Mechanical 3D Crackmeter
Applications
The mechanical 3D crackmeter is used with a dial indicator to monitor movement at joints and cracks. 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.
Operation
Readings are obtained by inserting a the probe of a dial indicator through the access holes to contact opposite component. Take three sets of XYZ readings to ensure that you have a good baseline for comparison. Compare subsequent readings to the baseline. Changes indicate that movement has occurred.
Advantages
Easy Installation: Installation requires only two drill holes. Welding plates are also available.
Simple Operation: The crackmeter is read manually with a digital micrometer.
For more information
Please download the datasheet for the mechanical 3D crackmeter. This document can be viewed and printed with Adobe Acrobat Reader.
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 |
