I. Use
1. Determine steel bars position in concrete structure and their bar drawing;
2. Estimate steel bars diameter and thickness of protection layer;
3. Measure thickness of protection layer under condition of known diameter;
4. Measure thickness of protection layer under a certain surface, with grid indication;
5. Measure thickness of protection layer under a certain line, indicating steel bars at section;
6. The probe is with self-correcting function;
7. Data saving and reading;
8. Data transfer.
9. Deep Scanning Metal Locator Rebar Detector.
1. Steel bar diameter shall in the range of 6mm-50mm, and thickness of protection layer :
Table1.1 thickness range mm
MM
Steel bar diameter | First nominal range | Second nominal range | ||
Lower limit | Upper limit | Lower limit | Upper limit | |
6 | 6 | 70 | 7 | 90 |
8 | 7 | 70 | 10 | 100 |
10 | 7 | 80 | 11 | 126 |
12 | 7 | 80 | 14 | 126 |
14 | 8 | 80 | 15 | 126 |
16 | 8 | 80 | 16 | 126 |
18 | 8 | 80 | 16 | 126 |
20 | 8 | 86 | 18 | 160 |
22 | 9 | 86 | 18 | 160 |
25 | 9 | 86 | 19 | 160 |
28 | 9 | 86 | 21 | 160 |
32 | 9 | 90 | 21 | 180 |
2. Max allowed indication error for thickness of protection layer
Table 1.2 Max allowed indication error mm
Max allowed error | Nominal range for protection layer thickness | |
First nominal range | Second nominal range | |
±1 | 6 ~ 59 | 7 ~ 79 |
±2 | 60 ~ 69 | 80 ~ 119 |
±4 | 70 ~ 90 | 120 ~ 180 |
3. Nominal diameter rannge: 6mm-32mm
4. Max. allowed error for steel bar diameter: error±1
Table 1.3 Indication error for steel bar diameter mm
diameter | 6 | 8 | 10 | 12 | 14 | 16 | 18 | 20 | 22 | 25 | 28 | 32 |
Max. error |
+
2
0 |
±2 | ±2 | ±2 | ±2 | ±2 | ±2 | ±2 |
+
3
- 2 |
±3 |
+
4
- 3 |
0
- 4 |