Mechanical 3D Crackmeter
Readings are obtained by inserting the probe of a dial indicator through the access holes to contact the opposite component. Take three sets of XYZ readings to ensure a good baseline for comparison. Compare subsequent readings to the baseline. Changes indicate that movement has occurred.
The Mechanical 3D Crackmeter is easy to install, requiring only two drill holes. (Welding plates are also available) and is simple to operate as the unit is read manually with a digital micrometer.
Typical applications include:
- Monitoring construction joints to evaluate structural performance.
- Monitoring cracks in structures near active construction sites.
- Monitoring movement of rock masses in natural rock formations.
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Mechanical 3D Crackmeter Specifications
| MECHANICAL 3D CRACKMETER | |
|---|---|
| Aluminum 3D Crackmeter | 51708800 |
| Stainless 3D Crackmeter | 91708800 |
| The mechanical 3D crackmeter consists of a long arm component and a reference component with integral anchors, an alignment block, screws, and a wrench. Dial indicator is not included. | |
| Range X, Y, Z | 0 to 12.5 mm (0 to 0.5 in) |
| Materials | Aluminum or stainless steel body, stainless steel anchors |
| Length, Width, Height | 190x 50 x 45 mm, (7.5 x 2 x 1.75 in), excluding anchors |
| Anchors | 12.5x 76 mm (0.5 x 3 in) |
| Anchor Spacing | 140 mm ( 5.5 in), center to center |
| Suggested Drill Holes | 25 mm x 76 mm ( 1 x 3 in ) to accommodate anchor and grout. At least 50 mm (2 in) of anchor should be embedded in grout |
| Suggested Grout | Epoxy, non-shrinking |
| DIGITAL DIAL INDICATOR | |
|---|---|
| Dial Indicator with Collar | 51708868K |
| Alignment Collar Only | 51708867 |
| Digital dial indicator provides range of 50mm (2 in) and resolution of 0.01mm (0.001 in). The alignment collar is included | |
| Alignment collar greatly improves measurement precision. Collar is included indicator above, but available separately for user-supplied indicators. Fits 9.5mm (0.375 in) stem and accomodates shaft diameters to 4.8 mm (0.190 inch) | |
| ACCESSORIES | ||
|---|---|---|
| Weldable Anchor Kit | 51708855 | Weldable anchor kit includes two weldable plates for mounting the crackmeter on steel structures |
