SK-SJM Vibrating Wire Surface Joint Meter / Crack Meter (Standard)
Short Description:
Overview
The Enviko SK-SJM vibrating wire surface joint meter, also known as a crack meter, is mounted on the surface of a structure for long-term monitoring of the opening and closing of surface cracks or joints in harsh environments. Universal joints at both ends accommodate a degree of shear displacement. A built-in temperature sensor records the temperature at the installation point.
Key Features
- Surface mounting on brackets fixed either side of the crack or joint
- Universal joints at both ends tolerate some shear displacement
- Seven ranges from 25 to 300 mm
- 0.025% FS resolution, ±0.1% FS accuracy
- Built-in temperature sensor
Applications
- Surface cracks and joints on dams, bridges, tunnels and buildings
- Expansion joints between structural blocks
- Cracks in rock faces and retaining walls
Specifications
| Parameter | Specification |
|---|---|
| Models | SK-SJM-25, SK-SJM-50, SK-SJM-100, SK-SJM-150, SK-SJM-200, SK-SJM-250, SK-SJM-300 |
| Standard range | 25, 50, 100, 150, 200, 250, 300 mm |
| Resolution | 0.025% FS |
| Non-linearity | ≤ 0.5% FS (linear); ≤ 0.1% FS (polynomial) |
| Accuracy | ±0.1% FS |
| Temperature range | −20 °C to +80 °C |
| Temperature sensitivity | ±0.1 °C |
| Water pressure resistance | 0.5 MPa |
| Insulation resistance | ≥ 50 MΩ |
Product Detail
Enviko has been specializing in Weigh-in-Motion Systems for over 10 years. Our WIM sensors and other products are widely recognized in the ITS industry.
