Hygrometer
The fiber Bragg grating hygrometer is designed with non-metallic technology, being passive, non-electrified, intrinsically safe, and free from electronic interference and lightning damage.
Application field
This sensor is widely used for long-term monitoring of humidity fields in buildings, warehouses, cable channels, power poles and towers, etc. It is equipped with a built-in temperature measurement grating and has the function of simultaneously measuring temperature and humidity.
Product features
Waterproof and moisture-proof, insensitive to electromagnetic interference, and reliable for a long time. It has excellent performance in harsh environments and is resistant to mechanical fatigue. Intrinsically safe, with strong resistance to corrosion, pollution and lightning strikes. The pigtail fiber adopts corrosion-resistant PU clad armored optical cable, which has excellent temperature resistance, corrosion resistance and aging resistance, and is suitable for long-term outdoor environments. The layout is simple and it can be used in combination with other types of fiber Bragg grating sensors.
Technical parameters
Project | Indicator |
Humidity range（%RH） | 5~95 |
Humidity accuracy | 1%F.S. |
Humidity resolution | 0.1% F.S. |
Number of gratings | 2 |
Central wavelength of the grating(nm) | 1528~1563 |
Reflectance | ≥80% |
Operating temperature range（℃） | -40~100 |
Size(mm) | Ф16*72 |
Pigtail fiber | High-temperature and corrosion-resistant Teflon optical fibers, 1.2m at each end, customizable |
Connection method | Welding |
Installation method | Mechanical fixation |