Description
The Electric Crack Meter is used to measure the size change of the surface or connection part, as well as cracks in concrete structures.
A high-precision and linear potentiometer is mounted inside the housing. When deformation occurs, the rod pushes or pulls the sensor, which sends the movement to the potentiometer. The potentiometer converts the length change into an electrical signal, which is then transmitted to the output device.
This output signal can be easily converted into a length displacement value by applying a conversion coefficient. The difference between the initial (default) measurement value and the current measurement value represents the displacement. This allows the change speed, ratio, and trend of the crack to be easily measured.
Composition & Characteristics
▣ Components
- Crack meter sensor
- Cable
- Protection box
▣ Features
- High stability and reliability
- Excellent reproducibility and responsiveness with a built-in high-precision linear potentiometer
- Multiple measurement ranges available (10 mm ~ 300 mm)
- Built-in high-precision temperature sensor
Specification
| Model | SJ-4600 |
|---|---|
| Sensor applied | Sensor (Electric Type) |
| Measurement range | 0 ~ 50 mm |
| Resolution | Below 0.01 mm |
| Accuracy | Below 0.1% |
| Temp. expansion coefficient of resistance | ±400 ppm/°C |
| Rated power | 0.6 W ~ 4 W |
| Linearity | Below ±1% |
| Total resistance deviation | ±20% |
| Dimension | Sensor: L = 132 mm, D (Ø) = 25 mm Plate: L = 62 mm |
| Built-in temperature sensor | Included (built-in) |
| Weight | 0.22 kg |
| Material | Stainless Steel |