being damaged.
Installation typically involves grouting the socket component into the first concrete lift. Once that concrete has set, the sensor body is screwed into the socket before the second lift is poured. This ensures a rigid connection across the joint.
Constructed from corrosion-resistant stainless steel and rated to withstand high hydrostatic pressures (up to 2 MPa), the Geolook G71-V260 is built to survive the aggressive chemical and physical environment of curing concrete.
In the harsh environment of mass concrete—where sensors are permanently buried and inaccessible—reliability is paramount. Vibrating wire technology offers significant advantages over resistive or voltage-based sensors:
A Vibrating Wire (VW) Joint Meter is a specialized displacement sensor designed to measure the relative movement between two adjacent concrete blocks. Unlike a crack meter which bridges an existing surface fissure, a joint meter is typically installed across a planned construction joint before or during the concrete pouring process.
Its primary function is to monitor the 'opening' (expansion) or 'closing' (contraction) of the joint. This data is critical for verifying that the structure is behaving as designed, particularly during the initial curing phase and subsequent thermal cycles.
In the harsh environment of mass concrete—where sensors are permanently buried and inaccessible—reliability is paramount. Vibrating wire technology offers significant advantages over resistive or voltage-based sensors:
The VW Joint Meter consists of two main parts: a socket (anchored in the first concrete block) and the sensor body (anchored in the second, adjacent block). As the joint opens or closes, a sliding shaft within the sensor moves, changing the tension of an internal steel wire.
An electromagnetic coil plucks this wire, causing it to vibrate at a frequency proportional to the tension. This frequency is measured by a readout unit and converted into millimeters of displacement. The design typically includes a bellows or protective housing to allow the sensor to accommodate some shearing motion (movement perpendicular to the sensor axis) without being damaged.
Installation typically involves grouting the socket component into the first concrete lift. Once that concrete has set, the sensor body is screwed into the socket before the second lift is poured. This ensures a rigid connection across the joint.
Constructed from corrosion-resistant stainless steel and rated to withstand high hydrostatic pressures (up to 2 MPa), the Geolook G71-V260 is built to survive the aggressive chemical and physical environment of curing concrete.
We are currently updating the specific model configurations and technical datasheets for this product category.