Optional Probes and Specification Guide for Coating Thickness Gauge
| Probe model | F400 | F1 | F1/90º | F10 | N1 | CN02 | |||||||
| Operating principle | Magnetic induction | Eddy current | |||||||||||
| Measuring range (μm) | 0-400 | 0-1250 | 0-10000 | 0 to 1250 μm 0 to 40μm (for chrome plate on copper) |
10~200 | ||||||||
| Low range resolution (μm) | 0.1 | 0.1 | 10 | 0.1 | 1 | ||||||||
| Accuracy | One-point calibration (μm) | ±(3%H+1) | ±(3%H+10) | ±(3%H+1.5) | ±(3%H+1) | ||||||||
| Two-point calibration (μm) | ±[(1~3)H%+0.7] | ±[(1~3)H%+1] | ±[(1~3)%H+10] | ±[(1~3)%H+1.5] | – | ||||||||
| Measuring conditions | Min curvature of the min area (mm) |
Convex 1 | 1.5 | Flatten | 10 | 3 | Flatten | ||||||
| Diameter of the min area (mm) |
φ3 | φ7 | φ7 | φ40 | φ5 | φ7 | |||||||
| Critical thickness of substrate (mm) |
0.2 | 0.5 | 0.5 | 2 | 0.3 | unlimited | |||||||
Reference Table for Probe selection
| Coating
Substrate |
Non-magnetism coatings (Organic Materials) |
Non-magnetism coatings (non ferrous metals) | |||
| Thickness of coating is more than 100 μm | Thickness of coating is less than 100 μm | Thickness of coating is more than 100 μm | Thickness of coating is less than 100 μm | ||
| Steel, iron and other magnetism metal | Diameter of testing area is more than 30 mm | F1 Probe: 0-1250 μm
f-400 probe: 0-400 μm |
F1 Probe: 0-1250 μm
F10 probe: 0-10 μm |
F1 Probe: 0-1250 μm
f-400 probe: 0-400 μm |
F1 Probe: 0-1250 μm
F10 probe: 0-10 μm |
| Diameter of testing area is less than 30 mm | f-400 probe: 0-400 μm | F1 Probe: 0-1250 μm
f-400 probe: 0-400 μm |
f-400 probe: 0-400 μm | F1 Probe: 0-1250 μm
f-400 probe: 0-400 μm |
|
| Copper, Brass, Alumunium, Zinc, Tin and other metallic | Diameter of testing is more than 5 mm | N1 probe: 0-1250 μm | N1 probe: 0-40 μm (for chrome plate on chopper) | ||
| Plastic non metallic substrate | Diameter of testing is more than 70 mm | – | – | CN 02 Probe: 10-200 μm | |