Crack Measuring Device
Here are the range of crack measuring device available at PCTE. These tools are used to measure crack width and change in crack width. Crack width can be measured through visual inspection within the specified range of the tool, while change in crack width can be monitored using a fixed gauge sensor to measure movement across surface cracks.
Besides, PCTE also offers Ultrasonic Pulse Velocity (UPV) equipment for crack depth measurement. For more information, please visit the Surfer and Pundit PL-200 page.
Digital Position Strain Gauge Deformation Meter
The Digital Position Strain Gauge Deformation Meter shown here consists of a digital dial gauge attached to a bar. A fixed conical point is mounted at one end of the bar, and a moving conical point is mounted on a knife edge pivot at the opposite end.
A setting out bar is used to position pre-drilled discs which are attached to the structure using a suitable adhesive. Each time a reading has to be taken, the conical points of the gauge are inserted into the holes in the discs and the reading on the dial gauge noted. In this way, strain changes in the structure are converted into a change in the reading on the dial gauge.
The gauge has been designed so that only minor temperature corrections are required for changes in ambient temperature, and a reference bar is provided for this purpose.
- Measuring range : Compression - 1.6 mm / Tension - 3.4 mm
- Minimum measuring unit: 0.001 mm
- Standard accessories: Digital crack gauge, Calibration Bar, Installation Bar, Locating Discs (box of 100)
Crack Magnifier
Crack widths are normally limited to 0.2 mm or 0.3 mm in concrete structures. This inexpensive crack measuring device enables accurate determination of whether cracks exceed this limit.
- Magnification 10x
- Measuring range 20 mm x 0.1 mm
- Field of View 32 mm
- Special design permitting to read on light and dark objects
- Plastic case
This loupe also comes in a self-illuminating model. Powered by two c-cell batteries this model can be used in those poorly lit areas where the natural light is dim or non-existent.
Crack Width Meter
The crack width meter is used as a comparator to give an approximate crack size during visual surveys.
- Made of durable plastic
- Graduations from 0.1 mm to 2.5 mm
Crack Monitor
On some structures the rotation at cracks is also significant. This gauge is specifically designed to measure rotation, transverse and longitudinal movement. The crack monitor is:
- Made of polycarbonate
- Used for measuring movements: horizontal ± 20 mm, ±10 mm.
- Reading accuracy of: ± 0.5 mm on grid.
Crack Meter
The Vibrating Wire Crack Meter are used to measure movement across surface cracks and joints in concrete, rock, soil and structures. They consist of a sensor outer body tube and an inner free sliding rod which is connected at the internal end to a vibrating wire sensor by a spring.
Field Microscpe
The field microscope is a small sized lightweight and conveniently portable microscope. Designed to cover the range between high grade heavily equipped microscopes and measuring magnifiers. With a magnification of 40 times this microscope can be used to accurately measure the width of cracks and also combines a calibrated focusing ring allow the depth of cracks to also be accurately measured.
- Magnification 40x
- Measuring Range 1.6 mm x 0.05 mm
- Field of View 1.7 mm
- Comes with light
