The measuring process is non-destructive and TP D-StB 12 approved (Technical testing regulations applicable for calculating surface thickness in road construction) to gauge individual and total thickness of layers in road construction.
Use of the device in road constructions typically involves placing aluminum foil at the base of an asphalt layer yet to be applied. The foil gets packed in by the gravel mix and thus does not hamper the process of inter-layer bonding. Decades of experience have shown that the foils do not affect the stability of the asphalt layers.
Unlike the core drill method, this does not damage the construction layer.
The measuring reflectors can be located by a bar graph display on the measuring device or acoustically by the headphones included in the delivery.
There are three kinds of probes available for special applications in the construction sector:
- N 100ST: Up to 100 mm to measure the covering layer in road construction
- N 400ST: Measuring range between 0 and 400 mm to measure the base and covering layers in road construction
- N 800ST: Up to 800mm
- Non-destructive measurement
- TP D-StB 12 approved
- Measuring range up to 400 mm
- Direct display of thickness
- Unlimited measurements repeatedly at the same spot
- Easy location of the measuring reflectors
| Measuring Principle | Eddy Current testing |
| Measurable layers | all non-metallic road layer materials |
| Reflectors | aluminium foils or sheets of different sizes |
| Measuring Range | 0 - 40 cm N400ST Standard Probe 0 - 10 cm N100ST Optional Probe 0 - 80 cm N800ST Optional Probe |
| Resolution | 0.1 cm @ 0 - 30 cm 0.2 cm @ 30 - 35 cm 0.4 cm @ 35 cm+ |
| Tolerance of standard probe | ± (0.1 cm +2 % of reading) @ 0 - 30 cm ± 2 % of reading @ 30 - 35 cm ± 2 % of reading @ 35 - 40 cm |
| Display | LCD Panel |
| Data Memory | DIRECT mode: approx. 500 single readings and statistical values SITE mode: approx. 6,000 single readings incl. statistics 5 site memories available with 300 stations each 4 measuring spots per station 5 layer material types per measuring spot |
| Power supply | 1 x 9 V alkaline battery |
| Battery | ~ 20 hours |
| Ambient temperature | gauge: 0 °C - 50 °C probe: 0 °C - 70 °C |
Thank You
Thank you for your quote request, we will contact you within 1-2 business days.
