Xray sensors
X-ray sensors are used to determine the base weight of the coating material. They are usually configured as transmission sensors. Depending on the measuring range Protagon offers two types of X-ray sensors which differ in the high voltage:
| Type | High voltage | Measuring range | Resolution | Typ. precision |
| LEXRAY* | < 5 kV | 50 to 800 g/m2** | 0.05 g/m2 | 0.1 g/m2 or 0.2 % |
| HEXRAY* | > 5 kV | 300 to 5000 g/m2*** | 0.1 g/m2 | 1 g/m2 or 0.25 % |
| * LE = Low Energy; HE = High Energy | ** depends on material | *** higher measuring range on request |
Specifics of the LEXRAY sensor
- Operation of these x-ray devices does not require official approval
- Patented measuring technique
Benefits of the Xray-technology
- Focused measuring spot, thus high spatial resolution, particularly at the web edge
- high measuring accuracy
- X-ray radiation can be switched off, thus generally no restrictions apply to transport or export of these sensors
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