VWD-J Smart Vibrating Wire Joint Meter for Expansion Joint and Peripheral Joint Monitoring
VWD-J Smart Vibrating Wire Joint Meter is designed for long-term installation inside or on the surface of concrete structures and other material structures. It measures the opening and closing displacement of expansion joints or peripheral joints, while synchronously measuring the temperature at the embedded point. The joint meter uses a VWD vibrating wire displacement meter as the sensing core and is assembled with supporting installation accessories. The instrument adopts a full stainless steel integrated structure with anti-rotation, anti-bending, impact-resistant and drop-resistant design. It provides grounding lightning protection and is suitable for long-term underwater operation.
System Category
DL-SE
Signal Type
位移
Communication
Project-configured interface
Application Fit
Typical applications for this product
Industrial Equipment Monitoring
Monitor rotating machinery and industrial equipment condition including vibration, torque, shaft power, rotational speed, shaft torsional vibration, and operational condition trends.
Typical configuration reference
Cultural Heritage Monitoring System
Monitor crack evolution, structural vibration response, tilt, displacement, long-term deformation, rock-mass fissure evolution, weathering-related structural degradation, stability trends, and environmental or human-activity impact for protected heritage assets.
Typical configuration reference
Civil Infrastructure Structural Monitoring
Monitor civil infrastructure deformation, strain, vibration, displacement, tilt, cracks, settlement, GNSS movement, cable force, seismic response, and construction-stage structural behavior.
Typical configuration reference
Research & Engineering Testing
Capture modal response, vibration response, dynamic strain, torque, speed, temperature, pressure, force, displacement, and synchronized multi-channel data for engineering verification.
Typical configuration reference
Product Media
Product views and demonstration
Product Image and Application Context
Visual reference for VWD-J Smart Vibrating Wire Joint Meter for Expansion Joint and Peripheral Joint Monitoring
Product images are used when available for RFQ evaluation and product recognition.
Primary Product Image
Product image configured for this product.
Application Context
Product image configured for this product.
Concrete structure expansion joint monitoring
Typical embedded or surface installation deployment for project configuration.
Peripheral joint opening monitoring
Typical embedded or surface installation deployment for project configuration.
Crack displacement monitoring
Typical embedded or surface installation deployment for project configuration.
Technical Specifications
Category
DL-SE
Measurement Range
0-20 mm / 0-50 mm / 0-100 mm
Sampling Rate
0.025%F.S. / 0.025%F.S. / 0.025%F.S.
Communication Protocol
Project-configured interface
Protection Level
Application-specific enclosure
Power Supply
Project-configured power supply
Application Tags
Concrete structure expansion joint monitoring, Peripheral joint opening monitoring, Crack displacement monitoring, Dam and hydraulic structure joint monitoring, Tunnel and culvert joint monitoring, Bridge and civil structure deformation monitoring
Installation Type
Embedded or Surface Installation
Model NO.
VWD-J
Product Name
Smart Vibrating Wire Joint Meter
Type
Joint Meter / Crack Meter / Displacement Sensor
Measurement Principle
Vibrating Wire
Sensor Core
VWD Vibrating Wire Displacement Meter
Application
Expansion Joint, Peripheral Joint, Crack and Structural Deformation Monitoring
Installation
Embedded or Surface Installation
Measurement Ranges
0-20 mm, 0-50 mm, 0-100 mm
Sensitivity
<=0.008 mm / <=0.02 mm / <=0.04 mm depending on range
Resolution
0.025%F.S.
Accuracy
Fitting accuracy 0.1%F.S.; end base accuracy 0.5%F.S.
Temperature Range
-40°C to +80°C
Temperature Sensitivity
±0.1°C
Temperature Accuracy
±0.5°C
Smart Recognition
>=1600 m information recognition
Smart Diagnosis
>=1600 m fault diagnosis
Over-Range
25% normal operation
Material
Stainless Steel
Water Pressure Resistance
>=1MPa
Insulation Resistance
>=50MΩ
Structure
Protective Pipe Seat, Protective Sleeve, Displacement Meter, Rear Connecting Ring, Observation Cable
Compatible Automatic System
MCU Distributed Measurement Unit, GDA Full-Function Datalogger
Origin
China
Instrument Diameter
30.5 mm / 24 mm / 24 mm
Instrument Length
337 mm / 373 mm / 325 mm
Measuring Range
0-20 mm / 0-50 mm / 0-100 mm
Sensitivity
<=0.008 mm / <=0.02 mm / <=0.04 mm
Resolution
0.025%F.S. / 0.025%F.S. / 0.025%F.S.
Fitting / End Base Accuracy
0.1%F.S. / 0.5%F.S. / 0.1%F.S. / 0.5%F.S. / 0.1%F.S. / 0.5%F.S.
Temperature Range
-40°C to +80°C / -40°C to +80°C / -40°C to +80°C
Temperature Sensitivity
±0.1°C / ±0.1°C / ±0.1°C
Temperature Accuracy
±0.5°C / ±0.5°C / ±0.5°C
Smart Recognition
>=1600 m information recognition / >=1600 m information recognition / >=1600 m information recognition
Smart Diagnosis
>=1600 m fault diagnosis / >=1600 m fault diagnosis / >=1600 m fault diagnosis
Over-Range
25% normal operation / 25% normal operation / 25% normal operation
Material
Stainless Steel / Stainless Steel / Stainless Steel
Water Pressure Resistance
>=1MPa / >=1MPa / >=1MPa
Insulation Resistance
>=50MΩ / >=50MΩ / >=50MΩ
Equipment
Suggested Description
Calibration Equipment
Displacement Sensor Calibration Frame
Calibration Instrument
Precision Grating Ruler
Observation Cable
YSPT-4P hydraulic engineering cable
Engineering Applications
Where this DL product is applied
Designed for long-term monitoring of expansion joints and peripheral joints
Suitable for concrete structures and other material structures
Supports embedded and surface installation
Measures joint opening displacement and deformation
Synchronous temperature measurement at embedded point
Uses VWD vibrating wire displacement meter as the sensing core
Full stainless steel integrated structure
Anti-rotation, anti-bending, impact-resistant and drop-resistant design
Typical Use Cases
Typical monitoring use cases
Concrete structure expansion joint monitoring
Peripheral joint opening monitoring
Crack displacement monitoring
Dam and hydraulic structure joint monitoring
Tunnel and culvert joint monitoring
Bridge and civil structure deformation monitoring
Embedded joint displacement monitoring
Surface joint displacement monitoring
System Integration Context
Sensor, DAQ, and software context
Confirm measurement range, cable length, mounting accessories, environmental conditions, and output interface before quotation.
Match the sensor or acquisition unit with the project data logger, communication gateway, power design, and monitoring platform.
Final configuration and calibration requirements are confirmed against the monitoring point schedule.