Handheld Thickness Gauge
Hitachi - CMI255 & CMI257
Utilises dual technology to measure coating thickness on non-ferrous and ferrous metal substrates; non-magnetic coatings on magnetic substrates
Technical Description
The CMI255 and CMI257 coating thickness gauges use dual technology along with highly reliable testing for protective and decorative coatings applied to steel, iron, aluminum, and other metals. With the ability to store data on the device for reviewing a range of measurement samples and the capability to calculate variations in substrate materials, the CMI255 and CMI257 are superior tools for testing and quality assurance in:
- Paint & powder coating
- Electrical equipment
- Electroplating
- Coating inspection
- Automotive and aerospace
These handheld devices are factory-calibrated and automatically select the best measurement technique for the base material. The gauges are designed to be durable, featuring rubber covers and meeting IP52 environmental protection standards for use in harsh conditions. The CMI255 has an integrated probe for one-handed operation. The CMI257 comes with a separate probe connected by a cable, allowing measurements to be taken in hard-to-reach areas.
Specifications
CMI250 Series dual technology:
- Magnetic induction technology for non-magnetic coatings (paint, powder coat, zinc, cadmium) over ferrous and magnetic steel.
- Measurements taken conform to the following specifcations: ASTM D7091; B499; B530; DIN EN ISO 2178.
- Eddy current technology for non-conductive coatings (paint, powder coat, epoxy, lacquer) over non-ferrous metals like aluminium, magnesium or copper.
- Measurements taken conform to the following specifcations: ASTM B244; B529; DIN EN ISO 2360.
| Model | CMI 255 | CMI 257 |
| Thickness Range | Ferrous: 0-3500µm (0-140mil) | |
| Non-Ferrous: 0-3000µm (0-120mil) | ||
| Accuracy | ±2% or ±0.08 mil (2 µm) | |
| Resolution | 0.1 mil @ 0-100 mil | |
| 0.2 mil @ 100-140 mil | ||
| 1 µm @ 0-1,000 µm | ||
| 2 µm @ 1,000-2,500 µm | ||
| 5 µm @ 2,500-3,500 µm | ||
| Dimensions | 4.3" x 2" x 1" / 110 x 50 x 25 mm | |
| Weight | 3.2 oz. / 90 g | 5.0 oz. / 140 g |
| Batteries | 2 x AAA | |
| Protection | IP52 (dust and dripping water) | |
| Minimum Sample Dimensions | ||
| Convex radius | 0.2" / 5 mm | |
| Concave radius | 2" / 50 mm | |
| Clearance | 5" / 125 mm | 2" / 50mm |
| Measurement Area | 0.4" x 0.4" / 10 x 10 mm | |
| Probe | Integrated | Tethered |
| Base re-zero | Yes | Yes |
| Memory | Yes | Yes |
