Embedment Jointmeters
The embedment jointmeters are used to monitor opening and closing of joints in concrete dams and other mass-concrete structures. The jointmeter is installed in separate pours of adjacent blocks of the structure. A removable anchor is embedded in the first block. Then the jointmeter body is screwed into the anchor and embedded in the adjacent block. Later, when movement occurs at the joint, the plastic body breaks, allowing the transducer inside to make measurements.
Measurement principle | vibrating wire displacement transducer with built-in thermistor |
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Range | 25, 50, 100, 150mm |
Accuracy Pol. MPE | < ±0.50% FS (25mm) < ±0.30% FS (50mm) < ±0.30% FS (100mm) < ±0.30% FS (150mm) |
Accommodate shear | ±15 mm (±0.6") shear movement at the joint |
Output signal | frequency (VW), resistance (thermistor) |
Sensitivity | 2250 - 3000 Hz |
Typical frequency range | -20°C +80°C |
Material | galvanized steel / PVC |
Protection | IP68 up to 1.0 MPa |