SISGEO

Embedment Jointmeters

InfrastructureGeotechnical Instrumentation

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. More info.↗

Quantity

Specification

Measurement principle	vibrating wire displacement transducer with built-in thermistor
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